CA2666677A1 - Steel and processing method for the manufacture of high strength, fracture-splittable machinery components - Google Patents
Steel and processing method for the manufacture of high strength, fracture-splittable machinery components Download PDFInfo
- Publication number
- CA2666677A1 CA2666677A1 CA002666677A CA2666677A CA2666677A1 CA 2666677 A1 CA2666677 A1 CA 2666677A1 CA 002666677 A CA002666677 A CA 002666677A CA 2666677 A CA2666677 A CA 2666677A CA 2666677 A1 CA2666677 A1 CA 2666677A1
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- CA
- Canada
- Prior art keywords
- accordance
- steel
- fracture
- component
- chemical composition
- 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.)
- Abandoned
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
Abstract
The invention relates to a steel and a processing method for higher-strength fracture-splittable machine components that are composed of at least two fracture-splittable parts. Said steel and method are characterized in that the chemical composition of the steel (expressed in percent by weight) is as follows: 0.40% <= C <= 0.60%; 0.20% <= Si <= 1.00%; 0.50% <= Mn <= 1.50%; 0% <= Cr <= 1.00%; 0% <= Ni <= 0.50%; 0% <= Mo <= 0.20%; 0% <= Nb <= 0.050%; 0% <= V <= 0.30%; 0% <= Al <= 0.05%; 0.005% <= N <= 0.020%, the rest being composed of iron and smelting-related impurities and residual matter.
Description
Georgsmarienhutte GmbH
Neue Huttenstr. 1 D-49124 Georgsmarienhutte Steel and processinq method for the manufacture of high strenqthi, fracture-splittable machirterY components.
The invention concerns a steel and the processing method for the manufacture of high strength, fracture-splittable machinery components. This material was developed, for example, for the manufacture of crack connecting rods.
The steel must be suitabie for forging or for other heat forming processes, The heat used in the forging is dissipated by controlled cooling to produce a largely pearlitic structure that has an apparent limit of elasticity in excess of 750 N/mm2, a tensile strength between 1000 and 1200 N/mmz, elongation to fracture of over 10% and reduction in area at fracture of over 25%. Its fracture-splittability is a particularly important feature.
The desired properties can be obtained by intentionally creating a pearlitic structure with the precipitation of special carbides (niobium and vanadium carbide) and of manganese sulphides by an appropriately formulated chemical composition, controlled temperature management during the heat forming when producing the preliminary material as well as when forging the finished components (thermomechanical treatment), and a suitable heat treatment after completion of the forging or heat forming, as the case may be.
Up to now, examples of the steels used for this purpose are either mostly eutectoid compositions with approximately 0.7% C, 0.5 to 0.9% Mn, 0.06 to 0,07% S and possibly 0.1 to 0.2% V (C70S6, 70MnVS4), or an average carbon content of approximately 0.4%, about 1% Mn, 0,06 to 0.07% S and about 0.3%
V (36MnVS4) according to customers' technical specifications.
Neue Huttenstr. 1 D-49124 Georgsmarienhutte Steel and processinq method for the manufacture of high strenqthi, fracture-splittable machirterY components.
The invention concerns a steel and the processing method for the manufacture of high strength, fracture-splittable machinery components. This material was developed, for example, for the manufacture of crack connecting rods.
The steel must be suitabie for forging or for other heat forming processes, The heat used in the forging is dissipated by controlled cooling to produce a largely pearlitic structure that has an apparent limit of elasticity in excess of 750 N/mm2, a tensile strength between 1000 and 1200 N/mmz, elongation to fracture of over 10% and reduction in area at fracture of over 25%. Its fracture-splittability is a particularly important feature.
The desired properties can be obtained by intentionally creating a pearlitic structure with the precipitation of special carbides (niobium and vanadium carbide) and of manganese sulphides by an appropriately formulated chemical composition, controlled temperature management during the heat forming when producing the preliminary material as well as when forging the finished components (thermomechanical treatment), and a suitable heat treatment after completion of the forging or heat forming, as the case may be.
