FR2756298B1 - STEEL AND METHOD FOR THE MANUFACTURE OF A MECHANICAL PART HAVING A BATH STRUCTURE - Google Patents
STEEL AND METHOD FOR THE MANUFACTURE OF A MECHANICAL PART HAVING A BATH STRUCTUREInfo
- Publication number
- FR2756298B1 FR2756298B1 FR9614434A FR9614434A FR2756298B1 FR 2756298 B1 FR2756298 B1 FR 2756298B1 FR 9614434 A FR9614434 A FR 9614434A FR 9614434 A FR9614434 A FR 9614434A FR 2756298 B1 FR2756298 B1 FR 2756298B1
- Authority
- FR
- France
- Prior art keywords
- steel
- section
- sum
- tensile strength
- ratio
- 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.)
- Expired - Fee Related
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
- C21D8/0263—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot rolling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
- C21D1/19—Hardening; Quenching with or without subsequent tempering by interrupted quenching
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
- C21D1/19—Hardening; Quenching with or without subsequent tempering by interrupted quenching
- C21D1/20—Isothermal quenching, e.g. bainitic hardening
-
- 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
- C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/002—Bainite
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Coating With Molten Metal (AREA)
Abstract
A steel section comprises by weight 0.06-0.11% carbon, 1-1.7% manganese, 0.15-0.40% silicon, 0.025-0.10% sulphur, up to 0.025% phosphorous, 0-0.25% nickel, 0.5-1.2% chromium, 0.08-0.13% molybdenum, 0-0.25% copper, 0.003-0.035% aluminium, 0-0.035% titanium, 0-0.10% vanadium, 0-0.06% niobium, 0.0008-0.0040% boron and 0.0060-0.011% nitrogen, with optionally up to following levels- 0.010% tellurium, 0.025% selenium, 0.13% bismuth, 0.090% lead and 0.0040% calcium, the remainder being iron and impurities. The sum Mn+Cr+Mo is at least 2.1%, the sum V+Nb+Ti is between 0.015 and 0.13%, Al+Ti is at least 0.020% and the ratio Mn/S is at least 12. The section has a bainitic structure and exhibits following mechanical properties at 20 degrees C- tensile strength at least 1000 MPa, ratio of elastic limit to tensile strength at least 0.78, resilience at least 45 J/cm<2> and contraction of area at least 55%. Also claimed are making such a section and machining it to form a finished article.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9614434A FR2756298B1 (en) | 1996-11-26 | 1996-11-26 | STEEL AND METHOD FOR THE MANUFACTURE OF A MECHANICAL PART HAVING A BATH STRUCTURE |
AT97402787T ATE230443T1 (en) | 1996-11-26 | 1997-11-20 | STEEL PRODUCT MADE OF BAINITIC STEEL AND METHOD FOR PRODUCING THE STEEL PRODUCT |
EP97402787A EP0845544B1 (en) | 1996-11-26 | 1997-11-20 | Steel product made from bainitic steel and process for making the steel product |
DE69718132T DE69718132T2 (en) | 1996-11-26 | 1997-11-20 | Steel product made from bainitic steel and method for producing the steel product |
ES97402787T ES2190514T3 (en) | 1996-11-26 | 1997-11-20 | SIDERURGICO PRODUCT MADE OF BAINITIC STEEL AND PROCESS TO MANUFACTURE IT. |
NO975392A NO975392L (en) | 1996-11-26 | 1997-11-24 | Metallurgical beam product with bainitic structure and process for making it |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9614434A FR2756298B1 (en) | 1996-11-26 | 1996-11-26 | STEEL AND METHOD FOR THE MANUFACTURE OF A MECHANICAL PART HAVING A BATH STRUCTURE |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2756298A1 FR2756298A1 (en) | 1998-05-29 |
FR2756298B1 true FR2756298B1 (en) | 1998-12-24 |
Family
ID=9498012
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9614434A Expired - Fee Related FR2756298B1 (en) | 1996-11-26 | 1996-11-26 | STEEL AND METHOD FOR THE MANUFACTURE OF A MECHANICAL PART HAVING A BATH STRUCTURE |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0845544B1 (en) |
AT (1) | ATE230443T1 (en) |
DE (1) | DE69718132T2 (en) |
ES (1) | ES2190514T3 (en) |
FR (1) | FR2756298B1 (en) |
NO (1) | NO975392L (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2802607B1 (en) | 1999-12-15 | 2002-02-01 | Inst Francais Du Petrole | FLEXIBLE PIPE COMPRISING LOW CARBON STEEL WEAPONS |
FR2807068B1 (en) * | 2000-03-29 | 2002-10-11 | Usinor | HOT ROLLED STEEL WITH VERY HIGH LIMIT OF ELASTICITY AND MECHANICAL STRENGTH FOR USE IN PARTICULAR FOR THE PRODUCTION OF PARTS OF MOTOR VEHICLES |
JP2003096534A (en) * | 2001-07-19 | 2003-04-03 | Mitsubishi Heavy Ind Ltd | High strength heat resistant steel, method of producing high strength heat resistant steel, and method of producing high strength heat resistant tube member |
EP2309012B1 (en) * | 2003-09-30 | 2012-09-12 | Nippon Steel Corporation | High yield ratio and high-strength cold rolled thin steel sheet superior in weldability and ductility, high-yield ratio high-strength hot-dip galvanized cold rolled thin steel sheet, high-yield ratio high-strength hot-dip galvannealed cold rolled thin steel sheet, and methods of production of same |
ES2391312T3 (en) | 2008-03-10 | 2012-11-23 | Swiss Steel Ag | Longitudinal hot rolled product and manufacturing process |
FR2958660B1 (en) * | 2010-04-07 | 2013-07-19 | Ascometal Sa | STEEL FOR MECHANICAL PIECES WITH HIGH CHARACTERISTICS AND METHOD FOR MANUFACTURING THE SAME. |
EP2453026A1 (en) | 2010-11-10 | 2012-05-16 | Swiss Steel AG | Thermoformed steel product and method for producing same |
EP2812455A1 (en) * | 2012-02-10 | 2014-12-17 | Ascometal | Process for making a steel part, and steel part so obtained |
US20160138143A1 (en) * | 2014-11-18 | 2016-05-19 | Air Liquide Large Industries U.S. Lp | Materials of construction for use in high pressure hydrogen storage in a salt cavern |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5524932A (en) * | 1978-08-08 | 1980-02-22 | Nippon Steel Corp | Manufacture of bainite tough hardening steel |
JPS59110721A (en) * | 1982-12-14 | 1984-06-26 | Nippon Steel Corp | Preparation of low alloyed high tensile steel excellent in sulfide stress corrosion cracking resistance |
DE3571254D1 (en) * | 1985-02-16 | 1989-08-03 | Ovako Oy | Method and steel alloy for producing high-strength hot forgings |
GB8603500D0 (en) * | 1986-02-13 | 1986-03-19 | Hunting Oilfield Services Ltd | Steel alloys |
JPH0565540A (en) * | 1991-09-10 | 1993-03-19 | Nissan Motor Co Ltd | Manufacture of high strength bolt |
FR2685708B1 (en) * | 1991-12-30 | 1994-07-22 | Ascometal Sa | LONG PRODUCT FOR MANUFACTURING BY COLD FORMING, ESPECIALLY BY COLD HITTING, OF PRODUCTS ELABORATED SUCH AS BOLTS AND METHOD FOR MANUFACTURING A COLD PRODUCT. |
JPH06248341A (en) * | 1993-02-23 | 1994-09-06 | Sumitomo Metal Ind Ltd | Production of steel with high strength and high toughness from non-heat-treated steel |
FR2741632B1 (en) * | 1995-11-27 | 1997-12-26 | Ascometal Sa | STEEL FOR MANUFACTURING A FORGED PART HAVING A BATH STRUCTURE AND METHOD FOR MANUFACTURING A PART |
-
1996
- 1996-11-26 FR FR9614434A patent/FR2756298B1/en not_active Expired - Fee Related
-
1997
- 1997-11-20 DE DE69718132T patent/DE69718132T2/en not_active Expired - Fee Related
- 1997-11-20 EP EP97402787A patent/EP0845544B1/en not_active Expired - Lifetime
- 1997-11-20 ES ES97402787T patent/ES2190514T3/en not_active Expired - Lifetime
- 1997-11-20 AT AT97402787T patent/ATE230443T1/en not_active IP Right Cessation
- 1997-11-24 NO NO975392A patent/NO975392L/en unknown
Also Published As
Publication number | Publication date |
---|---|
EP0845544B1 (en) | 2003-01-02 |
ES2190514T3 (en) | 2003-08-01 |
ATE230443T1 (en) | 2003-01-15 |
DE69718132D1 (en) | 2003-02-06 |
DE69718132T2 (en) | 2003-10-09 |
FR2756298A1 (en) | 1998-05-29 |
NO975392D0 (en) | 1997-11-24 |
NO975392L (en) | 1998-05-27 |
EP0845544A1 (en) | 1998-06-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |
Effective date: 20100730 |