SG11201403786TA - High tensile steel plate having excellent low-temperature toughness in weld heat-affected zones, and method for producing same - Google Patents

High tensile steel plate having excellent low-temperature toughness in weld heat-affected zones, and method for producing same

Info

Publication number
SG11201403786TA
SG11201403786TA SG11201403786TA SG11201403786TA SG11201403786TA SG 11201403786T A SG11201403786T A SG 11201403786TA SG 11201403786T A SG11201403786T A SG 11201403786TA SG 11201403786T A SG11201403786T A SG 11201403786TA SG 11201403786T A SG11201403786T A SG 11201403786TA
Authority
SG
Singapore
Prior art keywords
steel plate
high tensile
excellent low
temperature toughness
producing same
Prior art date
Application number
SG11201403786TA
Inventor
Masao Yuga
Shigeki Kitsuya
Yusuke Terazawa
Minoru Suwa
Kenji Hayashi
Original Assignee
Jfe 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 Jfe Steel Corp filed Critical Jfe Steel Corp
Publication of SG11201403786TA publication Critical patent/SG11201403786TA/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/58Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/14Ferrous alloys, e.g. steel alloys containing titanium or zirconium
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D6/00Heat treatment of ferrous alloys
    • C21D6/001Heat treatment of ferrous alloys containing Ni
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D6/00Heat treatment of ferrous alloys
    • C21D6/002Heat treatment of ferrous alloys containing Cr
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D6/00Heat treatment of ferrous alloys
    • C21D6/004Heat treatment of ferrous alloys containing Cr and Ni
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D6/00Heat treatment of ferrous alloys
    • C21D6/005Heat treatment of ferrous alloys containing Mn
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D6/00Heat treatment of ferrous alloys
    • C21D6/008Heat treatment of ferrous alloys containing Si
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226Hot rolling
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0263Modifying 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
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/46Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/001Ferrous alloys, e.g. steel alloys containing N
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/002Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/02Ferrous alloys, e.g. steel alloys containing silicon
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/04Ferrous alloys, e.g. steel alloys containing manganese
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/06Ferrous alloys, e.g. steel alloys containing aluminium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/08Ferrous alloys, e.g. steel alloys containing nickel
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/12Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/16Ferrous alloys, e.g. steel alloys containing copper
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/46Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/48Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/50Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D2211/00Microstructure comprising significant phases
    • C21D2211/005Ferrite

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)
SG11201403786TA 2011-02-15 2012-03-01 High tensile steel plate having excellent low-temperature toughness in weld heat-affected zones, and method for producing same SG11201403786TA (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2011029276 2011-02-15
JP2012023954A JP5177310B2 (en) 2011-02-15 2012-02-07 High tensile strength steel sheet with excellent low temperature toughness of weld heat affected zone and method for producing the same
PCT/JP2012/055890 WO2013118313A1 (en) 2011-02-15 2012-03-01 High tensile steel plate having excellent low-temperature toughness in weld heat-affected zones, and method for producing same

Publications (1)

Publication Number Publication Date
SG11201403786TA true SG11201403786TA (en) 2014-11-27

Family

ID=47014807

Family Applications (1)

Application Number Title Priority Date Filing Date
SG11201403786TA SG11201403786TA (en) 2011-02-15 2012-03-01 High tensile steel plate having excellent low-temperature toughness in weld heat-affected zones, and method for producing same

Country Status (7)