Up to now, examples of the steels used for this purpose are either mostly eutectoid compositions with approximately 0.7% C, 0.5 to 0.9% Mn, 0.06 to 0,07% S and possibly 0.1 to 0.2% V (C70S6, 70MnVS4), or an average carbon content of approximately 0.4%, about 1% Mn, 0,06 to 0.07% S and about 0.3%
V (36MnVS4) according to customers' technical specifications.
These steels have a predominantly pearlitic structure with vanadium carbides and manganese sufphides and conform to requirements regarding mechanical properties. The drawbacks in the various known material alternatives are that the versions used to this point need considerable resources in terms of expensive and scarce alloying materials. Vanadium in particular is currently used increasingly in the field of precipitation hardening ferritic-pearlitic steels (AFP
steels), making vanadium an increasingly scarce commodity.
The aim of this invention is to avoid the cited disadvantages by proposing a new steel which has the required mechanical properties regarding strength (and fatigue strength) and, additionally, good toughness characteristics in tensile tests, combined at the same time with good splittability. The steel must also be easy to continuously cast and forge. Furthermore, the new steel must use fewer resources when being produced than the known steels by partially substituting the vanadium content with niobium using an appropriately adapted forming and cooling strategy_ The high value for the apparent limit of elasticity is achieved, other than with the basic composition, by the precipitation of extremely finely dispersed carbides of special carbide formers niobium and vanadium, This requires a solution of the present carbides before the final hot forming process as well as controlled temperature management during the hot forming, followed by a final cooling off stage. Finely dispersed precipitation can be achieved, in particular, by having a low final forming temperature, ending with slightly accelerated cooling. This raises the apparent limit of elasticity in particular, thus improving the elastic limit ratio considerably.
The tensile strength value of the basic composition comprising 0.5% C, 0.6%
Si, 1.0% Mn, 0.23% Cr, 0.2% Ni and 0_14% V can be adjusted to the desired level by slightly accelerated cooling after hot forming.
The toughness characteristic values are controlled, in particular, by selective alloying with 0.06 to 0.07% sulphur_ The carbon content and relatively high nitrogen content also act positively in this regard.
steels), making vanadium an increasingly scarce commodity.
The aim of this invention is to avoid the cited disadvantages by proposing a new steel which has the required mechanical properties regarding strength (and fatigue strength) and, additionally, good toughness characteristics in tensile tests, combined at the same time with good splittability. The steel must also be easy to continuously cast and forge. Furthermore, the new steel must use fewer resources when being produced than the known steels by partially substituting the vanadium content with niobium using an appropriately adapted forming and cooling strategy_ The high value for the apparent limit of elasticity is achieved, other than with the basic composition, by the precipitation of extremely finely dispersed carbides of special carbide formers niobium and vanadium, This requires a solution of the present carbides before the final hot forming process as well as controlled temperature management during the hot forming, followed by a final cooling off stage. Finely dispersed precipitation can be achieved, in particular, by having a low final forming temperature, ending with slightly accelerated cooling. This raises the apparent limit of elasticity in particular, thus improving the elastic limit ratio considerably.
The tensile strength value of the basic composition comprising 0.5% C, 0.6%
Si, 1.0% Mn, 0.23% Cr, 0.2% Ni and 0_14% V can be adjusted to the desired level by slightly accelerated cooling after hot forming.
The toughness characteristic values are controlled, in particular, by selective alloying with 0.06 to 0.07% sulphur_ The carbon content and relatively high nitrogen content also act positively in this regard.
A crystalline fracture or macroscopic deformation is essential for the material to split properly. This is achieved by designing the alloy with high contents of carbon, nitrogen and sulphur, and comparatively low contents of chromium, nickel and molybdenum.
