ATE230443T1 - STEEL PRODUCT MADE OF BAINITIC STEEL AND METHOD FOR PRODUCING THE STEEL PRODUCT - Google Patents

STEEL PRODUCT MADE OF BAINITIC STEEL AND METHOD FOR PRODUCING THE STEEL PRODUCT

Info

Publication number
ATE230443T1
ATE230443T1 AT97402787T AT97402787T ATE230443T1 AT E230443 T1 ATE230443 T1 AT E230443T1 AT 97402787 T AT97402787 T AT 97402787T AT 97402787 T AT97402787 T AT 97402787T AT E230443 T1 ATE230443 T1 AT E230443T1
Authority
AT
Austria
Prior art keywords
steel
steel product
bainitic
producing
section
Prior art date
Application number
AT97402787T
Other languages
German (de)
Inventor
Jacques Bellus
Gilles Pierson
Claude Pichard
Original Assignee
Ascometal Sa
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ascometal Sa filed Critical Ascometal Sa
Application granted granted Critical
Publication of ATE230443T1 publication Critical patent/ATE230443T1/en

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.
AT97402787T 1996-11-26 1997-11-20 STEEL PRODUCT MADE OF BAINITIC STEEL AND METHOD FOR PRODUCING THE STEEL PRODUCT ATE230443T1 (en)

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 (1)

Publication Number Publication Date
ATE230443T1 true ATE230443T1 (en) 2003-01-15

Family

ID=9498012

Family Applications (1)

Application Number Title Priority Date Filing Date
AT97402787T ATE230443T1 (en) 1996-11-26 1997-11-20 STEEL PRODUCT MADE OF BAINITIC STEEL AND METHOD FOR PRODUCING THE STEEL PRODUCT

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)

* Cited by examiner, † Cited by third party
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
TWI302572B (en) * 2003-09-30 2008-11-01 Nippon Steel Corp High yield ratio, high strength steel sheet, high yield ratio, high strength hot dip galvanized steel sheet and high yield ratio, high strength alloyed hot dip galvanized steel sheet and process for producing same
EP2103704B1 (en) 2008-03-10 2012-07-11 Swiss Steel AG Hot-rolled long product and method for its manufacture
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
WO2013117953A1 (en) * 2012-02-10 2013-08-15 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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
DE69718132D1 (en) 2003-02-06
NO975392L (en) 1998-05-27
EP0845544B1 (en) 2003-01-02
NO975392D0 (en) 1997-11-24
EP0845544A1 (en) 1998-06-03
ES2190514T3 (en) 2003-08-01
FR2756298A1 (en) 1998-05-29
DE69718132T2 (en) 2003-10-09
FR2756298B1 (en) 1998-12-24

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