CN103045969A - Coating-free corrosion-resistant steel - Google Patents
Coating-free corrosion-resistant steel Download PDFInfo
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Abstract
The invention provides corrosion-resistant steel which can be applied to a tanker cargo oil tank, an industrial boiler tube, a chemical raw material tank and other high-sulfur and high-acidity environments in a coating-free state. The coating-free corrosion-resistant steel can reduce hole corrosion in the cargo oil tank and comprehensive acid corrosion at a deck or a side plate, and can also be recommended or expanded to structure construction of an oil storage tank, an oil platform, a cargo tanker and an oil pipeline system. The coating-free corrosion-resistant steel comprises thick steel plates, thin steel plates, structural steel and other types, and comprises 0.003-0.07wt% of C, 0.001-0.3wt% of Si, 0.1-1.3wt% of Mn, less than 0.025wt% of P, 0.015-0.035wt% of Al, not more than 0.008wt% of N, 0.15-0.30wt% of Cu, 0.08-0.25wt% of Sb, 0.007-0.025wt% of S and the balance of Fe and unavoidable impurities, without Ni/Cr/Mo/Sn/W and other expensive alloy elements. A compound with the corrosion resistance based on Cu-S-Sb is low in cost and can be exposed for use in complex corrosive environments for crude oil transportation and in the high-sulfur and high-acidity environments.
Description
Technical field
The present invention relates to a kind of corrosion-resistant steel of exempting from application, these steel can reduce pitting and deck or comprehensive acid corrosion of side plate place generation and the acid corrosion under the high acid environment of high-sulfur that occurs in the oil cargo tank, these steel comprise the types such as Plate Steel, steel sheet and shaped steel, and are suitable for modern cold and hot working and weldprocedure operation.
Background technology
In recent years, along with the continuous progress of China's economy, various boilers, tobacco, chemical industry transportation equipment constantly increase, and the performance of required steel is also more and more higher.In order to improve the work-ing life of steel, the extension device life cycle improves equipment dependability, and the steel of manufacturing need to have high acid corrosion-resistant and sulfur corrosion resistant performance.
Because the corrosive environment of crude oil carrier is relatively harsh in various corrosive environments, therefore illustrate the demand of these type of steel extremely urgent as an example of crude oil carrier example.
Petroleum demand was increasing in recent years, and the fuel feeding ratio of marine oil field increases increasingly, and the Imported oil degree of dependence is also more and more stronger.Domestic Crude oil from CNOOC output had reached 5,000 ten thousand tons in 2010, approximately 200,000,000 tons of imported crude oils, and 90% relies on Oil Carrier Transportation, so the strategic position of offshore oil transportation becomes more and more important.What existing oil carrier and oil cargo tank major part were used is A/D/EH32, A/D/EH36 level ship steel, can satisfy the requirement of intensity, toughness and welding property in construction and the use procedure.But because the diversity of oil composition and the complicacy and the underway various sea situations of oil carrier that contain multiple acidic corrosive media and shipbuilding technology, the oil cargo tank that employing conventional ship slab is built is seriously corroded often, so that the life-span of oil carrier shortens greatly, directly threaten the safety of carried of crude oil.
In order to improve the corrosion resistance nature of oil carrier oil cargo tank, suppressing to corrode effective means is to carry out primer painting, metal spraying at steel surface, and steel and corrosive environment are isolated, and in addition, makes regular check on the local corrosion degree that repairing also can reduce oil cargo tank.But from the actual protection of oil carrier oil cargo tank, the surface covered of oil cargo tank is huge, and approximately just needs again coating once in 5 ~ 10 years, and therefore within oil carrier phase life, the construction cost of oil cargo tank being implemented Coating and deck of boat replacing is high.In addition, work condition environment is relatively poor in the oil cargo tank, and construction space is narrow, and regular repairing is sprayed paint and also is difficult to guarantee the quality of whole oil cargo tank internal surface, and microscopic defect and the defective of year of a specified duration deteriorated generation of local corrosion during often take construction expanded as starting point.Therefore, the urgent ship steel of wishing to develop the excellent corrosion resistance that is highly resistant to oil cargo tank Special Corrosion medium.Development and the corrosion-resistant deck of boat of exploitation oil cargo tank can reduce construction, maintenance intervals and the cost of oil cargo tank, can increase substantially safety in utilization and the reliability of oil cargo tank simultaneously.
At present, Nippon Steel Corporation (Nippon Steel, JFE, Sumitomo Metal Industries) has had relative proven technique, has developed the COT anti-corrosion steel plate, but each thinking difference briefly is introduced at this.
(1) Nippon Steel
Nippon Steel releases the earliest and need not the oil carrier corrosion-resisting steel NSGP-1 that coating is processed, and VLCC peak number (Takamine) lower shoe that Mitsubishi Heavy Industries Ltd build in June, 2004 adopts.Nippon Steel has applied for multinomial patent to this, more representational have JP 2005-023421 and a JP 2010-043342.JP 2005-023421 mainly adds Cu(0.01 ~ 1.5%), W/Mo(is at least a), limit simultaneously Cr content≤0.1%, and control simultaneously S, P content.And JP 2010-043342 is at least a at the basis of above-mentioned patent interpolation Ni/Co() metal.
（2）JFE
2002 Co., Ltd. Mitsui merchantman (MOL) announce to build in 2003 the NAC5 corrosion-resisting steel that up-to-date oil cargo tank upperdeck will adopt JFE to develop, but with the effects on surface processing of painting.The representational patent of JFE application has JP 2007-063610, JP 2007-291494, WO201008750 and WO2010074307.Main non-corrosive metal element W(0.001 ~ 0.5% that adds among the open patent 2007-063610).And open patent 2007-291494 mainly adds W(0.0001 ~ 0.5) and Cr(0.06 ~ 0.2%) two kinds of non-corrosive metals.Add non-corrosive metal Cu(0.008 ~ 0.35% among the patent WO2010074307), Cr(0.1 ~ 0.5) and Sn(0.005 ~ 0.3).Patent WO2010074307 has then enlarged patent WO2010087509 alloying element scope, adds Cr(0.1 ~ 0.5), Cu(0.03 ~ 0.5) and W/Mo/Sn/Sb/Ni/Co at least a.
(3) Sumitomo Metal Industries
Sumitomo Metal Industries apply for a patent disclosed composition and mainly add non-corrosive metal element Ni, Cu and elements such as w, and restriction Cr(≤0.1%), control S, P content.For example add Ni(0.01 ~ 3% in the JP 2003-082435 patent) and Cu(0.01 ~ 2%), JP 2005-325439 on the basis of JP 2003-082435 and added W(0.01 ~ 1%), and Ni, Cu and W content will satisfy relational expression (1) and (2).JP 2006-137963 is extend range more, thinks that Mo is similar with the W effect, except Ni and Cu, can also select at least a in two kinds of elements of Mo and W, and require Ni, Cu, W and Mo should satisfy relational expression (3) and (4).JP 2007-270196 also adds Sn(0.01 ~ 0.2% except adding non-corrosive metal element Ni and Cu).
(1-0.691×Cu)×(1-0.221×Ni)×(1-0.142×W)≤0.75 (1)
(1-0.444×Cu)×(1-0.156×Ni)×(1-0.63×W)≤0.80 (2)
(1-0.691×Cu)×(1-0.221×Ni)×(1-0.142×W)×(1-0.148×Mo)≤0.75 (3)
(1-0.444×Cu)×(1-0.156×Ni)×(1-0.63×W)×(1-0.178×Mo)≤0.80 (4)
From open source literature, three Iron And Steel Company's corrosion-resisting steel performances are all relatively good, and Nippon Steel's corrosion-resisting steel simulative corrosion test data are maximum, but mainly concentrate on lower shoe, and the test of lower shoe analog simulation and International Maritime Organizaton's recommend method basic simlarity.The open upper and lower base plate simulative corrosion test of the part data of Sumitomo company, analog simulation test and International Maritime Organizaton's recommend method of upperdeck are consistent, and lower shoe is difference then.JFE discloses the corrosion simulation data after the corrosion-resisting steel coating, finds the exposed corrosion-resistant steel testing data of using, and analog simulation test and International Maritime Organizaton's recommend method of upperdeck are consistent, and lower shoe is difference then.
Aspect real ship construction, the NSGP-1 corrosion-resisting steel of Nippon Steel has been applied in the lower shoe on VLCC peak number, and do not carry out coating and process, the JFE-SIPTM-OT of JFE development also has been used for real ship construction and has not carried out coating and process, and Sumitomo Metal Industries' corrosion-resisting steel yet there are no the report that real ship is used.
Summary of the invention
In order to address the above problem, the invention provides a kind of corrosion-resistant steel, the chemical composition of described corrosion-resistant steel is: C:0.003 ~ 0.07wt%, Si:0.001 ~ 0.3wt%, Mn:0.1 ~ 1.3wt%, below the P:0.025wt%, Al:0.015 ~ 0.035wt%, N: be not more than 0.008wt%, Cu:0.15 ~ 0.30wt%, Sb:0.08 ~ 0.25wt%, S:0.007 ~ 0.025wt%, surplus is Fe and inevitable impurity.Do not add expensive W, Cr, other corrosion-resistant elements such as Ni, Mo according to corrosion-resistant steel of the present invention.
Preferably, described corrosion-resistant steel also comprises at least a among Ca:0.002 ~ 0.005wt% and the REM:0.0002 ~ 0.010wt%.
Preferably, described corrosion-resistant steel also comprises Nb:0.01 ~ 0.06wt%; Few a kind of among Ti:0.005 ~ 0.03wt% and the B:0.0005 ~ 0.002wt%.
Corrosion-resistant steel according to the present invention has good erosion resistance, can be used for the oil carrier oil cargo tank.In addition, steel of the present invention can also exempt under the painting state to be used for the high-sulfur peracid environment such as Industrial Boiler pipeline, industrial chemicals tank, also can recommend or broadened application in the structure building of storage tank, production vessel, shipping tank car and controlling methodology of oil pipeline.
Description of drawings
Fig. 1 is the schematic diagram that the cross section of crude oil tank is shown.
Fig. 2 is the schematic diagram of growing up that pitting corrosion is shown.
Fig. 3 illustrates the schematic diagram that carries out comprehensive accelerated corrosion test according to 1 pair of steel of the embodiment of the invention.
Fig. 4 illustrates according to 1 pair of steel of the embodiment of the invention to carry out the photo that obtains after comprehensive accelerated corrosion test.
Fig. 5 illustrates the schematic diagram that carries out local accelerated corrosion test according to 2 pairs of steel of the embodiment of the invention.
Fig. 6 illustrates according to 2 pairs of steel of the embodiment of the invention to carry out the photo that obtains after the local accelerated corrosion test.
Embodiment
Fig. 1 is the schematic diagram of the cross section of crude oil tank.Pile up the mud that contains iron rust on the backplate surface of oil tanker crude oil tank, be detained the high density salt solution from crude separation thereon.Have in the crude oil tank for explosion-proof and rare gas element that import in the crude oil (for example, contains CO
2: 13 volume %, O
2: 5 volume %, SO
2: 0.01 volume % etc.) and the H that occurs from crude oil
2S gas is very severe corrosive environment.
The oil film that covers the crude oil heavy ingredient of base plate has non-corrosibility, but because the accumulation of mud and the crude oil washing/COW of regularly carrying out if the part of oil film comes off, then form the low exposed part of protectiveness, thereby pitting corrosion occurs at this position.In saltwater environment, the oil film defect part becomes the anode of locality, and mud and sound oil film become negative electrode, form the galvanic corrosion system, and pitting corrosion is grown up.
The factual survey result shows: the solids component in the mud in containing crude oil, also piling up the materials such as the iron rust that generates and sulphur in unrefined oil tank.It is that 0.85～4(is lower than outside pH4～8 that the pitting corrosion inside of base plate exists pH) chloride soln.Because the existence of low pH solution has promoted the hydrogen of cathodic reaction to react, so promoted corrosion.