According to the solution proposed, the invention concerns a steel for the manufacture of fracture-spiittable components for the vehicle industry with the following chemical composition in percentages by weight:
0.4%<_C50.6%;0.2%5Si<_1.0%;0.5%<_Mn51.5%;0%SCr<_1.0%;
0%5NiS0.5%;0%5Mo50.2%;0%5Nb<0.05%;0%5V:5 0.3%;
0% S Al 5 0.05%; 0.005% 5 N 5 0.020%
whereby the remainder consists of iron and impurities from the melting process.
According to the solution proposed, the invention concerns a steel for the manufacture of fracture-spiittable components for the vehicle industry with the following chemical composition in percentages by weight:
0.4%<_C50.6%;0.2%5Si<_1.0%;0.5%<_Mn51.5%;0%SCr<_1.0%;
0%5NiS0.5%;0%5Mo50.2%;0%5Nb<0.05%;0%5V:5 0.3%;
0% S Al 5 0.05%; 0.005% 5 N 5 0.020%
whereby the remainder consists of iron and impurities from the melting process.
Claims (15)
1. A steel and the processing method for the manufacture of high strength, fracture-splittable machinery components, characterised in that they consist of at least two fracture-splittable parts, characterised in that their chemical composition has the following components in percentages by weight:
0.40% <= C <= 0.60%
0.20% <= Si <= 1.00%
0.50% <= Mn <= 1.50%
0% <= Cr<= 1.00%
0% <= Ni <= 0.50%
0% <= Mo <= 0.20%
0% <= Nb <= 0.050%
0% <= V <= 0.30%
0% <= Al <= 0.05%
0.005% <= N <= 0.020%
whereby the remainder consists of iron and impurities from the melting process and residues.
0.40% <= C <= 0.60%
0.20% <= Si <= 1.00%
0.50% <= Mn <= 1.50%
0% <= Cr<= 1.00%
0% <= Ni <= 0.50%
0% <= Mo <= 0.20%
0% <= Nb <= 0.050%
0% <= V <= 0.30%
0% <= Al <= 0.05%
0.005% <= N <= 0.020%
whereby the remainder consists of iron and impurities from the melting process and residues.
2. A steel in accordance with claim 1, characterised in that its chemical composition is the same except that:
0.10% <= V <= 0.20%
0.10% <= V <= 0.20%
3. A steel in accordance with claim 1 or 2, characterised in that its chemical composition is the same except that:
0.020% <= Nb <= 0.030%
0.020% <= Nb <= 0.030%
4. A steel in accordance one of claims 1 to 3, characterised in that its chemical composition is the same except that:
0.010% <= N <= 0.020%
0.010% <= N <= 0.020%
5. A steel in accordance one of claims 1 to 4, characterised in that its chemical composition is the same except that:
0.45% <= C <= 0.55%
0.50% <= Si <= 0.70%
0.90% <= Mn <= 1.10%
0.10% <= Cr <= 0.40%
0.10% <= Ni <= 0.30%
0.10% <= V <= 0.20%
0.010% <= Al <= 0.020%
0.020% <= Nb <= 0.030%
0.010% <= N <= 0.020%
0.45% <= C <= 0.55%
0.50% <= Si <= 0.70%
0.90% <= Mn <= 1.10%
0.10% <= Cr <= 0.40%
0.10% <= Ni <= 0.30%
0.10% <= V <= 0.20%
0.010% <= Al <= 0.020%
0.020% <= Nb <= 0.030%
0.010% <= N <= 0.020%
6. A steel in accordance one of claims 1 to 4, characterised in that its chemical composition is the same except that:
0.45% <= C <= 0.55%
0.50% <= Si <= 0.70%
0.90% <= Mn <= 1.10%
0.10% <= Cr <= 0.40%
0.10% <= Ni <= 0.30%
0.10% <= V <= 0.20%
0.010% <= Al <= 0.020%
0.020% <= Nb <= 0.030%
0.010% <= N <= 0.020%
0.020% <= Ti <= 0.030%
0.45% <= C <= 0.55%
0.50% <= Si <= 0.70%
0.90% <= Mn <= 1.10%
0.10% <= Cr <= 0.40%
