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TW200606260A - 490MPa grade high strength weldable structural steel having excellent in high temperature strength - Google Patents

490MPa grade high strength weldable structural steel having excellent in high temperature strength

Info

Publication number
TW200606260A
TW200606260A TW094124502A TW94124502A TW200606260A TW 200606260 A TW200606260 A TW 200606260A TW 094124502 A TW094124502 A TW 094124502A TW 94124502 A TW94124502 A TW 94124502A TW 200606260 A TW200606260 A TW 200606260A
Authority
TW
Taiwan
Prior art keywords
less
structural steel
strength
weldable structural
high temperature
Prior art date
Application number
TW094124502A
Other languages
Chinese (zh)
Other versions
TWI297732B (en
Inventor
Yasushi Mizutani
Yoshiyuki Watanabe
Ryuuji Uemori
Tatsuya Kumagai
Original Assignee
Nippon Steel Corp
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 Nippon Steel Corp filed Critical Nippon Steel Corp
Publication of TW200606260A publication Critical patent/TW200606260A/en
Application granted granted Critical
Publication of TWI297732B publication Critical patent/TWI297732B/en

Links

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
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • 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
    • 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
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • 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
    • 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
    • C21D2211/005—Ferrite
    • 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
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226—Hot rolling

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)
  • Metal Rolling (AREA)

Abstract

The present invention provides a 490MPa grade high strength weldable structural steel having excellent in high temperature strength at more than 600 DEG C and less than 800 DEG C and a method of producing the same. This high strength weldable structural steel contains, in mass, C at more than 0.005% and less than 0.040%, Si at less than 0.5%, Mn at less than 0.5%, P at less than 0.02%, S at less than 0.01%, Mo at 0.3 - 1.5%, Nb at 0.03 - 0.15%, Al at less than 0.06%, N at less than 0.006%, and further contains one or more of Cu, Ni, Cr, V, Ti, Ca, REM or Mg, if necessary, and satisfy the welding crack sensitivity equation of P CM = C+ Si/30 + Mn/20 + Cu/20 + Ni/60 + Cr/20 + Mo/15 + V/10 + 5B < 0.15, and without containing B, and the remainder Fe and unavoidable impurities, and further the microstructure of this high strength weldable structural steel has a mixed structure composed of ferrite and bainite, where the ratio of bainite is 20 - 90%.
TW094124502A 2004-07-21 2005-07-20 490mpa grade high strength weldable structural steel having excellent in high temperature strength TWI297732B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004213511A JP4864297B2 (en) 2004-07-21 2004-07-21 490 MPa class high strength steel for welded structure excellent in high temperature strength and method for producing the same

Publications (2)

Publication Number Publication Date
TW200606260A true TW200606260A (en) 2006-02-16
TWI297732B TWI297732B (en) 2008-06-11

Family

ID=35655876

Family Applications (1)

Application Number Title Priority Date Filing Date
TW094124502A TWI297732B (en) 2004-07-21 2005-07-20 490mpa grade high strength weldable structural steel having excellent in high temperature strength

Country Status (6)

Country Link
US (1) US20060016526A1 (en)
EP (1) EP1790749A1 (en)
JP (1) JP4864297B2 (en)
CN (1) CN1989264A (en)
TW (1) TWI297732B (en)
WO (1) WO2006009091A1 (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2033204A4 (en) * 2006-06-29 2011-03-23 Lg Electronics Inc Paste, method of manufacturing plasma display panel using the paste and plasma display apparatus
JP4673822B2 (en) * 2006-11-14 2011-04-20 新日本製鐵株式会社 Refractory steel material excellent in toughness of welded joint and method for producing the same
JP4858221B2 (en) * 2007-02-22 2012-01-18 住友金属工業株式会社 High-tensile steel with excellent ductile crack initiation characteristics
DE102007061084A1 (en) * 2007-12-19 2009-07-02 Federal-Mogul Sealing Systems Gmbh Metallic flat gasket and manufacturing process
CN101613840B (en) * 2008-06-23 2011-03-30 宝山钢铁股份有限公司 Super-thick steel plate with obdurability matching and excellent high-temperature performance and manufacturing method thereof
JP5743382B2 (en) * 2009-03-19 2015-07-01 Ｊｆｅスチール株式会社 Steel material for earthquake-resistant structure and manufacturing method thereof
KR101130013B1 (en) * 2009-03-26 2012-03-26 현대제철 주식회사 High strenth hot rolled steel sheet, and method for manufacturing the same
US20110186182A1 (en) * 2009-05-15 2011-08-04 Tetsushi Chida Steel for nitrocarburizing and nitrocarburized parts
CN101775561B (en) * 2010-03-19 2012-07-11 江苏省沙钢钢铁研究院有限公司 Low-yield-ratio high-strength thick plate and preparation process thereof
CN101857939A (en) * 2010-06-13 2010-10-13 攀钢集团钢铁钒钛股份有限公司 Low-alloy structural strip steel with high strength and high toughness and production method thereof
US9493864B2 (en) * 2013-03-15 2016-11-15 Am/Ns Calvert Llc Line pipe steels and process of manufacturing
CN103643156B (en) * 2013-11-21 2016-05-11 江苏天舜金属材料集团有限公司 A kind of above high tensile reinforcement of 630MPa level and armored concrete application process thereof
CN107190203B (en) * 2017-05-31 2019-07-23 武汉钢铁有限公司 With the yield strength >=800MPa hot rolled sheet and production method of sheet billet Direct Rolling
CN109487153B (en) * 2017-09-11 2021-01-08 上海梅山钢铁股份有限公司 High-reaming hot-rolled pickled steel plate with tensile strength of 440MPa
CN110129539B (en) * 2019-05-31 2021-03-23 东北大学 Production process of 500MPa grade H-shaped steel for ocean engineering
CN110699594B (en) * 2019-10-30 2021-06-04 攀钢集团攀枝花钢铁研究院有限公司 Method for smelting IF steel from semisteel at low cost
CN112746158A (en) * 2019-12-30 2021-05-04 宝钢湛江钢铁有限公司 YP460MPa thick steel plate with low cost, high crack resistance and high weldability and manufacturing method thereof

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2760191B2 (en) * 1991-12-20 1998-05-28 住友金属工業株式会社 Manufacturing method of high weathering steel for steel building with excellent high temperature strength characteristics
JP3417878B2 (en) * 1999-07-02 2003-06-16 株式会社神戸製鋼所 High-strength hot-rolled steel sheet excellent in stretch flangeability and fatigue properties and its manufacturing method
JP4348102B2 (en) * 2002-05-20 2009-10-21 新日本製鐵株式会社 490 MPa class high strength steel excellent in high temperature strength and manufacturing method thereof
CN101082105A (en) * 2002-03-29 2007-12-05 新日本制铁株式会社 High tensile steel excellent in high temperature strength and method for production thereof
JP7056044B2 (en) * 2017-09-11 2022-04-19 コニカミノルタ株式会社 Paper processing equipment, image forming system and program

Also Published As

Publication number Publication date
TWI297732B (en) 2008-06-11
JP2006028628A (en) 2006-02-02
EP1790749A1 (en) 2007-05-30
CN1989264A (en) 2007-06-27
WO2006009091A1 (en) 2006-01-26
US20060016526A1 (en) 2006-01-26
JP4864297B2 (en) 2012-02-01

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Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees