CN1693521A - Quasi bainitic steel and its application in rail way industry - Google Patents
Quasi bainitic steel and its application in rail way industry Download PDFInfo
- Publication number
- CN1693521A CN1693521A CNA2005100175242A CN200510017524A CN1693521A CN 1693521 A CN1693521 A CN 1693521A CN A2005100175242 A CNA2005100175242 A CN A2005100175242A CN 200510017524 A CN200510017524 A CN 200510017524A CN 1693521 A CN1693521 A CN 1693521A
- Authority
- CN
- China
- Prior art keywords
- quasi
- surplus
- iron
- bainite steel
- manganese
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Heat Treatment Of Steel (AREA)
Abstract
A quasi-bainite steel with high strength, toughness, weldability and antiwear performance for railway contains C (0.09-1.20 wt.%), Mn (0.80-3.20), Mo (0.2-0.8), Si (0.90-2.50), and Fe (rest). Its preparing process includes such steps as smelting in electric furnace or converter, refining while controlling the contents of N2, H2 and O2, casting, quenching, and annealing.
Description
One. technical field: the present invention relates to a kind of railway steel, particularly relate to a kind of high-strength, high-ductility, can weld, attrition resistant quasi-bainite steel and the application in railway systems thereof.
Two. background technology: the railway transportation of our times various countries develops towards the direction of high speed, heavy duty, big volume of freight, the speed raising of several times has been experienced in particularly current domestic transportation by railroad, the Aorta of this national economy, for the development that promotes industrial and agricultural production, be significant, thereby it is more and more higher to the material requirements of the every aspect used, at high-strength, high-ductility, can weld, aspect such as wear-resisting, also propose more and more higher requirement, originally the material used of railway can not satisfy actual service requirements far away.China proposed in 2000: be the construction of the high-speed railway that cooperates 200Km/h and 300Km/h, the development that solve the high speed rail; The development of high-speed railway train wheel, rim; High-speed overload railway road pillow, culvert etc. are with the development on the high strength cast iron; And the easy welding that complements one another with high precision, wear-resisting heavy rail, easily the development etc. of the wear-resisting track switch steel of processing all puts on the agenda.For iron and steel, find that Bei Shi steel body tissue experiences the broad research of over half a century later on the thirties from the last century, in application facet, since successfully developing typical bainitic steel the fifties, though get along with, but because of impelling strength is not high, big fragility is arranged on the fracture, make people produce doubt its use.
There is 50,000 kilometers railway to be short path road at present in more than 70,000 kilometer the railway business circuit approximately in the whole nation, every kilometer circuit has 40 pairs of rail joints, even in seamless track section, in the track switch front and back, long rail buffer zone, do not have quarrel bridge circuit etc. and locate to still have rail joint.When train passes through these joints, will produce the surging force of powerful complexity in the joint, make rail joint produce viscous deformation, cause the rail joint place to produce button mouth, the low defectives such as circuit frost boiling, prosperous mud of collapsing, because the existence of these defectives has strengthened impact and the destruction of wheel to rail joint again, thereby form the vicious cycle of circuit rail joint infringement, cause circuit uneven more, make train driving not steady more, under this environment, select new high-strength, high-ductility for use, can weld, attrition resistant railway track material is imperative.At this situation, people constantly develop the steel grade that makes new advances, disclose a kind of " niobium-containing high strength fishing steel " as Chinese patent (publication number is CN1014080B, and application number is 88101251), its chemical ingredients (%) is: C 0.50～0.57, Si 0.20～0.40, Mn 0.50～0.80, P≤0.040, S≤0.045, Nb 0.015～0.050, and all the other are iron.This invention changes the mechanical property of steel by niobium is joined in the molten steel, and its alloy content is low, and production technique is simple, and mechanical performance of products reaches world-class levels, but its carbon content height is not suitable for low temp area and uses; And for example: (publication number is CN1375573A to Chinese patent, application number is 01138962.1) a kind of " YW35 steel and application thereof " disclosed, its chemical ingredients is: C 0.32～0.40, and Si 0.30～0.50, Mn1.1～1.3, P≤0.035, S≤0.035, Cu≤0.2, Nb 0.04～0.07, V 0.06～0.2, and Mo 0.15～0.25.It is based on high mangaenese steel, under the situation that reduces carbon content, adds an amount of molybdenum, vanadium, niobium, in order to improving the low-temperature performance of steel, but this invention complete processing complexity, cost is higher; Chinese patent (application number is 86103008), a kind of " middle carbon air-cooled Mn/B bainitic steel " disclosed, Chinese patent (application number is 86103009), a kind of " medium high carbon air-cooled Mn/B bainitic steel " disclosed, these two patents of invention all are to adopt manganese, boron as alloying element, but because of their hardness height, its tensile strength, plasticity and toughness are relative relatively poor, and its work-ing life is not as good as railway track; (publication number is CN1172171B to Chinese patent, application number is 95113726.3) a kind of " quasi-bainite steel " disclosed, it is characterized in that: its composition is made up of main addition element and at least a additional alloying element, the weight percent of described main addition element consists of: carbon C 0.04～1.3, manganese Mn 1.0～3.5, hinder carbide and separate out element 0.8～2.8, the weight percent of described additional alloying element consists of: molybdenum Mo 0～0.6, boron 0～0.005, chromium Cr 0～2.0, silicon Si 0～2.8, aluminium Al 0～2.8 element such as grade, point out again that in the technical characterictic of its dependent claims it is silicon or aluminium that described obstruction carbide is separated out element, the main addition element of this invention and additional alloying element are formed all silicon or aluminium, and content range confusion, allow the people not know that described silicon or aluminium are main addition element or additional alloying element, since with " or " expression, but the dependent claims of back all comprises silicon and aluminium again simultaneously, and disclosed these technical characterictics of this invention allow those skilled in the art can't implement its technical scheme.And, since its essential features is " at least a additional alloying element is formed ", but the weight percent of described additional alloying element is formed all from " 0 ", if all get minimum value " 0 ", that just means can not add alloying element, cause inconsistently, this also is one of the reason that can't implement of this technical scheme.
Three. the content of invention:
Purpose of the present invention: by the change of alloy species and content, overcome the defective of prior art, a kind of complete processing is simple, the quasi-bainite steel of the high-strength and high ductility weldable wearproof of good combination property thereby provide, with and application in railway systems.
Technical scheme of the present invention: a kind of quasi-bainite steel is a unit with the weight percent, contains carbon C 0.09～1.20, manganese Mn 0.80～3.20, and silicon Si 0.90～2.50, molybdenum Mo 0.20～0.80, surplus is iron Fe.
Described quasi-bainite steel also contains chromium Cr 0.25～2.80, and surplus is iron Fe.
Described quasi-bainite steel also contains nickel 0.50～1.50, and surplus is iron Fe.
A kind of quasi-bainite steel is a unit with the weight percent, contains carbon C 0.10～0.25, manganese Mn 0.80～3.20, and silicon Si 0.90～2.50, molybdenum Mo 0.20～0.80, surplus is iron Fe.
Described quasi-bainite steel also contains chromium Cr 0.25～2.80, and surplus is iron Fe.
Described quasi-bainite steel also contains nickel 0.50～1.50, and surplus is iron Fe.
A kind of quasi-bainite steel is a unit with the weight percent, contains carbon C 0.20～0.35, manganese Mn 0.80～3.20, and silicon Si 0.90～2.50, molybdenum Mo 0.20～0.80, surplus is iron Fe.
Described quasi-bainite steel also contains chromium Cr 0.25～2.80, and surplus is iron Fe.
Described quasi-bainite steel also contains nickel 0.50～1.50, and surplus is iron Fe.
A kind of quasi-bainite steel is a unit with the weight percent, contains carbon C 0.30～0.70, manganese Mn 0.80～3.20, and silicon Si 0.90～2.50, molybdenum Mo 0.20～0.80, surplus is iron Fe.
Described quasi-bainite steel also contains chromium Cr 0.25～2.80, and surplus is iron Fe.
Described quasi-bainite steel also contains nickel 0.50～1.50, and surplus is iron Fe.
A kind of quasi-bainite steel is a unit with the weight percent, contains carbon C 0.09～1.20, manganese Mn 0.80～3.20, and aluminium Al 0.80～2.50, molybdenum Mo 0.20～0.80, surplus is iron Fe.
Described quasi-bainite steel also contains chromium Cr 0.25～2.80, and surplus is iron Fe.
Described quasi-bainite steel also contains nickel 0.50～1.50, and surplus is iron Fe.
A kind of quasi-bainite steel is a unit with the weight percent, contains carbon C 0.09～1.20, manganese Mn 0.80～3.20, and silicon Si 0.90～2.50, boron 0.002～0.005, surplus is iron Fe.
Described quasi-bainite steel also contains chromium Cr 0.25～2.80, and surplus is iron Fe.
Described quasi-bainite steel also contains nickel 0.50～1.50, and surplus is iron Fe.
A kind of quasi-bainite steel is a unit with the weight percent, contains carbon C 0.09～1.20, manganese Mn 0.80～3.20, and aluminium Al 0.80～2.50, boron 0.002～0.005, surplus is iron Fe.
Described quasi-bainite steel is characterized in that: also contain chromium Cr 0.25～2.80, surplus is iron Fe.
Described quasi-bainite steel is characterized in that: also contain nickel 0.50～1.50, surplus is iron Fe.
A kind of quasi-bainite steel is a unit with the weight percent, contains carbon C 0.09～1.20, manganese Mn 0.80～3.20, and silicon Si 0.25～1.50, aluminium Al 0.50～1.10, molybdenum Mo 0.20～0.80, surplus is iron Fe.
Described quasi-bainite steel also contains chromium Cr 0.25～2.80, and surplus is iron Fe.
Described quasi-bainite steel also contains nickel 0.50～1.50, and surplus is iron Fe.
A kind of quasi-bainite steel is a unit with the weight percent, contains carbon C 0.09～1.20, manganese Mn 0.80～3.20, and silicon Si 0.25～1.50, aluminium Al 0.50～1.10, boron 0.002～0.005, surplus is iron Fe.
Described quasi-bainite steel also contains chromium Cr 0.25～2.80, and surplus is iron Fe.
Described quasi-bainite steel also contains nickel 0.50～1.50, and surplus is iron Fe.
A kind of quasi-bainite steel is a unit with the weight percent, contains carbon C 0.09～1.20, manganese Mn 0.80～3.20, and silicon Si 0.25～1.50, boron 0.002～0.005, molybdenum Mo 0.25～0.40, surplus is iron Fe.
Described quasi-bainite steel also contains chromium Cr 0.25～2.80, and surplus is iron Fe.
Described quasi-bainite steel also contains nickel 0.50～1.50, and surplus is iron Fe.
A kind of quasi-bainite steel is a unit with the weight percent, contains carbon C 0.09～1.20, manganese Mn 0.80～3.20, and aluminium Al 0.50～1.10, boron 0.002～0.005, molybdenum Mo 0.25～0.40, surplus is iron Fe.
Described quasi-bainite steel also contains chromium Cr 0.25～2.80, and surplus is iron Fe.
Described quasi-bainite steel also contains nickel 0.50～1.50, and surplus is iron Fe.
A kind of quasi-bainite steel is a unit with the weight percent, contains carbon C 0.09～1.20, manganese Mn 0.80～3.20, and silicon Si 0.25～1.50, aluminium Al 0.50～1.10, boron 0.002～0.005, molybdenum Mo 0.25～0.40, surplus is iron Fe.
Described quasi-bainite steel also contains chromium Cr 0.25～2.80, and surplus is iron Fe.
Described quasi-bainite steel also contains nickel 0.50～1.50, and surplus is iron Fe.
A kind of quasi-bainite steel is a unit with the weight percent, contains carbon C 0.09～1.20, manganese Mn 0.80～3.20, and silicon Si 0.90～2.50, tungsten W 0.30～1.20, surplus is iron Fe.
Described quasi-bainite steel also contains chromium Cr 0.25～2.80, and surplus is iron Fe.
Described quasi-bainite steel also contains nickel 0.50～1.50, and surplus is iron Fe.
A kind of quasi-bainite steel is a unit with the weight percent, contains carbon C 0.09～1.20, manganese Mn 0.80～3.20, and aluminium Al 0.80～2.50, tungsten W 0.30～1.20, surplus is iron Fe.
Described quasi-bainite steel also contains chromium Cr 0.25～2.80, and surplus is iron Fe.
1 described quasi-bainite steel also contains nickel 0.50～1.50, and surplus is iron Fe.
A kind of quasi-bainite steel is a unit with the weight percent, contains carbon C 0.09～1.20, manganese Mn 0.80～3.20, and silicon Si 0.25～1.50, aluminium Al 0.50～1.10, tungsten W 0.30～1. 20, and surplus is iron Fe.
Described quasi-bainite steel also contains chromium Cr 0.25～2.80, and surplus is iron Fe.
Described quasi-bainite steel also contains nickel 0.50～1.50, and surplus is iron Fe.
A kind of quasi-bainite steel is a unit with the weight percent, contains carbon C 0.09～1.20, manganese Mn 0.80～3.20, and silicon Si 0.25～1.50, boron 0.002～0.005, tungsten W 0.30～1.20, surplus is iron Fe.
Described quasi-bainite steel also contains chromium Cr 0.25～2.80, and surplus is iron Fe.
Described quasi-bainite steel also contains nickel 0.50～1.50, and surplus is iron Fe.
A kind of quasi-bainite steel is a unit with the weight percent, contains carbon C 0.09～1.20, manganese Mn 0.80～3.20, and aluminium Al 0.50～1.10, boron 0.002～0.005, tungsten W 0.30～1.20, surplus is iron Fe.
Described quasi-bainite steel also contains chromium Cr 0.25～2.80, and surplus is iron Fe.
Described quasi-bainite steel also contains nickel 0.50～1.50, and surplus is iron Fe.
A kind of quasi-bainite steel is a unit with the weight percent, contains carbon C 0.09～1.20, manganese Mn 0.80～3.20, and silicon Si 0.25～1.50, aluminium Al 0.50～1.10, boron 0.002～0.005, tungsten W 0.30～1.20, surplus is iron Fe.
Described quasi-bainite steel also contains chromium Cr 0.25～2.80, and surplus is iron Fe.
Described quasi-bainite steel also contains nickel 0.50～1.50, and surplus is iron Fe.
Above the smelting process of all quasi-bainite steel, adopt electric furnace or converter+stove to carry out refining outward, the gas content of control molten steel is in refining process: nitrogen N
2≤ 80PPm, hydrogen H
2≤ 4PPm, oxygen O
2≤ 25PPm.
Above the heat treating method of all quasi-bainite steel, adopt 910 ℃～950 ℃ quenchings or air cooling or oil cooling+200 ℃～450 ℃ of low-temperaturetempering water-cooleds.
Quasi-bainite steel recited above when the content of carbon C during in 0.10～0.25 scope, can be applied on railroad bridge, railway bridge shape splice bar, profile material, welding assembly, hoisting machinery, construction(al)steel, the high intensity standard part.
Quasi-bainite steel recited above when the content of carbon C during in 0.20～0.35 scope, can be applied in railway heavy rail, high strength linepipe, carburized parts with on the steel.
Quasi-bainite steel recited above when the content of carbon C during in 0.30～0.70 scope, can be applied on railway switch, abrasion-proof structure, the wear-resistant cast steel parts.
Beneficial effect of the present invention:
1. quasi-bainite steel comprehensive mechanical property excellence of the present invention: referring to table 1, table 2, table 3, table 4, table 5 and table 6, by in the above-mentioned table as can be seen, the tensile strength of quasi-bainite steel of the present invention can reach the ultrahigh-strength steel that high-strength steel that 500～1050MPa engineering component uses, high-strength steel that 1050～1500MPa machine mechanical component is used and 1500～2000MPa machine mechanical component are used, and have high plasticity and toughness, good wear resistance simultaneously, low notch sensitivity, particularly notch fatigue life-span can stably improve 30～100%.Low-temperature impact toughness is good, can be under-40 ℃～-50 ℃ low temperature life-time service.The wear resistance height, it compares with V70SiMn and Mn13 track switch steel skid wearing test, and its attrition value sees table far below other steel grades:
| Steel grade | Steel grade of the present invention | ?V70SiMn | ??Mn13 |
| Skid wear rate mg/m (load 150Kg) | ??7.6 | ?282 | ??20 |
2. quasi-bainite steel complete processing of the present invention is simple, easy to manufacture, can be suitable for multiple heat treating method, can not thermal treatment or few thermal treatment under the situation of energy controlled rolling and controlled cooling.Quasi-bainite steel roll, air cooling can obtain the meta-bainite tissue under forging or the austenitic state, can reach needed mechanical property through proper temperature tempering or not tempering as required, therefore part is out of shape little in the mill, no quenching crack, thereby not only guarantee quality product but also improve its qualification rate, and reduce heat treatment step.Through measuring, all obtain tissue behind the part air cooling of diameter 10～1000mm, so hardening capacity is good, can quench in case of necessity or oil cooling also can obtain the good mechanical performance.
3. quasi-bainite steel weldability of the present invention is good.The bainite structure because quasi-bainite steel welding back air cooling still is as the criterion, welding front and back specific volume changes minimum, so it organizes internal stress little, the welding crack tendency is little.Measure through research, better than the structural alloy steel weldability with intensity, meta-bainite is organized anti-tempering ability height simultaneously, so the loss of the mechanical property of heat affected zone is less.
4. quasi-bainite steel good energy-conserving effect of the present invention, production efficiency height.Quasi-bainite steel roll, air cooling can obtain the meta-bainite tissue under forging or the austenitic state, so no longer carry out independent quench treatment, simplifies technical process, saves a large amount of energy, improve quality product and reduce production costs.
5. quasi-bainite steel of the present invention is with low cost, the production exploitation is convenient.Its main added elements is common carbon C, silicon Si, manganese Mn and a spot of molybdenum Mo or boron, so its cost is not high, consider particular requirement such as anti-corrosion, tired, high-hardenability etc., can add a spot of chromium Cr, nickel etc., general steel mill can organize production under the prerequisite that does not increase equipment, basically there is not smelting, cast, the difficulty of aspect such as rolling, process mensuration high temperature deformation drag there is no and obviously increases phenomenon, the cooling conditions that only should be noted that the production occasion in process of production gets final product, if roll, forge the back controlled chilling, mechanical property can increase substantially, needn't tempering or tempering under the low-temperature condition of a wider range, do not increasing under investment or the investment condition seldom and can produce like this.
6. quasi-bainite steel of the present invention is widely used.Be applicable to material such as railroad bridge, building, hoisting machinery, all kinds of High-strength plates of large scale structure frame and high speed rail, railway switch, high strength bolt; Be applicable to that the high-precision high-speed railroad train is with on wheel and the wheel hub; Be applicable to that heavy haul railway road pillow, culvert etc. are with on the high strength cast iron.