Country Link
US (1) US9790579B2 (en)
EP (1) EP2813596B1 (en)
JP (1) JP5177310B2 (en)
KR (2) KR102055039B1 (en)
CN (1) CN104105810B (en)
SG (1) SG11201403786TA (en)
WO (1) WO2013118313A1 (en)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5846311B2 (en) * 2012-09-06 2016-01-20 Jfeスチール株式会社 Thick high-strength steel excellent in welding heat affected zone CTOD characteristics and method for producing the same
WO2014132627A1 (en) * 2013-02-28 2014-09-04 Jfeスチール株式会社 Thick steel plate and production method for thick steel plate
KR20150126031A (en) 2013-03-12 2015-11-10 제이에프이 스틸 가부시키가이샤 Thick steel sheet having excellent ctod properties in multilayer welded joints, and manufacturing method for thick steel sheet
CN105008574B (en) * 2013-03-12 2018-05-18 杰富意钢铁株式会社 The steel plate and its manufacturing method of multi-layer welding connector CTOD characteristic goods
CN105229190B (en) * 2013-06-25 2019-07-09 杰富意钢铁株式会社 The high strength steel and its manufacturing method of excellent in fatigue characteristics
US20160312327A1 (en) * 2013-12-12 2016-10-27 Jfe Steel Corporation Steel plate and method for manufacturing same (as amended)
KR20160127808A (en) 2014-03-31 2016-11-04 제이에프이 스틸 가부시키가이샤 High-tensile-strength steel plate and process for producing same
KR101937005B1 (en) * 2014-03-31 2019-01-09 제이에프이 스틸 가부시키가이샤 Weld joint
CN104073719A (en) * 2014-06-25 2014-10-01 宝山钢铁股份有限公司 High-strength welded steel pipe and manufacturing method thereof
EP3006587B1 (en) 2014-09-05 2019-04-24 Jfe Steel Corporation Thick steel plate having excellent ctod properties in multi-layer welded joints and method for producing same
KR101997381B1 (en) * 2015-03-27 2019-10-01 제이에프이 스틸 가부시키가이샤 High-strength steel, method for manufacturing high-strength steel, steel pipe, and method for manufacturing steel pipe
KR101899694B1 (en) * 2016-12-23 2018-09-17 주식회사 포스코 Thick steel plate having excellent low-temperature impact toughness and ctod properties, and method for manufacturing the same
WO2018216665A1 (en) 2017-05-22 2018-11-29 Jfeスチール株式会社 Thick steel plate and method for manufacturing same
JP6816739B2 (en) * 2018-04-05 2021-01-20 Jfeスチール株式会社 Steel plate and its manufacturing method
CN110616300B (en) * 2018-06-19 2021-02-19 宝山钢铁股份有限公司 Low-temperature steel with excellent CTOD (carbon to steel) characteristics and manufacturing method thereof
TWI715852B (en) * 2018-07-11 2021-01-11 永鼎應用金屬股份有限公司 Austenitic alloy steel
US11505855B2 (en) * 2018-07-27 2022-11-22 Nippon Steel Corporation High-strength steel sheet
KR20220047632A (en) * 2019-09-20 2022-04-18 제이에프이 스틸 가부시키가이샤 Thick steel plate and manufacturing method thereof
JP7330862B2 (en) * 2019-11-01 2023-08-22 株式会社神戸製鋼所 High-strength steel sheet with excellent low-temperature toughness of base material and joint, and manufacturing method thereof
CN111286666B (en) * 2020-02-19 2021-06-22 包头钢铁(集团)有限责任公司 Cleanliness control method for IF deep drawing steel
JP2021161524A (en) * 2020-04-02 2021-10-11 株式会社神戸製鋼所 High-strength steel plate having excellent base-metal toughness and joint toughness, and method for producing the same
CN113388782A (en) * 2021-06-03 2021-09-14 南京钢铁股份有限公司 Low-cost steel with tensile strength of 520MPa for welding structure and manufacturing method thereof
WO2023219146A1 (en) * 2022-05-12 2023-11-16 Jfeスチール株式会社 Steel sheet and method for manufacturing same
CN115323270A (en) * 2022-07-29 2022-11-11 南京钢铁股份有限公司 Low-temperature steel plate for VLGC ship and manufacturing method thereof

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5186823A (en) 1975-01-28 1976-07-29 Nippon Emuko Uiiton Kk PAIPURENKETSUSOCHI
JPS60152626A (en) 1984-01-20 1985-08-10 Kawasaki Steel Corp Method for stabilizing toughness of high tension steel for welded structure
JPS60184663A (en) 1984-02-29 1985-09-20 Kawasaki Steel Corp High-tensile steel for low temperature service for welding with large heat input
JPH0353367A (en) 1989-07-20 1991-03-07 Toshiba Corp Decentralized information processing system
JP3045856B2 (en) 1991-11-13 2000-05-29 川崎製鉄株式会社 Method for producing high toughness Cu-containing high tensile steel
JPH05195058A (en) * 1992-01-14 1993-08-03 Kobe Steel Ltd Production of thick steel plate having high toughness and high tensile strength
JP3053367B2 (en) 1996-04-01 2000-06-19 株式会社ジャック Panel type container
JP3487262B2 (en) 2000-05-26 2004-01-13 住友金属工業株式会社 High strength thick steel plate excellent in CTOD characteristics and method for producing the same
JP3697202B2 (en) 2001-11-12 2005-09-21 新日本製鐵株式会社 Steel with excellent toughness of weld heat affected zone and method for producing the same
JP2005232513A (en) * 2004-02-18 2005-09-02 Sumitomo Metal Ind Ltd High strength steel sheet and manufacturing method
JP4507669B2 (en) * 2004-03-31 2010-07-21 Jfeスチール株式会社 Manufacturing method of low yield ratio steel for low temperature with excellent weld toughness
JP4946092B2 (en) * 2006-02-28 2012-06-06 Jfeスチール株式会社 High-strength steel and manufacturing method thereof
WO2009072753A1 (en) * 2007-12-04 2009-06-11 Posco High-strength steel sheet with excellent low temperature toughness and manufacturing method thereof
JP5076939B2 (en) * 2008-02-07 2012-11-21 Jfeスチール株式会社 High-strength thick steel plate with excellent toughness and brittle crack propagation stopping characteristics for high heat input welds and its manufacturing method
JP5245476B2 (en) * 2008-03-15 2013-07-24 Jfeスチール株式会社 Steel plate for line pipe
JP5146043B2 (en) * 2008-03-26 2013-02-20 Jfeスチール株式会社 High-strength thick steel plate with excellent toughness and brittle crack propagation stopping characteristics for high heat input welds and its manufacturing method
JP5439887B2 (en) 2008-03-31 2014-03-12 Jfeスチール株式会社 High-strength steel and manufacturing method thereof
WO2010104165A1 (en) * 2009-03-12 2010-09-16 住友金属工業株式会社 Hic-resistant thick steel sheet and uoe steel pipe
JP4874435B2 (en) * 2010-02-08 2012-02-15 新日本製鐵株式会社 Thick steel plate manufacturing method
BR112012020436B1 (en) * 2010-02-15 2019-04-30 Nippon Steel & Sumitomo Metal Corporation STEEL SHEET PRODUCTION METHOD.