Therefore; but the mechanism of corrosion brief overview of COT base plate is: the COT bottom exists the corrosion necessary moisture of electrochemical reaction (salt solution of high density); but formed the tectum with the oil reservoir that cuts off environmental activity on the backplate surface, steel plate has obtained protection from corrosive environment.But owing to some reasons, oil reservoir locality damage under the effect of the chloride soln that enters monomer S the crude oil or low pH from the locality damage, has been accelerated the steel plate local corrosion, and then has been reached pitting corrosion.
When containing the S(that there is capacity in the Cu steel＞0.007wt%), can significantly improve the corrosion resistance nature of steel, former because at steel surface Precipitation Cu
2The S overlay film; The corrosion resistance nature of steel can significantly be provided when Cu and Sb coexistence, and reason is for having generated Cu
2The Sb overlay film.
Consider the complicacy of oil cargo tank corrosive environment, the present invention carries out two kinds of Corrosion Resistant Mechanisms compound, namely adopt the compound mode of Cu-S-Sb that steel grade is carried out Composition Design, do not add other corrosion-resistant element (such as W, Cr, Ni, Mo, Sn etc.), and S is treated as beneficial element.
Namely, the invention provides a kind of economical oil carrier corrosion resistant steel for cargo oil tanks material that exposes use, it contains C:0.003 ~ 0.07wt%, Si:0.001 ~ 0.3wt%, Mn:0.1 ~ 1.3wt%, below the P:0.025wt%, Al:0.015 ~ 0.035wt%, N: be not more than 0.008wt%, Cu:0.15 ~ 0.30wt%, Sb:0.08 ~ 0.25wt%, S:0.007 ~ 0.025wt%, surplus is Fe and inevitable impurity.Corrosion-resistant steel of the present invention does not add expensive W, Cr, other corrosion-resistant elements such as Ni, Mo.
In addition, steel of the present invention can also comprise at least a among Ca:0.002 ~ 0.005wt% and the REM:0.0002 ~ 0.010wt%.
Replacedly, consider needs that intensity improves and the needs of Large Heat Input Welding, steel of the present invention can also comprise at least a among Nb:0.01 ~ 0.06wt%, Ti:0.005 ~ 0.03wt% and the B:0.0005 ~ 0.003wt%.
According to corrosion-resistant steel of the present invention, even under the complex environment of carried of crude oil, still can expose use, and cost economy, can obviously reduce maintenance cost and work-ing life and the safe reliability of oil carrier.
Can comprise simultaneously at least a among at least a and Nb:0.01 ~ 0.06wt%, Ti:0.005 ~ 0.03wt% among Ca:0.002 ~ 0.005wt% and the REM:0.0002 ~ 0.010wt% and the B:0.0005 ~ 0.003wt% according to corrosion-resistant steel of the present invention.
Composition Design foundation according to corrosion-resistant steel of the present invention is as follows:
C：0.003~0.07wt%。Carbon is the element that improves the intensity of steel, in the present invention, be equivalent to the level of DH32/DH36 for armor plate strength is reached, need to contain the above carbon of 0.003wt%, if but containing above 0.16wt%C, the toughness of weldability and welded heat affecting zone can reduce (requiring Ceq≤0.38).Therefore, consider the obdurability matching properties, preferred 0.003 ~ 0.07wt%C scope.
Si：0.001~0.3wt%。Si adds as reductor usually, improves simultaneously the intensity of steel, needs to contain 0.01wt%Si among the present invention, if but addition surpasses 0.5wt%, then can make the steel plate toughness drop.In addition, Si forms corrosion-resistant overlay film under sour environment, thereby improves the effect of erosion resistance.In order to obtain this effect, preferred 0.10 ~ 0.25wt% scope.
Mn：0.1~1.3wt%。Mn can improve steel strength, the intensity in order to obtain expecting among the present invention, and needs add the Mn of 0.8 ~ 1.1wt%, if but add excessive Mn, carbon equivalent is increased, reduce toughness and the weldability of steel, therefore, preferred 0.8 ~ 1.1wt%Mn.
Below the P:0.025wt%.The segregation of P on crystal boundary can make the toughness drop of steel, so make it to reduce as much as possible, particularly P content surpasses 0.025wt% in the steel, toughness is significantly descended, if but reduction P content can make again cost rise less than the 0.005wt% scope, and therefore preferred P content is at 0.008 ~ 0.015wt%.
Al：0.015~0.035wt%。Al is the element that adds as reductor in the steel, greater than 0.05wt% strand ductility is reduced, therefore preferred 0.015 ~ 0.035wt%.
N：≤0.008wt%。The N constituent content is too high in the steel, can cause embrittlement of grain boundaries, affects the steel impact property, therefore for guaranteeing product performance, preferred N≤0.008wt%.
Cu：0.15~0.30wt%。Cu is containing H
2Help to improve comprehensive erosion resistance in the environment of S, but limited to improving anti-local corrosion effect, and add Cu and can cause hot workability significantly to reduce, therefore add in the present invention Cu, but limit its content at 0.15 ~ 0.30wt%
Sb：0.08~0.25wt%。Sb can form Cu by compound with Cu and S
2S overlay film, Cu
2Sb and Cu
3Sb
2Overlay film can improve erosion resistance so comprehensively.Interpolation can not obtain above-mentioned effect less than 0.07wt%, and is saturated if interpolation surpasses the above-mentioned effect of 0.30wt%, and processibility is reduced, and the interpolation scope of therefore preferred Sb is 0.08 ~ 0.25wt%
S：0.007~0.025wt%。It is generally acknowledged that S can form MnS with Mn, can become the initial zone that occurs of corrosion, affect the corrosion resistance nature of steel plate, but among the present invention, S and Cu are compound can to form Cu
2The S overlay film, the erosion resistance of raising steel plate, therefore preferred S content is 0.007 ~ 0.025wt%.
Ca:0.002 ~ 0.005wt% or REM:0.0002 ~ 0.010wt%.Ca and REM have the effect of control inclusion morphology, thereby improve steel ductility and toughness.If Ca content is less than 0.002wt%, DeGrain, if but surpass 0.005wt%Ca, then the solubleness in this steel grade reaches capacity, and therefore adds the preferred 0.002 ~ 0.005wt% of Ca or REM:0.0002 ~ 0.010wt%.
Nb：0.01~0.06wt%。Nb is the element that adds for the intensity that improves steel, if less than 0.01wt% its DeGrain then, on the other hand, if greater than 0.1wt% toughness drop then, therefore, the content of preferred Nb is at 0.02 ~ 0.06wt%.
Ti：0.005~0.03wt%。Ti is the element that adds for the intensity that improves steel and toughness, if less than the above-mentioned DeGrain of 0.005wt%, if then can generate the inclusion of many Ti greater than 0.05wt%, affects steel performance, and therefore the preferred Ti content that adds is at 0.015 ~ 0.03wt%.
B：0.0005~0.003wt%。B is the element that adds for the intensity that improves steel, develops the strength range of steel in view of the present invention, and if add B ultrasonic and cross 0.01wt%, then therefore toughness drop adds the B preferred content at 0.0005 ~ 0.003wt%.
The below provides specific embodiments of the invention.Composition of steel in the table 1 below adopting is smelted into steel with it in vacuum induction furnace, do not add the expensive metal such as W, Cr, Ni, Mo, Sn, to reduce production costs.Molten steel is heated to 1180 ℃ after watering into and being cooled to normal temperature behind the ingot casting, and subsequent hot, finish to gauge end temp are 830 ℃, and final finished thickness is 7mm.