Four. embodiment:
Quasi-bainite steel of the present invention, each steel grade can be formed a plurality of embodiment according to the different of component and content, sees following table for details, and each components contents all is unit with per-cent in the table:
| The embodiment sequence number | Title and the content of forming each component of quasi-bainite steel of the present invention | |||||||||
| Carbon C | Manganese Mn | Silicon Si | Aluminium Al | Molybdenum Mo | Boron | Tungsten W | Chromium Cr | Nickel | Surplus | |
| ??1 | ??0.09 | ??0.80 | ??0.90 | ??0.20 | ??Fe | |||||
| ??2 | ??1.20 | ??3.20 | ??2.50 | ??0.80 | ??Fe | |||||
| ??3 | ??0.09 | ??3.20 | ??2.30 | ??0.60 | ??Fe | |||||
| ??4 | ??0.85 | ??1.75 | ??1.50 | ??0.40 | ??Fe | |||||
| ??5 | ??1.10 | ??2.45 | ??1.25 | ??0.58 | ??Fe | |||||
| ??6 | ??0.09 | ??0.80 | ??0.90 | ??0.20 | ??0.25 | ??Fe | ||||
| ??7 | ??1.20 | ??3.20 | ??2.50 | ??0.80 | ??2.80 | ??Fe | ||||
| ??8 | ??1.0 | ??1.80 | ??1.10 | ??0.30 | ??1.80 | ??Fe | ||||
| Sequence number | Carbon C | Manganese Mn | Silicon Si | Aluminium Al | Molybdenum Mo | Boron | Tungsten W | Chromium Cr | Nickel | Surplus |
| ??9 | ??1.11 | ??2.80 | ??1.40 | ??0.50 | ??2.35 | ??Fe | ||||
| ??10 | ??0.44 | ??3.05 | ??1.70 | ??0.70 | ??0.95 | ??Fe | ||||
| ??11 | ??0.10 | ??3.10 | ??1.10 | ??0.36 | ??0.32 | ??0.50 | ??Fe | |||
| ??12 | ??0.30 | ??2.90 | ??1.30 | ??0.45 | ??0.54 | ??1.50 | ??Fe | |||
| ??13 | ??0.60 | ??2.60 | ??1.50 | ??0.65 | ??1.22 | ??0.77 | ??Fe | |||
| ??14 | ??0.90 | ??2.30 | ??1.75 | ??0.55 | ??1.65 | ??0.99 | ??Fe | |||
| ??15 | ??1.10 | ??1.50 | ??1.95 | ??0.75 | ??2.33 | ??1.22 | ??Fe | |||
| ??16 | ??0.10 | ??0.80 | ??0.90 | ??0.20 | ??Fe | |||||
| ??17 | ??0.25 | ??3.20 | ??2.50 | ??0.80 | ??Fe | |||||
| ??18 | ??0.15 | ??2.65 | ??1.50 | ??0.35 | ??Fe | |||||
| ??19 | ??0.17 | ??1.89 | ??1.90 | ??0.55 | ??Fe | |||||
| ??20 | ??0.23 | ??0.98 | ??2.34 | ??0.75 | ??Fe | |||||
| ??21 | ??0.13 | ??0.90 | ??0.90 | ??0.40 | ??0.25 | ??Fe | ||||
| ??22 | ??0.17 | ??3.10 | ??1.90 | ??0.60 | ??2.80 | ??Fe | ||||
| ??23 | ??0.22 | ??2.80 | ??1.70 | ??0.70 | ??1.80 | ??Fe | ||||
| ??24 | ??0.13 | ??2.50 | ??1.32 | ??0.50 | ??0.66 | ??Fe | ||||
| ??25 | ??0.20 | ??2.35 | ??1.15 | ??0.30 | ??2.12 | ??Fe | ||||
| ??26 | ??0.10 | ??1.0 | ??1.0 | ??0.25 | ??0.50 | ??Fe | ||||
| ??27 | ??0.25 | ??1.45 | ??1.25 | ??0.35 | ??1.50 | ??Fe | ||||
| ??28 | ??0.24 | ??1.69 | ??1.45 | ??0.45 | ??0.75 | ??Fe | ||||
| ??29 | ??0.16 | ??2.27 | ??1.67 | ??0.55 | ??1.25 | ??Fe | ||||
| ??30 | ??0.20 | ??3.05 | ??1.89 | ??0.65 | ??0.88 | ??Fe | ||||
| ??31 | ??0.20 | ??0.80 | ??0.90 | ??0.80 | ??Fe | |||||
| ??32 | ??0.35 | ??3.20 | ??2.50 | ??0.20 | ??Fe | |||||
| ??33 | ??0.25 | ??0.70 | ??0.95 | ??0.25 | ??Fe | |||||
| ??34 | ??0.23 | ??0.90 | ??1.05 | ??0.30 | ??Fe | |||||
| ??35 | ??0.28 | ??1.10 | ??1.15 | ??0.35 | ??Fe | |||||
| ??36 | ??0.22 | ??1.30 | ??1.25 | ??0.45 | ??0.25 | ??Fe |
| Sequence number | Carbon C | Manganese Mn | Silicon Si | Aluminium Al | Molybdenum Mo | Boron | Tungsten W | Chromium Cr | Nickel | Surplus |
| ??37 | ??0.24 | ??1.50 | ??1.45 | ??0.40 | ??2.80 | ??Fe | ||||
| ??38 | ??0.26 | ??1.70 | ??1.65 | ??0.50 | ??0.75 | ??Fe | ||||
| ??39 | ??0.28 | ??1.90 | ??1.85 | ??0.60 | ??1.55 | ??Fe | ||||
| ??40 | ??0.30 | ??2.10 | ??2.05 | ??0.55 | ??2.35 | ??Fe | ||||
| ??41 | ??0.32 | ??2.30 | ??2.15 | ??0.65 | ??0.54 | ??0.50 | ??Fe | |||
| ??42 | ??0.34 | ??2.60 | ??2.25 | ??0.75 | ??0.65 | ??1.50 | ??Fe | |||
| ??43 | ??0.33 | ??2.80 | ??2.35 | ??0.70 | ??0.95 | ??0.74 | ??Fe | |||
| ??44 | ??0.23 | ??3.0 | ??2.45 | ??0.67 | ??2.35 | ??0.96 | ??Fe | |||
| ??45 | ??0.27 | ??3.20 | ??1.95 | ??0.34 | ??2.65 | ??1.03 | ??Fe | |||
| ??46 | ??0.30 | ??0.80 | ??2.30 | ??0.20 | ??Fe | |||||
| ??47 | ??0.70 | ??3.20 | ??2.20 | ??0.80 | ??Fe | |||||
| ??48 | ??0.31 | ??3.15 | ??2.10 | ??0.23 | ??Fe | |||||
| ??49 | ??0.33 | ??3.10 | ??2.0 | ??0.26 | ??Fe | |||||
| ??50 | ??0.35 | ??3.05 | ??1.90 | ??0.29 | ??Fe | |||||
| ??51 | ??0.37 | ??2.95 | ??1.80 | ??0.32 | ??0.25 | ??Fe | ||||
| ??52 | ??0.39 | ??2.85 | ??1.70 | ??0.36 | ??2.80 | ??Fe | ||||
| ??53 | ??0.41 | ??2.75 | ??1.60 | ??0.39 | ??0.34 | ??Fe | ||||
| ??54 | ??0.43 | ??2.65 | ??1.50 | ??0.42 | ??1.44 | ??Fe | ||||
| ??55 | ??0.45 | ??2.55 | ??1.40 | ??0.45 | ??1.54 | ??Fe | ||||
| ??56 | ??0.47 | ??2.45 | ??1.30 | ??0.47 | ??1.64 | ??0.50 | ??Fe | |||
| ??57 | ??0.57 | ??2.35 | ??1.20 | ??0.49 | ??2.74 | ??1.50 | ??Fe | |||
| ??58 | ??0.67 | ??2.25 | ??1.10 | ??0.54 | ??1.84 | ??1.30 | ??Fe | |||
| ??59 | ??0.59 | ??2.15 | ??0.90 | ??0.58 | ??0.89 | ??1.05 | ??Fe | |||
| ??60 | ??0.48 | ??2.05 | ??2.50 | ??0.63 | ??1.72 | ??0.78 | ??Fe | |||
| ??61 | ??0.09 | ??1.23 | ??0.80 | ??0.20 | ??Fe | |||||
| ??62 | ??1.20 | ??1.74 | ??2.50 | ??0.80 | ??Fe | |||||
| ??63 | ??0.10 | ??2.19 | ??0.85 | ??0.23 | ??Fe | |||||
| ??64 | ??0.12 | ??2.27 | ??0.94 | ??0.29 | ??Fe |
| Sequence number | Carbon C | Manganese Mn | Silicon Si | Aluminium Al | Molybdenum Mo | Boron | Tungsten W | Chromium Cr | Nickel | Surplus |
| ??65 | ??1.14 | ??2.38 | ??2.0 | ??0.31 | ??Fe | |||||
| ??66 | ??0.22 | ??2.49 | ??2.03 | ??0.36 | ??1.36 | ??Fe | ||||
| ??67 | ??0.33 | ??2.51 | ??2.15 | ??0.45 | ??1.23 | ??Fe | ||||
| ??68 | ??0.28 | ??2.63 | ??2.27 | ??0.49 | ??0.54 | ??Fe | ||||
| ??69 | ??0.30 | ??2.74 | ??2.39 | ??0.51 | ??0.79 | ??Fe | ||||
| ??70 | ??0.43 | ??2.85 | ??2.43 | ??0.57 | ??1.49 | ??Fe | ||||
| ??71 | ??0.54 | ??2.95 | ??1.05 | ??0.63 | ??1.35 | ??0.50 | ??Fe | |||
| ??72 | ??0.65 | ??3.05 | ??1.09 | ??0.64 | ??2.25 | ??1.50 | ??Fe | |||
| ??73 | ??0.76 | ??3.15 | ??1.18 | ??0.72 | ??1.80 | ??0.64 | ??Fe | |||
| ??74 | ??0.88 | ??3.20 | ??1.27 | ??0.75 | ??2.80 | ??1.39 | ??Fe | |||
| ??75 | ??0.91 | ??0.80 | ??1.57 | ??0.78 | ??0.25 | ??1.0 | ??Fe | |||
| ??76 | ??0.09 | ??3.20 | ??0.90 | ??0.005 | ??Fe | |||||
| ??77 | ??1.20 | ??0.80 | ??2.50 | ??0.002 | ??Fe | |||||
| ??78 | ??0.10 | ??2.50. | ??1.0 | ??0.003 | ??Fe | |||||
| ??79 | ??0.20 | ??2.20 | ??1.10 | ??0.004 | ??Fe | |||||
| ??80 | ??0.30 | ??2.0 | ??1.20 | ??0.002 | ??Fe | |||||
| ??81 | ??0.40 | ??1.80 | ??1.30 | ??0.005 | ??2.80 | ??Fe | ||||
| ??82 | ??0.50 | ??1.60 | ??1.40 | ??0.003 | ??0.25 | ??Fe | ||||
| ??83 | ??0.60 | ??1.50 | ??1.50 | ??0.004 | ??2.75 | ??Fe | ||||
| ??84 | ??0.70 | ??1.40 | ??1.60 | ??0.002 | ??2.55 | ??Fe | ||||
| ??85 | ??0.80 | ??1.30 | ??1.70 | ??0.003 | ??2.35 | ??Fe | ||||
| ??86 | ??0.90 | ??1.20 | ??1.80 | ??0.005 | ??2.15 | ??0.50 | ??Fe | |||
| ??87 | ??1.0 | ??1.10 | ??1.90 | ??0.004 | ??1.95 | ??1.50 | ??Fe | |||
| ??88 | ??1.10 | ??0.90 | ??2.0 | ??0.002 | ??1.75 | ??0.69 | ??Fe | |||
| ??89 | ??1.20 | ??0.80 | ??2.10 | ??0.003 | ??1.55 | ??0.98 | ??Fe | |||
| ??90 | ??1.15 | ??3.20 | ??2.20 | ??0.005 | ??1.35 | ??0.23 | ??Fe | |||
| ??91 | ??0.09 | ??3.10 | ??0.80 | ??0.002 | ??Fe | |||||
| ??92 | ??1.20 | ??2.90 | ??2.50 | ??0.003 | ??Fe |
| Sequence number | Carbon C | Manganese Mn | Silicon Si | Aluminium Al | Molybdenum Mo | Boron | Tungsten W | Chromium Cr | Nickel | Surplus |
| ??93 | ??0.10 | ??2.70 | ??0.90 | ??0.004 | ??Fe | |||||
| ??94 | ??0.21 | ??2.50 | ??1.0 | ??0.005 | ??Fe | |||||
| ??95 | ??0.44 | ??2.30 | ??1.10 | ??0.005 | ??Fe | |||||
| ??96 | ??0.36 | ??2.10 | ??1.20 | ??0.004 | ??1.31 | ??Fe | ||||
| ??97 | ??0.59 | ??1.90 | ??1.30 | ??0.003 | ??1.49 | ??Fe | ||||
| ??98 | ??0.61 | ??1.70 | ??1.41 | ??0.003 | ??1.67 | ??Fe | ||||
| ??99 | ??0.72 | ??1.50 | ??1.52 | ??0.002 | ??1.85 | ??Fe | ||||
| ??100 | ??0.83 | ??1.30 | ??1.63 | ??0.004 | ??2.06 | ??Fe | ||||
| ??101 | ??0.94 | ??1.10 | ??1.74 | ??0.005 | ??2.23 | ??1.50 | ??Fe | |||
| ??102 | ??1.01 | ??1.0 | ??1.86 | ??0.002 | ??2.48 | ??1.30 | ??Fe | |||
| ??103 | ??1.08 | ??0.90 | ??1.98 | ??0.002 | ??2.64 | ??1.0 | ??Fe | |||
| ??104 | ??1.13 | ??0.80 | ??2.01 | ??0.004 | ??2.80 | ??0.75 | ??Fe | |||
| ??105 | ??1.15 | ??3.20 | ??2.19 | ??0.002 | ??0.25 | ??0.50 | ??Fe | |||
| ??106 | ??1.20 | ??2.83 | ??0.25 | ??0.50 | ??0.77 | ??Fe | ||||
| ??107 | ??0.09 | ??2.64 | ??1.50 | ??1.10 | ??0.80 | ??Fe | ||||
| ??108 | ??0.10 | ??3.15 | ??0.35 | ??1.05 | ??0.75 | ??Fe | ||||
| ??109 | ??0.23 | ??3.07 | ??0.45 | ??1.0 | ??0.70 | ??Fe | ||||
| ??110 | ??0.38 | ??2.98 | ??0.54 | ??0.95 | ??0.65 | ??Fe | ||||
| ??111 | ??0.47 | ??2.76 | ??0.63 | ??0.90 | ??0.60 | ??2.65 | ??Fe | |||
| ??112 | ??0.53 | ??2.54 | ??0.73 | ??0.85 | ??0.55 | ??1.92 | ??Fe | |||
| ??113 | ??0.64 | ??2.31 | ??0.86 | ??0.80 | ??0.50 | ??1.79 | ??Fe | |||
| ??114 | ??0.79 | ??1.98 | ??0.99 | ??0.75 | ??0.45 | ??1.57 | ??Fe | |||
| ??115 | ??0.84 | ??1.74 | ??1.07 | ??0.70 | ??0.40 | ??1.39 | ??Fe | |||
| ??116 | ??0.96 | ??1.52 | ??1.12 | ??0.65 | ??0.35 | ??1.03 | ??0.91 | ??Fe | ||
| ??117 | ??1.03 | ??1.30 | ??1.23 | ??0.60 | ??0.30 | ??0.85 | ??0.78 | ??Fe | ||
| ??118 | ??1.15 | ??0.94 | ??1.32 | ??0.55 | ??0.25 | ??0.46 | ??1.43 | ??Fe | ||
| ??119 | ??1.20 | ??3.20 | ??1.46 | ??0.50 | ??0.80 | ??2.80 | ??1.50 | ??Fe | ||
| ??120 | ??0.09 | ??0.80 | ??1.50 | ??1.08 | ??0.20 | ??0.25 | ??0.50 | ??Fe |
| Sequence number | Carbon C | Manganese Mn | Silicon Si | Aluminium Al | Molybdenum Mo | Boron | Tungsten W | Chromium Cr | Nickel | Surplus |
| ??121 | ??0.09 | ??3.08 | ??0.25 | ??0.50 | ??0.003 | ??Fe | ||||
| ??122 | ??1.20 | ??2.94 | ??1.50 | ??1.10 | ??0.004 | ??Fe | ||||
| ??123 | ??1.10 | ??2.79 | ??0.35 | ??0.99 | ??0.002 | ??Fe | ||||
| ??124 | ??1.05 | ??2.58 | ??0.45 | ??1.05 | ??0.005 | ??Fe | ||||
| ??125 | ??1.0 | ??2.37 | ??0.55 | ??0.91 | ??0.003 | ??Fe | ||||
| ??126 | ??0.95 | ??2.01 | ??0.65 | ??0.87 | ??0.002 | ??0.25 | ??Fe | |||
| ??127 | ??0.83 | ??1.93 | ??0.75 | ??0.74 | ??0.004 | ??2.80 | ??Fe | |||
| ??128 | ??0.76 | ??1.70 | ??0.85 | ??0.63 | ??0.004 | ??2.75 | ??Fe | |||
| ??129 | ??0.64 | ??1.50 | ??0.69 | ??0.59 | ??0.005 | ??2.65 | ??Fe | |||
| ??130 | ??0.53 | ??1.20 | ??0.95 | ??0.52 | ??0.003 | ??2.55 | ??Fe | |||
| ??131 | ??0.49 | ??1.10 | ??1.0 | ??0.67 | ??0.003 | ??2.35 | ??0.50 | ??Fe | ||
| ??132 | ??0.37 | ??1.0 | ??1.10 | ??0.79 | ??0.004 | ??2.15 | ??1.50 | ??Fe | ||
| ??133 | ??0.28 | ??0.90 | ??1.25 | ??0.85 | ??0.002 | ??1.96 | ??1.39 | ??Fe | ||
| ??134 | ??0.17 | ??0.80 | ??1.35 | ??0.91 | ??0.002 | ??1.74 | ??1.14 | ??Fe | ||
| ??135 | ??0.14 | ??3.20 | ??1.45 | ??1.03 | ??0.005 | ??1.35 | ??0.68 | ??Fe | ||
| ??136 | ??0.09 | ??3.08 | ??0.25 | ??0.25 | ??0.003 | ??Fe | ||||
| ??137 | ??1.20 | ??2.94 | ??1.50 | ??0.40 | ??0.004 | ??Fe | ||||
| ??138 | ??1.10 | ??2.79 | ??0.35 | ??0.21 | ??0.002 | ??Fe | ||||
| ??139 | ??1.05 | ??2.58 | ??0.45 | ??0.23 | ??0.005 | ??Fe | ||||
| ??140 | ??1.0 | ??2.37 | ??0.55 | ??0.25 | ??0.003 | ??Fe | ||||
| ??141 | ??0.95 | ??2.01 | ??0.65 | ??0.27 | ??0.002 | ??0.25 | ??Fe | |||
| ??142 | ??0.83 | ??1.93 | ??0.75 | ??0.29 | ??0.004 | ??2.80 | ??Fe | |||
| ??143 | ??0.76 | ??1.70 | ??0.85 | ??0.31 | ??0.004 | ??2.75 | ??Fe | |||
| ??144 | ??0.64 | ??1.50 | ??0.69 | ??0.33 | ??0.005 | ??2.65 | ??Fe | |||
| ??145 | ??0.53 | ??1.20 | ??0.95 | ??0.35 | ??0.003 | ??2.55 | ??Fe | |||
| ??146 | ??0.49 | ??1.10 | ??1.0 | ??0.37 | ??0.003 | ??2.35 | ??0.50 | ??Fe | ||
| ??147 | ??0.37 | ??1.0 | ??1.10 | ??0.39 | ??0.004 | ??2.15 | ??1.50 | ??Fe | ||
| ??148 | ??0.28 | ??0.90 | ??1.25 | ??0.34 | ??0.002 | ??1.96 | ??1.39 | ??Fe |
| Sequence number | Carbon C | Manganese Mn | Silicon Si | Aluminium Al | Molybdenum Mo | Boron | Tungsten W | Chromium Cr | Nickel | Surplus |
| ??149 | ??0.17 | ??0.80 | ??1.35 | ??0.26 | ??0.002 | ??1.74 | ??1.14 | ??Fe | ||
| ??150 | ??0.14 | ??3.20 | ??1.45 | ??0.28 | ??0.005 | ??1.35 | ??0.68 | ??Fe | ||
| ??151 | ??0.09 | ??3.08 | ??0.50 | ??0.25 | ??0.003 | ??Fe | ||||
| ??152 | ??1.20 | ??2.94 | ??1.10 | ??0.40 | ??0.004 | ??Fe | ||||
| ??153 | ??1.10 | ??2.79 | ??0.99 | ??0.21 | ??0.002 | ??Fe | ||||
| ??154 | ??1.05 | ??2.58 | ??1.05 | ??0.23 | ??0.005 | ??Fe | ||||
| ??155 | ??1.0 | ??2.37 | ??0.91 | ??0.25 | ??0.003 | ??Fe | ||||
| ??156 | ??0.95 | ??2.01 | ??0.87 | ??0.27 | ??0.002 | ??0.25 | ??Fe | |||
| ??157 | ??0.83 | ??1.93 | ??0.74 | ??0.29 | ??0.004 | ??2.80 | ??Fe | |||
| ??158 | ??0.76 | ??1.70 | ??0.63 | ??0.31 | ??0.004 | ??2.75 | ??Fe | |||
| ??159 | ??0.64 | ??1.50 | ??0.59 | ??0.33 | ??0.005 | ??2.65 | ??Fe | |||
| ??160 | ??0.53 | ??1.20 | ??0.52 | ??0.35 | ??0.003 | ??2.55 | ??Fe | |||
| ??161 | ??0.49 | ??1.10 | ??0.67 | ??0.37 | ??0.003 | ??2.35 | ??0.50 | ??Fe | ||
| ??162 | ??0.37 | ??1.0 | ??0.79 | ??0.39 | ??0.004 | ??2.15 | ??1.50 | ??Fe | ||
| ??163 | ??0.28 | ??0.90 | ??0.85 | ??0.34 | ??0.002 | ??1.96 | ??1.39 | ??Fe | ||
| ??164 | ??0.17 | ??0.80 | ??0.91 | ??0.26 | ??0.002 | ??1.74 | ??1.14 | ??Fe | ||
| ??165 | ??0.14 | ??3.20 | ??1.03 | ??0.28 | ??0.005 | ??1.35 | ??0.68 | ??Fe | ||
| ??166 | ??1.20 | ??2.83 | ??0.25 | ??0.50 | ??0.25 | ??0.003 | ??Fe | |||
| ??167 | ??0.09 | ??2.64 | ??1.50 | ??1.10 | ??0.40 | ??0.004 | ??Fe | |||
| ??168 | ??0.10 | ??3.15 | ??0.35 | ??1.05 | ??0.21 | ??0.002 | ??Fe | |||
| ??169 | ??0.23 | ??3.07 | ??0.45 | ??1.0 | ??0.23 | ??0.005 | ??Fe | |||
| ??170 | ??0.38 | ??2.98 | ??0.54 | ??0.95 | ??0.25 | ??0.003 | ??Fe | |||
| ??171 | ??0.47 | ??2.76 | ??0.63 | ??0.90 | ??0.27 | ??0.002 | ??1.31 | ??Fe | ||
| ??172 | ??0.53 | ??2.54 | ??0.73 | ??0.85 | ??0.29 | ??0.004 | ??1.49 | ??Fe | ||
| ??173 | ??0.64 | ??2.31 | ??0.86 | ??0.80 | ??0.31 | ??0.004 | ??1.67 | ??Fe | ||
| ??174 | ??0.79 | ??1.98 | ??0.99 | ??0.75 | ??0.33 | ??0.005 | ??1.85 | ??Fe | ||
| ??175 | ??0.84 | ??1.74 | ??1.07 | ??0.70 | ??0.35 | ??0.003 | ??2.06 | ??Fe | ||
| ??176 | ??0.96 | ??1.52 | ??1.12 | ??0.65 | ??0.37 | ??0.003 | ??2.23 | ??1.50 | ??Fe |
| Sequence number | Carbon C | Manganese Mn | Silicon Si | Aluminium Al | Molybdenum Mo | Boron | Tungsten W | Chromium Cr | Nickel | Surplus |
| ??177 | ??1.03 | ??1.30 | ??1.23 | ??0.60 | ??0.39 | ??0.004 | ??2.48 | ??1.30 | ??Fe | |
| ??178 | ??1.15 | ??0.94 | ??1.32 | ??0.55 | ??0.34 | ??0.002 | ??2.64 | ??1.0 | ??Fe | |
| ??179 | ??1.20 | ??3.20 | ??1.46 | ??0.50 | ??0.26 | ??0.002 | ??2.80 | ??0.75 | ??Fe | |
| ??180 | ??0.09 | ??0.80 | ??1.50 | ??1.08 | ??0.28 | ??0.005 | ??0.25 | ??0.50 | ??Fe | |
| ??181 | ??0.09 | ??0.80 | ??0.90 | ??0.30 | ??Fe | |||||
| ??182 | ??1.20 | ??3.20 | ??2.50 | ??1.20 | ??Fe | |||||
| ??183 | ??0.09 | ??3.20 | ??2.30 | ??0.40 | ??Fe | |||||
| ??184 | ??0.85 | ??1.75 | ??1.50 | ??0.50 | ??Fe | |||||
| ??185 | ??1.10 | ??2.45 | ??1.25 | ??0.60 | ??Fe | |||||
| ??186 | ??0.09 | ??0.80 | ??0.90 | ??0.70 | ??2.65 | ??Fe | ||||
| ??187 | ??1.20 | ??3.20 | ??2.50 | ??0.80 | ??1.92 | ??Fe | ||||
| ??188 | ??1.0 | ??1.80 | ??1.10 | ??0.90 | ??1.79 | ??Fe | ||||
| ??189 | ??1.11 | ??2.80 | ??1.40 | ??1.0 | ??1.57 | ??Fe | ||||
| ??190 | ??0.44 | ??3.05 | ??1.70 | ??1.10 | ??1.39 | ??Fe | ||||
| ??191 | ??0.10 | ??3.10 | ??1.10 | ??1.15 | ??1.03 | ??0.91 | ??Fe | |||
| ??192 | ??0.30 | ??2.90 | ??1.30 | ??1.05 | ??0.85 | ??0.78 | ??Fe | |||
| ??193 | ??0.60 | ??2.60 | ??1.50 | ??0.95 | ??0.46 | ??1.43 | ??Fe | |||
| ??194 | ??0.90 | ??2.30 | ??1.75 | ??0.85 | ??2.80 | ??1.50 | ??Fe | |||