0.10% <= Ni <= 0.30%
0.10% <= V <= 0.20%
0.010% <= Al <= 0.020%
0.020% <= Nb <= 0.030%
0.010% <= N <= 0.020%
0.020% <= Ti <= 0.030%
7. A steel in accordance one of claims 1 to 4, characterised in that its chemical composition is the same except that:
0.45% <= C <= 0.55%
0.50% <= Si <= 0.70%
0.90% <= Mn <= 1.10%
0.30% <= Cr <= 0.40%
0% <= Ni <= 0.20%
0.10% <= V <= 0.20%
0.010% <= Al <= 0.020%
0.020% <= Nb <= 0.030%
0.015% <= N <= 0.020%
0.45% <= C <= 0.55%
0.50% <= Si <= 0.70%
0.90% <= Mn <= 1.10%
0.30% <= Cr <= 0.40%
0% <= Ni <= 0.20%
0.10% <= V <= 0.20%
0.010% <= Al <= 0.020%
0.020% <= Nb <= 0.030%
0.015% <= N <= 0.020%
8. The use of a steel in accordance one of claims 1 to 7 to manufacture fracture-splittable components used in the construction of vehicles, whereby they have a predominantly pearlitic structure from the precipitation of special carbides after forging and controlled cooling.
9. A component in accordance with claim 8, characterised in that the apparent limit of elasticity is over 750 N/mm2 after cooling down from the forming temperature.
10. A component in accordance with claim 9, characterised in that the tensile strength falls between 950 N/mm2 and 1200 N/mm2 after cooling down from the forming temperature.
11. A component in accordance with claim 10, characterised in that the elongation to fracture exceeds 10% after cooling down from the forming temperature.
12. A component in accordance with claim 11, characterised in that the reduction in area at fracture exceeds 25% after cooling down from the forming temperature.
13. A component in accordance with claim 12, characterised in that it is fracture splittable.
14. A component in accordance with claim 13, characterised in that it is suitable for induction hardening.
15. A component in accordance with claim 14, characterised in that the mechanical properties can be adjusted both in the material prior to forging as well as in the component through the use of thermomechanical treatment.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006041146.3 | 2006-09-01 | ||
| DE102006041146A DE102006041146A1 (en) | 2006-09-01 | 2006-09-01 | Steel and processing methods for the manufacture of high-strength fracture-breakable machine components |
| PCT/DE2007/001337 WO2008028447A1 (en) | 2006-09-01 | 2007-07-27 | Steel, and processing method for the production of higher-strength fracture-splittable machine components |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2666677A1 true CA2666677A1 (en) | 2008-03-13 |
Family
ID=38989625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002666677A Abandoned CA2666677A1 (en) | 2006-09-01 | 2007-07-27 | Steel and processing method for the manufacture of high strength, fracture-splittable machinery components |
Country Status (15)
| Country | Link |
|---|---|
| US (1) | US20100186855A1 (en) |
| EP (1) | EP2057298B1 (en) |
| JP (1) | JP2010501733A (en) |
| KR (1) | KR20090049591A (en) |
| CN (1) | CN101542007A (en) |
| AR (1) | AR062184A1 (en) |
| AU (1) | AU2007294317B2 (en) |
| BR (1) | BRPI0716206A2 (en) |
| CA (1) | CA2666677A1 (en) |
| DE (1) | DE102006041146A1 (en) |
| MX (1) | MX2009001971A (en) |
| RU (1) | RU2441093C2 (en) |
| TW (1) | TW200825188A (en) |
| WO (1) | WO2008028447A1 (en) |
| ZA (1) | ZA200900848B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3453777A1 (en) | 2017-09-08 | 2019-03-13 | Cemtas Celk Makina Sanayi Ve Ticaret Anonim Sirketi | High strength and fracture splittable micro alloyed steel |
| WO2021133343A1 (en) | 2019-12-24 | 2021-07-01 | Ti̇rsan Kardan Sanayi̇ Ve Ti̇caret Anoni̇m Şi̇rketi̇ | High strength, low alloy steel composition |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016005615A1 (en) * | 2014-07-08 | 2016-01-14 | Gerdau Investigacion Y Desarrollo Europa, S.A. | Microalloyed steel for heat-forming high-resistance and high-yield-strength parts, and method for producing components made of said steel |
| CN105543651B (en) * | 2015-12-21 | 2017-11-17 | 武钢集团昆明钢铁股份有限公司 | It is a kind of to be used to manufacture hydropower generator rotating shaft, the forging steel molten steel of hinge and its smelting process |
| CN107619995A (en) * | 2017-08-11 | 2018-01-23 | 江阴兴澄特种钢铁有限公司 | A kind of major diameter engineering mechanical hydraulic oil cylinder piston rod round steel and its manufacture method |
| CN108486472A (en) * | 2018-05-11 | 2018-09-04 | 攀钢集团攀枝花钢铁研究院有限公司 | Containing V, Ti, N Micro Alloying pre-hardened plastic mold steel and preparation method thereof |
| CN108504935A (en) * | 2018-05-11 | 2018-09-07 | 攀钢集团攀枝花钢铁研究院有限公司 | Containing V, N Micro Alloying pre-hardened plastic mold steel and preparation method thereof |
| CN108504934A (en) * | 2018-05-11 | 2018-09-07 | 攀钢集团攀枝花钢铁研究院有限公司 | Containing V, Nb, N Micro Alloying pre-hardened plastic mold steel and preparation method thereof |
| CN108624815A (en) * | 2018-05-11 | 2018-10-09 | 攀钢集团攀枝花钢铁研究院有限公司 | Containing V, Nb, Ti Micro Alloying pre-hardened plastic mold steel and preparation method thereof |
| CN108546879A (en) * | 2018-05-11 | 2018-09-18 | 攀钢集团攀枝花钢铁研究院有限公司 | Containing V, Nb Micro Alloying pre-hardened plastic mold steel and preparation method thereof |
| CN110284055A (en) * | 2019-06-17 | 2019-09-27 | 威海津恒科技有限公司 | A kind of wear resistant automobile stamping part die and preparation method thereof |
| CA3156318A1 (en) | 2019-11-18 | 2021-05-27 | Arcelormittal | Forged part of steel and a method of manufacturing thereof |
| CN111235487B (en) * | 2020-03-23 | 2021-08-31 | 马鞍山钢铁股份有限公司 | Steel for long-life drill rod and production method thereof |
| CN114058943A (en) * | 2021-09-14 | 2022-02-18 | 武汉钢铁有限公司 | Microalloyed steel and manufacturing method thereof |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3009443C2 (en) * | 1980-03-12 | 1981-11-19 | Thyssen Edelstahlwerke AG, 4000 Düsseldorf | Use of a steel of high strength and toughness |
| JPH01176055A (en) * | 1987-12-28 | 1989-07-12 | Kawasaki Steel Corp | Non-heat treated steel for hot forging having excellent machinability |
| JPH04191348A (en) * | 1990-11-24 | 1992-07-09 | Daido Steel Co Ltd | Non-heattreated steel with high toughness |
| FR2742448B1 (en) * | 1995-12-14 | 1998-01-16 | Ascometal Sa | STEEL FOR THE MANUFACTURE OF SECABLE MECHANICAL PARTS AND OBTAINED PART |