Table 1 smelting molten steel chemical composition, wt%
| Numbering | C | Si | Mn | P | Al | S | Cu | Sb | Ti | Ca | Nb | B | REM |
| 1 | 0.003 | 0.1378 | 0.1491 | 0.0043 | 0.01 | 0.0079 | 0.26 | 0.221 | 0.0114 | 0.0027 | 0 | 0 | 0 |
| 2 | 0.032 | 0.3965 | 0.9201 | 0.0077 | 0.0206 | 0.0073 | 0.30 | 0.134 | 0.023 | 0.003 | 0 | 0.0029 | 0.0008 |
| 3 | 0.045 | 0.052 | 0.8744 | 0.0061 | 0.0303 | 0.0026 | 0.30 | 0.121 | 0 | 0.0028 | 0.01 | 0.0023 | 0.0056 |
| 4 | 0.014 | 0.2394 | 0.9664 | 0.0069 | 0.0348 | 0.0105 | 0.30 | 0.126 | 0.0138 | 0.0029 | 0.025 | 0 | 0 |
| 5 | 0.062 | 0.234 | 1.122 | 0.0060 | 0.0350 | 0.0181 | 0.19 | 0.101 | 0 | 0 | 0 | 0 | 0 |
| 6 | 0.025 | 0.1891 | 1.168 | 0.0036 | 0.0289 | 0.0231 | 0.16 | 0.120 | 0 | 0.0038 | 0 | 0.0020 | 0 |
Steel band after the hot rolling intercepts the square lab scale print of 25mm * 60mm * 5mm, and surface working smooth finish is
After effects on surface carries out the de-oiling skimming treatment, consider the complicacy of crude oil corrosive environment, carried out respectively the exposed accelerated corrosion test of steel plate of high temperature and low temperature, to investigate respectively comprehensive and local corrosion resistance nature.
Comprehensive accelerated corrosion test in 160 ℃ of 40wt% sulfuric acid of embodiment 5wt% sulphur solution
Coupons put into 60 ℃ 40wt% sulphuric acid soln, add the analytical pure sulphur of solution quality percentage ratio 5wt%, thermostat container is put in the Thoughs sealing, as shown in Figure 3.Take out after 4 hours, dry behind the clean surface resultant, weigh, calculate average corrosion rate, test-results is shown in Table 2, and pattern is seen Fig. 4 after the corrosion, and wherein, (a) among Fig. 4 is the photo of contrast sample, and (b) among Fig. 4 is the photo according to sample 2 of the present invention.
Comprehensive accelerated corrosion test result in 60 ℃ of 40wt% sulfuric acid of table 2
| Numbering | Average corrosion rate, g/m 2·h | The contrast sample | Average corrosion rate, g/m 2·h | Relative corrosion rate, wt% |
| 1 | 22.93 | E36 | 994.1 | 2.31% |
| 2 | 61.53 | E36 | 2044.4 | 3.01% |
| 3 | 67.19 | E36 | 2347 | 2.86% |
| 4 | 389.5 | E36 | 2035.9 | 19.13% |
| 5 | 35.68 | E36 | 1998.4 | 1.79% |
| 6 | 42.87 | E36 | 2231.4 | 1.92% |
As known from Table 2, steel of the present invention illustrate steel of the present invention comprehensive excellent anti-corrosion performance under exposed service condition in the situation that exposed the use is very low with the relative corrosion rate of E36.
Local accelerated corrosion test in 23 ℃ of 40wt% sulfuric acid of embodiment 2 normal temperature sulphur solution
Sealed with wax in the coupons surface of above-mentioned machine-shaping, dig out the circular hole of diameter 5mm on its surface, insert therein analytical pure sulphur, be placed in the 40wt% sulfuric acid of 23 ℃ of normal temperature, as shown in Figure 5.Take out sample after 72 hours, dry after surface cleaning is clean, weigh, measure its average corrosion rate.Test-results sees Table 3, and the sample pattern is seen Fig. 6 after the corrosion.Wherein, (a) among Fig. 6 is the photo of contrast sample, and (b) among Fig. 6 is the photo according to sample 3 of the present invention.
The local accelerated corrosion result of table 3 normal temperature
| Numbering | Average corrosion rate, g/m 2·h | The contrast sample | Average corrosion rate, g/m 2·h | Relative corrosion rate, wt% |
| 1 | 29.93 | E36 | 294.15 | 10.18% |
| 2 | 26.52 | E36 | 274.22 | 9.67% |
| 3 | 32.2 | E36 | 251.97 | 12.78% |
| 4 | 35.32 | E36 | 283.71 | 12.45% |
| 5 | 42.46 | E36 | 285.32 | 14.88% |
| 6 | 34.64 | E36 | 264.62 | 13.09% |
Can find out from two test-results of the present invention, no matter be in high-temperature condition or normal temperature situation, the corrosion resistance nature of anti-general corrosion and local corrosion is all very good under the exposed service condition of steel of the present invention, can satisfy the requirement of the anti-pitting generation of oil carrier oil cargo tank base plate and deck or the anti-comprehensive acid corrosion of side plate under the working condition, its exposed chemical industry equipment, Industrial Boiler, tobacco industry etc. of applying to are had under the sulfuric acid dew point corrosion environment and also can have good corrosion resistance nature.