| ??195 | ??1.10 | ??1.50 | ??1.95 | ??0.75 | ??0.25 | ??0.50 | ??Fe | |||
| ??196 | ??0.09 | ??3.08 | ??0.80 | ??0.65 | ??Fe | |||||
| ??197 | ??1.20 | ??2.94 | ??2.50 | ??0.55 | ??Fe | |||||
| ??198 | ??1.10 | ??2.79 | ??0.90 | ??0.45 | ??Fe | |||||
| ??199 | ??1.05 | ??2.58 | ??1.0 | ??0.35 | ??Fe | |||||
| ??200 | ??1.0 | ??2.37 | ??1.10 | ??0.38 | ??Fe | |||||
| ??201 | ??0.95 | ??2.01 | ??1.20 | ??0.43 | ??2.65 | ??Fe | ||||
| ??202 | ??0.83 | ??1.93 | ??1.30 | ??0.49 | ??1.92 | ??Fe | ||||
| ??203 | ??0.76 | ??1.70 | ??1.41 | ??0.58 | ??1.79 | ??Fe | ||||
| ??204 | ??0.64 | ??1.50 | ??1.52 | ??0.74 | ??1.57 | ??Fe |
| Sequence number | Carbon C | Manganese Mn | Silicon Si | Aluminium Al | Molybdenum Mo | Boron | Tungsten W | Chromium Cr | Nickel | Surplus |
| ??205 | ??0.53 | ??1.20 | ??1.63 | ??0.62 | ??1.39 | ??Fe | ||||
| ??206 | ??0.49 | ??1.10 | ??1.74 | ??0.89 | ??1.03 | ??0.91 | ??Fe | |||
| ??207 | ??0.37 | ??1.0 | ??1.86 | ??1.02 | ??0.85 | ??0.78 | ??Fe | |||
| ??208 | ??0.28 | ??0.90 | ??1.98 | ??1.13 | ??0.46 | ??1.43 | ??Fe | |||
| ??209 | ??0.17 | ??0.80 | ??2.01 | ??1.07 | ??2.80 | ??1.50 | ??Fe | |||
| ??210 | ??0.14 | ??3.20 | ??2.19 | ??1.19 | ??0.25 | ??0.50 | ??Fe | |||
| ??211 | ??1.20 | ??2.83 | ??0.25 | ??0.50 | ??0.30 | ??Fe | ||||
| ??212 | ??0.09 | ??2.64 | ??1.50 | ??1.10 | ??1.20 | ??Fe | ||||
| ??213 | ??0.10 | ??3.15 | ??0.35 | ??1.05 | ??0.40 | ??Fe | ||||
| ??214 | ??0.23 | ??3.07 | ??0.45 | ??1.0 | ??0.50 | ??Fe | ||||
| ??215 | ??0.38 | ??2.98 | ??0.54 | ??0.95 | ??0.60 | ??Fe | ||||
| ??216 | ??0.47 | ??2.76 | ??0.63 | ??0.90 | ??0.70 | ??2.65 | ??Fe | |||
| ??217 | ??0.53 | ??2.54 | ??0.73 | ??0.85 | ??0.80 | ??1.92 | ??Fe | |||
| ??218 | ??0.64 | ??2.31 | ??0.86 | ??0.80 | ??0.90 | ??1.79 | ??Fe | |||
| ??219 | ??0.79 | ??1.98 | ??0.99 | ??0.75 | ??1.0 | ??1.57 | ??Fe | |||
| ??220 | ??0.84 | ??1.74 | ??1.07 | ??0.70 | ??1.10 | ??1.39 | ??Fe | |||
| ??221 | ??0.96 | ??1.52 | ??1.12 | ??0.65 | ??1.15 | ??1.03 | ??0.91 | ??Fe | ||
| ??222 | ??1.03 | ??1.30 | ??1.23 | ??0.60 | ??1.05 | ??0.85 | ??0.78 | ??Fe | ||
| ??223 | ??1.15 | ??0.94 | ??1.32 | ??0.55 | ??0.95 | ??0.46 | ??1.43 | ??Fe | ||
| ??224 | ??1.20 | ??3.20 | ??1.46 | ??0.50 | ??0.85 | ??2.80 | ??1.50 | ??Fe | ||
| ??225 | ??0.09 | ??0.80 | ??1.50 | ??1.08 | ??0.75 | ??0.25 | ??0.50 | ??Fe | ||
| ??226 | ??1.20 | ??2.83 | ??0.25 | ??0.003 | ??0.65 | ??Fe | ||||
| ??227 | ??0.09 | ??2.64 | ??1.50 | ??0.004 | ??0.55 | ??Fe | ||||
| ??228 | ??0.10 | ??3.15 | ??0.35 | ??0.002 | ??0.45 | ??Fe | ||||
| ??229 | ??0.23 | ??3.07 | ??0.45 | ??0.005 | ??0.35 | ??Fe | ||||
| ??230 | ??0.38 | ??2.98 | ??0.54 | ??0.003 | ??0.38 | ??Fe | ||||
| ??231 | ??0.47 | ??2.76 | ??0.63 | ??0.002 | ??0.43 | ??0.25 | ??Fe | |||
| ??232 | ??0.53 | ??2.54 | ??0.73 | ??0.004 | ??0.49 | ??2.80 | ??Fe |
| Sequence number | Carbon C | Manganese Mn | Silicon Si | Aluminium Al | Molybdenum Mo | Boron | Tungsten W | Chromium Cr | Nickel | Surplus |
| ??233 | ??0.64 | ??2.31 | ??0.86 | ??0.004 | ??0.58 | ??1.80 | ??Fe | |||
| ??234 | ??0.79 | ??1.98 | ??0.99 | ??0.005 | ??0.74 | ??2.35 | ??Fe | |||
| ??235 | ??0.84 | ??1.74 | ??1.07 | ??0.003 | ??0.62 | ??0.95 | ??Fe | |||
| ??236 | ??0.96 | ??1.52 | ??1.12 | ??0.003 | ??0.89 | ??0.32 | ??0.50 | ??Fe | ||
| ??237 | ??1.03 | ??1.30 | ??1.23 | ??0.004 | ??1.02 | ??0.54 | ??1.50 | ??Fe | ||
| ??238 | ??1.15 | ??0.94 | ??1.32 | ??0.002 | ??1.13 | ??1.22 | ??0.77 | ??Fe | ||
| ??239 | ??1.20 | ??3.20 | ??1.46 | ??0.002 | ??1.07 | ??1.65 | ??0.99 | ??Fe | ||
| ??240 | ??0.09 | ??0.80 | ??1.50 | ??0.005 | ??1.19 | ??2.33 | ??1.22 | ??Fe | ||
| ??241 | ??1.20 | ??2.83 | ??0.50 | ??0.003 | ??0.30 | ??Fe | ||||
| ??242 | ??0.09 | ??2.64 | ??1.10 | ??0.004 | ??1.20 | ??Fe | ||||
| ??243 | ??0.10 | ??3.15 | ??1.05 | ??0.002 | ??0.40 | ??Fe | ||||
| ??244 | ??0.23 | ??3.07 | ??1.0 | ??0.005 | ??0.50 | ??Fe | ||||
| ??245 | ??0.38 | ??2.98 | ??0.95 | ??0.003 | ??0.60 | ??Fe | ||||
| ??246 | ??0.47 | ??2.76 | ??0.90 | ??0.002 | ??0.70 | ??0.25 | ??Fe | |||
| ??247 | ??0.53 | ??2.54 | ??0.85 | ??0.004 | ??0.80 | ??2.80 | ??Fe | |||
| ??248 | ??0.64 | ??2.31 | ??0.80 | ??0.004 | ??0.90 | ??1.80 | ??Fe | |||
| ??249 | ??0.79 | ??1.98 | ??0.75 | ??0.005 | ??1.0 | ??0.66 | ??Fe | |||
| ??250 | ??0.84 | ??1.74 | ??0.70 | ??0.003 | ??1.10 | ??2.12 | ??Fe | |||
| ??251 | ??0.96 | ??1.52 | ??0.65 | ??0.003 | ??1.15 | ??0.37 | ??0.50 | ??Fe | ||
| ??252 | ??1.03 | ??1.30 | ??0.60 | ??0.004 | ??1.05 | ??0.69 | ??1.50 | ??Fe | ||
| ??253 | ??1.15 | ??0.94 | ??0.55 | ??0.002 | ??0.95 | ??1.57 | ??0.75 | ??Fe | ||
| ??254 | ??1.20 | ??3.20 | ??0.50 | ??0.002 | ??0.85 | ??1.49 | ??1.25 | ??Fe | ||
| ??255 | ??0.09 | ??0.80 | ??1.08 | ??0.005 | ??0.75 | ??2.32 | ??0.88 | ??Fe | ||
| ??256 | ??1.20 | ??2.83 | ??0.25 | ??0.50 | ??0.005 | ??0.65 | ??Fe | |||
| ??257 | ??0.09 | ??2.64 | ??1.50 | ??1.10 | ??0.003 | ??0.55 | ??Fe | |||
| ??258 | ??0.10 | ??3.15 | ??0.35 | ??1.05 | ??0.004 | ??0.45 | ??Fe | |||
| ??259 | ??0.23 | ??3.07 | ??0.45 | ??1.0 | ??0.002 | ??0.35 | ??Fe | |||
| ??260 | ??0.38 | ??2.98 | ??0.54 | ??0.95 | ??0.005 | ??0.38 | ??Fe |
| Sequence number | Carbon C | Manganese Mn | Silicon Si | Aluminium Al | Molybdenum Mo | Boron | Tungsten W | Chromium Cr | Nickel | Surplus |
| ??261 | ??0.47 | ??2.76 | ??0.63 | ??0.90 | ??0.003 | ??0.43 | ??0.25 | ??Fe | ||
| ??262 | ??0.53 | ??2.54 | ??0.73 | ??0.85 | ??0.002 | ??0.49 | ??2.80 | ??Fe | ||
| ??263 | ??0.64 | ??2.31 | ??0.86 | ??0.80 | ??0.004 | ??0.58 | ??0.75 | ??Fe | ||
| ??264 | ??0.79 | ??1.98 | ??0.99 | ??0.75 | ??0.004 | ??0.74 | ??1.55 | ??Fe | ||
| ??265 | ??0.84 | ??1.74 | ??1.07 | ??0.70 | ??0.005 | ??0.62 | ??2.35 | ??Fe | ||
| ??266 | ??0.96 | ??1.52 | ??1.12 | ??0.65 | ??0.003 | ??0.89 | ??0.54 | ??0.50 | ??Fe | |
| ??267 | ??1.03 | ??1.30 | ??1.23 | ??0.60 | ??0.003 | ??1.02 | ??0.65 | ??1.50 | ??Fe | |
| ??268 | ??1.15 | ??0.94 | ??1.32 | ??0.55 | ??0.004 | ??1.13 | ??0.95 | ??0.74 | ??Fe | |
| ??269 | ??1.20 | ??3.20 | ??1.46 | ??0.50 | ??0.002 | ??1.07 | ??2.35 | ??0.96 | ??Fe | |
| ??270 | ??0.09 | ??0.80 | ??1.50 | ??1.08 | ??0.002 | ??1.19 | ??2.65 | ??1.03 | ??Fe |
More than the smelting process of quasi-bainite steel of each embodiment be: adopt electric furnace or converter+stove to carry out refining outward, the gas content of control molten steel is in refining process: nitrogen N
2≤ 80PPm, hydrogen H
2≤ 4PPm, oxygen O
2≤ 25PPm; Its heat treating method adopts 910 ℃～950 ℃ quenchings or air cooling or oil cooling+200 ℃～450 ℃ of low-temperaturetempering water-cooleds to get final product.
Embodiment 16 to embodiment 30 described quasi-bainite steels can be applied on railroad bridge, railway bridge shape splice bar, profile material, welding assembly, hoisting machinery, construction(al)steel, the high intensity standard part.
The embodiment hentriaconta-can be applied in railway heavy rail, high strength linepipe, carburized parts with on the steel to embodiment 45 described quasi-bainite steels.
Embodiment 46 to embodiment 60 described quasi-bainite steels can be applied on railway switch, abrasion-proof structure, the wear-resistant cast steel parts.
The conventional mechanical property of table 1 quasi-bainite steel of the present invention
Table 2 quasi-bainite steel and other steel grade wear resisting propertys are relatively
| Grade of steel | Initial hardness HV | The pin mill decreases test | Impact wear test | Damp sand rubber wheel wearing test | Roll/test of sliding wear damage *2 wear rates, mg/m | Remarks |