| EP0856590B2 (en) * | 1997-02-04 | 2005-12-28 | Daido Tokushuko Kabushiki Kaisha | High strength non-thermal refining steel for hot forging |
| FR2774098B1 (en) | 1998-01-28 | 2001-08-03 | Ascometal Sa | STEEL AND PROCESS FOR THE MANUFACTURE OF SECABLE MECHANICAL PARTS |
| JP5023410B2 (en) * | 2001-03-02 | 2012-09-12 | 大同特殊鋼株式会社 | Non-tempered steel for hot forging with easy fracture separation |
| JP3893889B2 (en) * | 2001-03-21 | 2007-03-14 | 大同特殊鋼株式会社 | Non-tempered steel for hot forging that can be easily separated by fracture |
| JP2003193184A (en) * | 2001-12-28 | 2003-07-09 | Kobe Steel Ltd | Broken-split type connecting rod and steel therefor |
| JP4346404B2 (en) * | 2002-11-20 | 2009-10-21 | 本田技研工業株式会社 | Non-heat treated steel for fracture separation at low temperature and fitting member made of this non-heat treated steel |
-
2006
- 2006-09-01 DE DE102006041146A patent/DE102006041146A1/en not_active Withdrawn
-
2007
- 2007-06-23 TW TW096122683A patent/TW200825188A/en unknown
- 2007-07-27 EP EP07801178A patent/EP2057298B1/en active Active
- 2007-07-27 WO PCT/DE2007/001337 patent/WO2008028447A1/en active Application Filing
- 2007-07-27 AU AU2007294317A patent/AU2007294317B2/en not_active Ceased
- 2007-07-27 RU RU2009111860/02A patent/RU2441093C2/en not_active IP Right Cessation
- 2007-07-27 BR BRPI0716206-5A2A patent/BRPI0716206A2/en not_active IP Right Cessation
- 2007-07-27 CA CA002666677A patent/CA2666677A1/en not_active Abandoned
- 2007-07-27 MX MX2009001971A patent/MX2009001971A/en active IP Right Grant
- 2007-07-27 CN CNA2007800319547A patent/CN101542007A/en active Pending
- 2007-07-27 JP JP2009525910A patent/JP2010501733A/en active Pending
- 2007-07-27 KR KR1020097003628A patent/KR20090049591A/en not_active Application Discontinuation
- 2007-07-27 US US12/310,588 patent/US20100186855A1/en not_active Abandoned
- 2007-08-02 AR ARP070103409A patent/AR062184A1/en not_active Application Discontinuation
-
2009
- 2009-02-05 ZA ZA200900848A patent/ZA200900848B/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3453777A1 (en) | 2017-09-08 | 2019-03-13 | Cemtas Celk Makina Sanayi Ve Ticaret Anonim Sirketi | High strength and fracture splittable micro alloyed steel |
| WO2021133343A1 (en) | 2019-12-24 | 2021-07-01 | Ti̇rsan Kardan Sanayi̇ Ve Ti̇caret Anoni̇m Şi̇rketi̇ | High strength, low alloy steel composition |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2441093C2 (en) | 2012-01-27 |
| JP2010501733A (en) | 2010-01-21 |
| WO2008028447A1 (en) | 2008-03-13 |
| US20100186855A1 (en) | 2010-07-29 |
| AU2007294317B2 (en) | 2011-10-13 |
| EP2057298B1 (en) | 2012-11-14 |
| ZA200900848B (en) | 2009-12-30 |
| CN101542007A (en) | 2009-09-23 |
| RU2009111860A (en) | 2010-10-10 |
| AR062184A1 (en) | 2008-10-22 |
| BRPI0716206A2 (en) | 2013-11-12 |
| EP2057298A1 (en) | 2009-05-13 |
| KR20090049591A (en) | 2009-05-18 |
| MX2009001971A (en) | 2009-03-09 |
| TW200825188A (en) | 2008-06-16 |
| DE102006041146A1 (en) | 2008-03-06 |
| AU2007294317A1 (en) | 2008-03-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |
Effective date: 20140729 |