In addition, through test of many times, its result's is repeated fine.
Describe the present invention in detail with reference to specific embodiment, but the invention is not restricted to this.In the situation of the scope that does not break away from claim of the present invention, can carry out modification on various forms and the details to the present invention.
Claims (3)
1. corrosion-resistant steel of exempting from application, it is characterized in that: described corrosion-resistant steel contains C:0.003～0.07wt%, Si:0.001～0.3wt%, Mn:0.1～1.3wt%, below the P:0.025wt%, Al:0.015～0.035wt%, N: be not more than 0.008wt%, Cu:0.15～0.30wt%, Sb:0.08～0.25wt%, S:0.007～0.025wt%, surplus is Fe and inevitable impurity.
2. corrosion-resistant steel as claimed in claim 1 is characterized in that, described corrosion-resistant steel also comprises at least a among Nb:0.01～0.06wt%, Ti:0.005～0.03wt% and the B:0.0005～0.003wt%.
3. corrosion-resistant steel as claimed in claim 1 or 2 is characterized in that, described corrosion-resistant steel also contains at least a among Ca:0.002～0.005wt% and the REM:0.0002～0.010wt%.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101128612A (en) * | 2005-02-28 | 2008-02-20 | 新日本制铁株式会社 | Steel excellent in resistance to sulfuric acid dew point corrosion |
| CN101139683A (en) * | 2007-09-12 | 2008-03-12 | 钢铁研究总院 | Air corrosion resistant steel |
| CN101831598A (en) * | 2010-05-26 | 2010-09-15 | 马鞍山钢铁股份有限公司 | Low alloy steel for resisting sulfuric acid dew point corrosion and production method thereof |
| CN101928886A (en) * | 2010-07-15 | 2010-12-29 | 南京钢铁股份有限公司 | Corrosion resistant steel for cargo oil tanks and application thereof |
| CN102264937A (en) * | 2008-12-24 | 2011-11-30 | 杰富意钢铁株式会社 | Corrosion-resistant steel material for crude oil tanker |
-
2012
- 2012-12-25 CN CN201210569839.8A patent/CN103045969B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101128612A (en) * | 2005-02-28 | 2008-02-20 | 新日本制铁株式会社 | Steel excellent in resistance to sulfuric acid dew point corrosion |
| CN101139683A (en) * | 2007-09-12 | 2008-03-12 | 钢铁研究总院 | Air corrosion resistant steel |
| CN102264937A (en) * | 2008-12-24 | 2011-11-30 | 杰富意钢铁株式会社 | Corrosion-resistant steel material for crude oil tanker |
| CN101831598A (en) * | 2010-05-26 | 2010-09-15 | 马鞍山钢铁股份有限公司 | Low alloy steel for resisting sulfuric acid dew point corrosion and production method thereof |
| CN101928886A (en) * | 2010-07-15 | 2010-12-29 | 南京钢铁股份有限公司 | Corrosion resistant steel for cargo oil tanks and application thereof |
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| CN109628844A (en) * | 2019-02-12 | 2019-04-16 | 鞍钢股份有限公司 | 700MPa grades of transporting coal open-top car corrosion-resisting steels of yield strength and its manufacturing method |
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| CN112647015A (en) * | 2020-11-23 | 2021-04-13 | 首钢集团有限公司 | Coating-free steel for agricultural houses and preparation method thereof |
| CN112647015B (en) * | 2020-11-23 | 2022-04-22 | 首钢集团有限公司 | Coating-free steel for agricultural houses and preparation method thereof |
| CN113025925A (en) * | 2021-03-10 | 2021-06-25 | 安阳钢铁股份有限公司 | Production method of nickel-free steel for resisting sulfuric acid dew point corrosion |
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