| Relative wear resistance *1 | ||||||
| Domestic Mn13 | ????247 | ????1.00 | ????1.00 | ????1.00 | ????20.0 | Wear resistance castings |
| Quasi-bainite steel of the present invention | ????377 | ????- | ????1.12 | ????1.85 | ????7.6 | The garden loop chain |
| Quasi-bainite steel of the present invention | ????490 | ????1.80 | ????1.52 | ????- | ????- | Pick, track switch, rail |
| The 23MnCrNiMo54 of Japan | ????436 | ????- | ????1.09 | ????1.75 | ????20.1 | Import garden loop chain steel |
| Domestic 42CrMoA | ????470 | ????1.41 | ????1.45 | ????- | ????- | Pick |
| Domestic 35CrMnSiA | ????470 | ????1.33 | ????1.39 | ????- | ????- | Pick |
| Domestic U70MnSi | ????300 | ????- | ????- | ????- | ????282.0 | Rail |
| Quasi-bainite steel of the present invention | ????551 | ????1.33 | ????1.33 | ????- | ????- | Foundry goods |
| The TEREXHB400 high hardness wear-resisting plate of Japan | ????385 | ????1.00 | ????- | ????- | ????- | The high hard wearing plate (making standard specimen) of Sweden's import |
| Domestic MYNM-400 (quasi-bainite steel wearing plate) | ????390 | ????1.12 | ????- | ????- | ????- | For the high hard wearing plate of Sweden's import |
*1 relative wear resistance standard specimen (Mn13 or TEREXHB400) wear weight loss/sample (other steel grades) wear weight loss
*2 roll/test of sliding wear damage, and load is got 150Kg, and sliding rate r=sample wear weight loss (mg)/up and down sample relatively sliding of diving distance (m) is got r=35%, and last sample is Mn13, BZ-15,23MnCrNiMo54 and U70MnSi, and following sample is 65Mn (modified).
Steel performance comparison and applicable cases that table 3 high strength quasi-bainite steel engineering component is close with other intensity are given an example
| Steel grade | State | Yield strength σ 0.2，MPa | Tensile strength sigma b，MPa | Elongation δ 5，％ | Reduction of area ψ, % | Ballistic work Akv, the J room temperature | Remarks | ||
| Normal temperature | ??-20℃ | ??-60℃ | |||||||
| Quasi-bainite steel of the present invention | The hot rolling cooling in heap | ??/ | ??625 | ??31 | ??/ | ??159 | ??54 | ??/ | Produced the meta-bainite steel plate, can be for Japanese NKK-HITEN590 steel plate and homemade 16MnVN steel plate etc. |
| Hot rolling+high tempering | ??490 | ??600 | ??28 | ??/ | ??168 | ??120 | ??/ | ||
| The NKK-HITEN590 of Japan | Quenching+tempering | ??＞450 | ??590～710 | ??＞20 | ??/ | ??/ | ??＞47 | ??/ | Japan produces steel plate |
| Domestic 16MnVN | Normalizing | ??425 | ??592 | ??16.5 | ??/ | ??40 | ??/ | ??/ | Homemade steel plate |
| Quasi-bainite steel of the present invention | Hot rolling+low-temperaturetempering | ??760 | ??893 | ??24 | ??/ | ??80 | ??60 | ??/ | Can replace Japanese NKK-HITEN780 |
| The NKK-HITEN780 of Japan | Quenching+tempering | ??≥685 | ??780～930 | ??≥16 | ??/ | ??/ | ??/ | ??/ | Japan produces, high-strength panel |
| Quasi-bainite steel of the present invention | Hot rolling+low-temperaturetempering | ??840 | ??1058 | ??17 | ??/ | ??100 | ??/ | ??35 | Can replace Japanese NKK-HITEN980 |
| The NKK-HITEN980 of Japan | Quenching+tempering | ??≥835 | ??≥930 | ??≥12 | ??/ | ??/ | ??/ | ??≥27 | Japan produces, maximum intensity sheet material |
| Quasi-bainite steel of the present invention | Hot rolling | ??865 | ??1050 | ??13 | ??40 | ??30 | ??/ | ??/ | For the IV grade reinforcing steel, technology is simple |
| Domestic IV grade reinforcing steel | Quenching+tempering | ??≥540 | ??≥835 | ??≥10 | ??/ | ??/ | ??/ | ??/ | Homemade IV grade standard reinforcing bar |
But table 4 high strength meta-bainite steel part and wear-resisting and weldment are given an example with other intensity close steel comparison and applicable cases
| Steel grade | State | Yield strength σ 0.2, MPa | Tensile strength sigma b, MPa | Elongation δ 5, % | Reduction of area ψ, % | Ballistic work Akv, the J room temperature | Remarks | |
| Normal temperature | -40 ℃ | |||||||
| Quasi-bainite steel of the present invention | Hot rolling+low-temperaturetempering | 959 | 1137 | 16 | 59 | 100 | / | Super-strength sucker rod, drill collar, colliery hydraulic prop tube have been produced. |
| Quasi-bainite steel of the present invention | Hot rolling+high tempering | 1070 | 1200 | 15 | 43 | 30 | / | Can replace PD 3, heavy rails such as NHH |
| Domestic PD3 rail | Slack quenching | / | 〉= | 〉=8 | / | / | / | Homemade best rail material |
| The NHH rail of France | Quenching+tempering | 820 | 1200 | 12 | / | / | / | Japanese product |
| Quasi-bainite steel of the present invention | Hot rolling or normalizing+low-temperaturetempering | 1075 | 1200 | 18 | 54 | 200 | / | Produced heavy carburized gears, heavy carburizing drill steel, mining C level garden loop chain, high hardness wear-resisting plate. |
| Domestic 18Cr2Ni4WA | Quenching+tempering | 〉=835 | 〉=1175 | 〉=10 | 〉=45 | 〉=42 | / | Heavy carbonized Gear Steel replaces with BZ-15 |
| The 23MnNiCrMo54 of Japan | Quenching+tempering | 〉=980 | 〉=1180 | 〉=10 | 〉=45 | 〉=52 | / | Mining C level garden loop chain import steel replace with BZ-15. |
| The NK-EH-360 of Japan | Quenching+tempering | 930 | 1150 | 16.5 | / | 43 | / | The high hardness wear-resisting plate, the import steel replace with BZ-15. |
| Quasi-bainite steel of the present invention | Hot rolling or normalizing+low-temperaturetempering | 960～1100 | 1250～1600 | 12～14 | 40～50 | 50～100 | 30 | Produce wearing plate for the import steel, and produced railway switch and heavy bore bit etc. |
| The TEREXHB400 high hardness wear-resisting plate of Sweden | Quenching+tempering | 1000 | 1250 | 10 | / | / | 20 | Be the trial value of thickness of slab 20mm, imported materials and items substitutes with BZ-25. |
The superstrength steel mechanical property comparison that table 5 superstrength quasi-bainite steel is close with other intensity and its substitute situation for example
| Steel grade | State | Yield strength σ 0.2, MPa | Tensile strength sigma b, MPa | Elongation δ 5, % | Reduction of area ψ, % | Ballistic work Akv, the J room temperature | Remarks |
| Quasi-bainite steel of the present invention | Normalizing+low-temperaturetempering | 1310 | 1570 | 14 | 50 | 57 | Produced track switch, for German product |
| SIIOV (German track switch steel) | Quenching+tempering | 1435 | 1550 | 10.5 | - | - | Germany's product substitutes with BZ-25 |
| Quasi-bainite steel of the present invention | Normalizing+low-temperaturetempering | 1620 | 1800 | 11 | 42 | 33 | Make pick for 42CrMo, electrosmelting. |
| Domestic 42CrMoA | Quenching+tempering | 1402 | 1703 | 11 | 40 | 22 | The pick steel |
| Quasi-bainite steel of the present invention | Hot rolling and air cooling | 1426 | 1944 | 9 | 43 | 28 | The electrosmelting steel can be for D6ac and 300M |
| Hot rolling+low-temperaturetempering | 1581 | 1849 | 11 | 50 | 30 | ||
| The D6ac of the U.S. | + 540 ℃ of tempering of quenching | 1484 | 1613 | 13.7 | 49 | 26 | Take from two vacuum metlings of the U.S. and thermal treatment data |
| The 300M of the U.S. + | + 540 ℃ of tempering of quenching | 1690 | 1990 | 9.5 | 43 | 29.8 |
Table 6 quasi-bainite steel carburizing examples of properties
| Steel grade | State | Yield strength σ 0.2，MPa | Tensile strength sigma b，MPa | Elongation δ 5，％ | Reduction of area ψ, % | Ballistic work Akv, J | Surface hardness HRC | Centre hardness HRC | Relative wear resistance | Remarks | |
| The pin dish | Impact | ||||||||||
| Domestic heavy carburizing drill steel steel 23CrNi3MoA | + 200 ℃ of tempering of heart portion quenching | ??≥835 | ??≥1175 | ??≥10 | ??≥45 | ??≥42 | ??58～63 | ??32～48 | ??- | ??- | ??- |
| Domestic heavy carbonized Gear Steel 18Cr2Ni4WA | + 200 ℃ of tempering of heart portion quenching | ||||||||||
| Quasi-bainite steel of the present invention | Heart portion air cooling+200 ℃ of tempering | ??1018 | ??1248 | ??17 | ??43 | ??120 | ??- | ??- | ??- | ??- | Can be for 23CrNi3MoA steel and 18Cr2Ni4WA steel |
| Quasi-bainite steel of the present invention | Air cooling+200 ℃ tempering | ??- | ??- | ??- | ??- | ??- | ??64.5 | ??41 | ??1.001 | ??1.12 | The wear-resisting 18Cr2NiWA that is better than |
| Quasi-bainite steel of the present invention | Air cooling+200 ℃ tempering | ??- | ??- | ??- | ??- | ??- | ??60.2 | ??44.8 | Life-span is better than the 23CrNi3MoA steel | ||
| Domestic heavy-duty gear 18Cr2Ni4WA carburizing | Air cooling+200 ℃ tempering | ??- | ??- | ??- | ??- | ??- | ??58.9 | ??42.1 | ??1.00 | ??1.00 | The relative wear resistance standard specimen |
Claims (59)
1. quasi-bainite steel, it is characterized in that: with the weight percent is unit, contains carbon C 0.09～1.20, manganese Mn 0.80～3.20, silicon Si 0.90～2.50, molybdenum Mo 0.20～0.80, surplus is iron Fe.
2. quasi-bainite steel according to claim 1 is characterized in that: also contain chromium Cr 0.25～2.80, surplus is iron Fe.
3. quasi-bainite steel according to claim 2 is characterized in that: also contain nickel 0.50～1.50, surplus is iron Fe.
4. quasi-bainite steel, it is characterized in that: with the weight percent is unit, contains carbon C 0.10～0.25, manganese Mn 0.80～3.20, silicon Si 0.90～2.50, molybdenum Mo 0.20～0.80, surplus is iron Fe.
5. quasi-bainite steel according to claim 4 is characterized in that: also contain chromium Cr 0.25～2.80, surplus is iron Fe.
6. quasi-bainite steel according to claim 5 is characterized in that: also contain nickel 0.50～1.50, surplus is iron Fe.
7. quasi-bainite steel, it is characterized in that: with the weight percent is unit, contains carbon C 0.20～0.35, manganese Mn 0.80～3.20, silicon Si 0.90～2.50, molybdenum Mo 0.20～0.80, surplus is iron Fe.
8. quasi-bainite steel according to claim 7 is characterized in that: also contain chromium Cr 0.25～2.80, surplus is iron Fe.
9. quasi-bainite steel according to claim 8 is characterized in that: also contain nickel 0.50～1.50, surplus is iron Fe.
10. quasi-bainite steel, it is characterized in that: with the weight percent is unit, contains carbon C 0.30～0.70, manganese Mn 0.80～3.20, silicon Si 0.90～2.50, molybdenum Mo 0.20～0.80, surplus is iron Fe.
11. quasi-bainite steel according to claim 10 is characterized in that: also contain chromium Cr 0.25～2.80, surplus is iron Fe.
12. quasi-bainite steel according to claim 11 is characterized in that: also contain nickel 0.50～1.50, surplus is iron Fe.
13. a quasi-bainite steel is characterized in that: with the weight percent is unit, contains carbon C 0.09～1.20, manganese Mn 0.80～3.20, and aluminium Al 0.80～2.50, molybdenum Mo 0.20～0.80, surplus is iron Fe.
14. quasi-bainite steel according to claim 13 is characterized in that: also contain chromium Cr 0.25～2.80, surplus is iron Fe.
15. quasi-bainite steel according to claim 14 is characterized in that: also contain nickel 0.50～1.50, surplus is iron Fe.
16. a quasi-bainite steel is characterized in that: with the weight percent is unit, contains carbon C 0.09～1.20, manganese Mn 0.80～3.20, and silicon Si 0.90～2.50, boron 0.002～0.005, surplus is iron Fe.
17. quasi-bainite steel according to claim 16 is characterized in that: also contain chromium Cr 0.25～2.80, surplus is iron Fe.
18. quasi-bainite steel according to claim 17 is characterized in that: also contain nickel 0.50～1.50, surplus is iron Fe.
19. a quasi-bainite steel is characterized in that: with the weight percent is unit, contains carbon C 0.09～1.20, manganese Mn 0.80～3.20, and aluminium Al 0.80～2.50, boron 0.002～0.005, surplus is iron Fe.
20. quasi-bainite steel according to claim 19 is characterized in that: also contain chromium Cr 0.25～2.80, surplus is iron Fe.
21. quasi-bainite steel according to claim 20 is characterized in that: also contain nickel 0.50～1.50, surplus is iron Fe.
22. a quasi-bainite steel is characterized in that: with the weight percent is unit, contains carbon C 0.09～1.20, manganese Mn 0.80～3.20, and silicon Si 0.25～1.50, aluminium Al 0.50～1.10, molybdenum Mo 0.20～0.80, surplus is iron Fe.
23. quasi-bainite steel according to claim 22 is characterized in that: also contain chromium Cr 0.25～2.80, surplus is iron Fe.
24. quasi-bainite steel according to claim 23 is characterized in that: also contain nickel 0.50～1.50, surplus is iron Fe.
25. a quasi-bainite steel is characterized in that: with the weight percent is unit, contains carbon C 0.09～1.20, manganese Mn 0.80～3.20, and silicon Si 0.25～1.50, aluminium Al 0.50～1.10, boron 0.002～0.005, surplus is iron Fe.
26. quasi-bainite steel according to claim 25 is characterized in that: also contain chromium Cr 0.25～2.80, surplus is iron Fe.
27. quasi-bainite steel according to claim 26 is characterized in that: also contain nickel 0.50～1.50, surplus is iron Fe.
28. a quasi-bainite steel is characterized in that: with the weight percent is unit, contains carbon C 0.09～1.20, manganese Mn 0.80～3.20, and silicon Si 0.25～1.50, boron 0.002～0.005, molybdenum Mo 0.25～0.40, surplus is iron Fe.
29. quasi-bainite steel according to claim 28 is characterized in that: also contain chromium Cr 0.25～2.80, surplus is iron Fe.
30. quasi-bainite steel according to claim 29 is characterized in that: also contain nickel 0.50～1.50, surplus is iron Fe.
31. a quasi-bainite steel is characterized in that: with the weight percent is unit, contains carbon C 0.09～1.20, manganese Mn 0.80～3.20, and aluminium Al 0.50～1.10, boron 0.002～0.005, molybdenum Mo 0.25～0.40, surplus is iron Fe.
32. quasi-bainite steel according to claim 31 is characterized in that: also contain chromium Cr 0.25～2.80, surplus is iron Fe.
33. quasi-bainite steel according to claim 32 is characterized in that: also contain nickel 0.50～1.50, surplus is iron Fe.
34. a quasi-bainite steel is characterized in that: with the weight percent is unit, contains carbon C 0.09～1.20, manganese Mn 0.80～3.20, and silicon Si 0.25～1.50, aluminium Al 0.50～1.10, boron 0.002～0.005, molybdenum Mo 0.25～0.40, surplus is iron Fe.
35. quasi-bainite steel according to claim 34 is characterized in that: also contain chromium Cr 0.25～2.80, surplus is iron Fe.
36. quasi-bainite steel according to claim 35 is characterized in that: also contain nickel 0.50～1.50, surplus is iron Fe.
37. a quasi-bainite steel is characterized in that: with the weight percent is unit, contains carbon C 0.09～1.20, manganese Mn 0.80～3.20, and silicon Si 0.90～2.50, tungsten W 0.30～1.20, surplus is iron Fe.
38. according to the described quasi-bainite steel of claim 37, it is characterized in that: also contain chromium Cr 0.25～2.80, surplus is iron Fe.
39. according to the described quasi-bainite steel of claim 38, it is characterized in that: also contain nickel 0.50～1.50, surplus is iron Fe.
40. a quasi-bainite steel is characterized in that: with the weight percent is unit, contains carbon C 0.09～1.20, manganese Mn 0.80～3.20, and aluminium Al 0.80～2.50, tungsten W 0.30～1.20, surplus is iron Fe.
41. according to the described quasi-bainite steel of claim 40, it is characterized in that: also contain chromium Cr 0.25～2.80, surplus is iron Fe.
42. according to the described quasi-bainite steel of claim 41, it is characterized in that: also contain nickel 0.50～1.50, surplus is iron Fe.
43. a quasi-bainite steel is characterized in that: with the weight percent is unit, contains carbon C 0.09～1.20, manganese Mn 0.80～3.20, and silicon Si 0.25～1.50, aluminium Al 0.50～1.10, tungsten W 0.30～1.20, surplus is iron Fe.
44. according to the described quasi-bainite steel of claim 43, it is characterized in that: also contain chromium Cr 0.25～2.80, surplus is iron Fe.
45. according to the described quasi-bainite steel of claim 44, it is characterized in that: also contain nickel 0.50～1.50, surplus is iron Fe.
46. a quasi-bainite steel is characterized in that: with the weight percent is unit, contains carbon C 0.09～1.20, manganese Mn 0.80～3.20, and silicon Si 0.25～1.50, boron 0.002～0.005, tungsten W 0.30～1.20, surplus is iron Fe.
47. according to the described quasi-bainite steel of claim 46, it is characterized in that: also contain chromium Cr 0.25～2.80, surplus is iron Fe.
48. according to the described quasi-bainite steel of claim 47, it is characterized in that: also contain nickel 0.50～1.50, surplus is iron Fe.
49. a quasi-bainite steel is characterized in that: with the weight percent is unit, contains carbon C 0.09～1.20, manganese Mn 0.80～3.20, and aluminium Al 0.50～1.10, boron 0.002～0.005, tungsten W 0.30～1.20, surplus is iron Fe.
50. according to the described quasi-bainite steel of claim 49, it is characterized in that: also contain chromium Cr 0.25～2.80, surplus is iron Fe.
51. according to the described quasi-bainite steel of claim 50, it is characterized in that: also contain nickel 0.50～1.50, surplus is iron Fe.
52. a quasi-bainite steel is characterized in that: with the weight percent is unit, contains carbon C 0.09～1.20, manganese Mn 0.80～3.20, and silicon Si 0.25～1.50, aluminium Al 0.50～1.10, boron 0.002～0.005, tungsten W 0.30～1.20, surplus is iron Fe.
53. according to the described quasi-bainite steel of claim 52, it is characterized in that: also contain chromium Cr 0.25～2.80, surplus is iron Fe.
54. according to the described quasi-bainite steel of claim 53, it is characterized in that: also contain nickel 0.50～1.50, surplus is iron Fe.
55. the smelting process of the described quasi-bainite steel of arbitrary claim in the claim 1～54, adopt electric furnace or converter+stove to carry out refining outward, it is characterized in that: the gas content of control molten steel is in refining process: nitrogen N 2≤80PPm, hydrogen H2≤4PPm, oxygen O2≤25PPm.
56. the heat treating method of the described quasi-bainite steel of arbitrary claim in the claim 1～54 is characterized in that: heat treating method adopts 910 ℃～950 ℃ quenchings or air cooling or oil cooling+200 ℃～450 ℃ of low-temperaturetempering water-cooleds.
57. the application of the described quasi-bainite steel of arbitrary claim on railroad bridge, railway bridge shape splice bar, profile material, welding assembly, hoisting machinery, construction(al)steel, high intensity standard part in the claim 4～6.
58. in the claim 7～9 the described quasi-bainite steel of arbitrary claim at railway heavy rail, high strength linepipe, carburized parts with the application on the steel.
59. the application of the described quasi-bainite steel of arbitrary claim on railway switch, abrasion-proof structure, wear-resistant cast steel parts in the claim 10～12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100175242A CN100387746C (en) | 2005-04-18 | 2005-04-18 | Quasi bainitic steel and its application in rail way industry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100175242A CN100387746C (en) | 2005-04-18 | 2005-04-18 | Quasi bainitic steel and its application in rail way industry |
Related Child Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007103005897A Division CN101220441A (en) | 2005-04-18 | 2005-04-18 | Meta-bainite steel and application of the same in railway industry |
| CNA2007101083957A Division CN101126141A (en) | 2005-04-18 | 2005-04-18 | Meta-bainite steel and application of the same in railway |
| CNB2007101083904A Division CN100523262C (en) | 2005-04-18 | 2005-04-18 | Meta-bainite steel and application of the same in railway |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1693521A true CN1693521A (en) | 2005-11-09 |
| CN100387746C CN100387746C (en) | 2008-05-14 |
Family
ID=35352644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100175242A Expired - Fee Related CN100387746C (en) | 2005-04-18 | 2005-04-18 | Quasi bainitic steel and its application in rail way industry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100387746C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101624681B (en) * | 2009-08-11 | 2011-06-01 | 武汉科技大学 | Ultra-high strength bainite armour steel and manufacturing method thereof |
| CN102931783A (en) * | 2012-09-28 | 2013-02-13 | 莱芜美澳冶金科技有限公司 | High-magnetic permeability thick composite induction plate and manufacturing method for same |
| CN106636923A (en) * | 2016-12-30 | 2017-05-10 | 天津威尔朗科技有限公司 | Drill rod and preparation method thereof |
| CN108754306A (en) * | 2018-05-24 | 2018-11-06 | 江苏大学 | A kind of high-intensity and high-tenacity antifriction alloy and preparation method thereof |
| CN111101078A (en) * | 2019-12-18 | 2020-05-05 | 河北中科智源新材料技术有限公司 | Nickel-free high-strength mining circular chain steel and production method thereof |
| CN111676425A (en) * | 2020-08-12 | 2020-09-18 | 宝武集团鄂城钢铁有限公司 | Bridge steel with excellent toughness and strong fatigue property at extreme low temperature and manufacturing method thereof |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1036231A (en) * | 1989-01-18 | 1989-10-11 | 西北工业大学 | Bainite steel of high strength and tenacity |
| CN1034287C (en) * | 1993-05-29 | 1997-03-19 | 西安工业学院 | Air-cooled bainite steel with high toughness and high quenching performance |
| CN1103674A (en) * | 1993-12-06 | 1995-06-14 | 辽宁工学院 | Air-cooled transformed bainite anti-wear material for ball mill and its processing technology |
| GB2297094B (en) * | 1995-01-20 | 1998-09-23 | British Steel Plc | Improvements in and relating to Carbide-Free Bainitic Steels |
| CN1172171A (en) * | 1995-08-24 | 1998-02-04 | 康沫狂 | Quasi-bainitic steel |
| CN1150978A (en) * | 1995-11-17 | 1997-06-04 | 管小丁 | Quasi-bainite steel cutter teeth and its heat-treatment method |
| CN1166804C (en) * | 1998-12-07 | 2004-09-15 | 清华大学 | High-strength and high-toughness weldable air-cooled Hongkang bainite steel specially for railway frog |
| CN1508277A (en) * | 2002-12-20 | 2004-06-30 | 宝钢集团上海梅山有限公司 | Cutting edge plate high-abrasive material |
| CN1247810C (en) * | 2002-12-24 | 2006-03-29 | 鞍钢新轧钢股份有限公司 | Wearproof and rough quasi bainite rails and their production |
| CN1194113C (en) * | 2003-04-30 | 2005-03-23 | 清华大学 | Mn-Si-Cr air-cooled granular bainite/ferrite polyphase Steel |
| CN1242087C (en) * | 2004-01-18 | 2006-02-15 | 江苏省机电研究所有限公司 | High hardness high ductility wear-resistant steel |
-
2005
- 2005-04-18 CN CNB2005100175242A patent/CN100387746C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101624681B (en) * | 2009-08-11 | 2011-06-01 | 武汉科技大学 | Ultra-high strength bainite armour steel and manufacturing method thereof |
| CN102931783A (en) * | 2012-09-28 | 2013-02-13 | 莱芜美澳冶金科技有限公司 | High-magnetic permeability thick composite induction plate and manufacturing method for same |
| CN106636923A (en) * | 2016-12-30 | 2017-05-10 | 天津威尔朗科技有限公司 | Drill rod and preparation method thereof |
| CN108754306A (en) * | 2018-05-24 | 2018-11-06 | 江苏大学 | A kind of high-intensity and high-tenacity antifriction alloy and preparation method thereof |
| CN108754306B (en) * | 2018-05-24 | 2020-06-09 | 江苏大学 | High-strength high-toughness wear-resistant alloy and preparation method thereof |
| CN111101078A (en) * | 2019-12-18 | 2020-05-05 | 河北中科智源新材料技术有限公司 | Nickel-free high-strength mining circular chain steel and production method thereof |
| CN111676425A (en) * | 2020-08-12 | 2020-09-18 | 宝武集团鄂城钢铁有限公司 | Bridge steel with excellent toughness and strong fatigue property at extreme low temperature and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100387746C (en) | 2008-05-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1086743C (en) | Bainite type rail excellent in surface fatigue damage resistance and wear resistance | |
| US9816165B2 (en) | Ultrahigh-strength, high-toughness, wear-resistant steel plate and manufacturing method thereof | |
| EP2881486B1 (en) | Abrasion resistant steel plate with high strength and high toughness, and process for preparing same | |
| CN105369130B (en) | Multielement alloying high-strength high-abrasion-resistance steel and manufacturing method of hot-rolled plate | |
| CN107923022B (en) | Martensitic stain less steel | |
| CN1793403A (en) | Pealite like thermal treating steel rail and producing method thereof | |
| CN1793402A (en) | Pearlite like high strength low alloy rail steel and producing method thereof | |
| CN102041458A (en) | Low-alloy abrasion-resistant steel and manufacturing method thereof | |
| JPWO2017104719A1 (en) | How to select rail steel and wheel steel | |
| CN110607488A (en) | Online heat treatment steel rail for high-speed railway and manufacturing method thereof | |
| CN1626695A (en) | Easy cut by flame abrasion-resistant steel in high rigidity, in toughness and preparation method | |
| CN1693521A (en) | Quasi bainitic steel and its application in rail way industry | |
| CN101250673A (en) | Ultrahigh strength abrasion resistant steel and method of preparing the same | |
| JP2009001910A (en) | High-hardness, high-toughness steel | |
| CN1128245C (en) | High-strength alloyed cast steel with high resistance to wear and impact and its preparing process | |
| CN111593258A (en) | High-wear-resistance high-strength-toughness bainite-martensite multiphase structure steel rail for curve and manufacturing method thereof | |
| CN1166803C (en) | High vanadium high-wear-resistant alloy and its preparation method | |
| CN100523262C (en) | Meta-bainite steel and application of the same in railway | |
| CN110106451B (en) | High-silicon medium-carbon wear-resistant cast steel and heat treatment method thereof | |
| US10113219B2 (en) | Nano-pearlite rail and process for manufacturing same | |
| CN115369319B (en) | Weldable high-strength high-toughness wear-resistant material and heat treatment process thereof | |
| CN100408712C (en) | Quasi bainitic steel | |
| JP2007169727A (en) | High-strength pearlitic rail, and its manufacturing method | |
| CN101220441A (en) | Meta-bainite steel and application of the same in railway industry | |
| CN101126141A (en) | Meta-bainite steel and application of the same in railway |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080514 Termination date: 20170418 |