Also Published As

Publication number Publication date
KR20160090399A (en) 2016-07-29
EP2813596A4 (en) 2015-08-05
US20150075682A1 (en) 2015-03-19
JP5177310B2 (en) 2013-04-03
EP2813596B1 (en) 2016-11-09
CN104105810B (en) 2017-03-01
WO2013118313A1 (en) 2013-08-15
CN104105810A (en) 2014-10-15
EP2813596A1 (en) 2014-12-17
JP2012184500A (en) 2012-09-27
KR20140117560A (en) 2014-10-07
KR102055039B1 (en) 2019-12-11
US9790579B2 (en) 2017-10-17

Similar Documents

Publication Publication Date Title
SG11201403786TA (en) High tensile steel plate having excellent low-temperature toughness in weld heat-affected zones, and method for producing same
SG11201400459WA (en) High-tensile steel plate giving welding heat-affected zone with excellent low-temperature toughness, and process for producing same
EP2757169A4 (en) High-strength steel sheet having excellent workability and method for producing same
EP2740812A4 (en) High-strength steel sheet having superior impact resistance, method for producing same, high-strength galvanized steel sheet, and method for producing same
EP2759615A4 (en) High-strength hot-rolled steel sheet having excellent bending characteristics and low-temperature toughness and method for producing same
EP2735622A4 (en) Low-yield-ratio high-strength hot-rolled steel plate with excellent low-temperature toughness and process for producing same
EP3050988A4 (en) High-strength steel sheet having excellent ductility and low-temperature toughness, and method for producing same
EP2799567A4 (en) High strength steel pipe having excellent ductility and low temperature toughness, high strength steel sheet, and method for producing steel sheet
EP2738276A4 (en) High-strength zinc-plated steel sheet and high-strength steel sheet having superior moldability, and method for producing each
ZA201400542B (en) Hot-formed previously welded steel part with very high mechanical resistance, and production method
EP2738275A4 (en) High-strength zinc-plated steel sheet and high-strength steel sheet having superior moldability, and method for producing each
EP2728029A4 (en) High strength hot-rolled steel sheet for welded steel line pipe having excellent souring resistance, and method for producing same
EP2617857A4 (en) Thick welded steel pipe having excellent low-temperature toughness, method for producing thick welded steel pipe having excellent low-temperature toughness, and steel sheet for producing thick welded steel pipe
EP2738274A4 (en) High-strength cold-rolled steel sheet with excellent stretch flangeability and precision punchability, and process for producing same
PL2698440T3 (en) High-strength hot-rolled steel sheet with excellent local deformability, and manufacturing method therefor
EP2524972A4 (en) High-strength steel plate having excellent formability, and production method for same
EP2559783A4 (en) High-strength hot-rolled steel plate exhibiting excellent stretch flangeability and fatigue resistance properties, and production method therefor
EP2692894A4 (en) Bainite-containing high-strength hot-rolled steel plate with excellent isotropic workability and process for producing same
GB2477419B (en) High-strength cold-rolled steel sheet excellent in workability and method for manufacturing the same
PL2738280T3 (en) High-strength galvanized steel sheet having superior bendability and method for producing same
EP2554699A4 (en) Steel sheet with high tensile strength and superior ductility and method for producing same
EP2703512A4 (en) High-strength steel plate with excellent formability and stability of material properties, and method for manufacturing same
EP2743364A4 (en) Hot-rolled steel sheet having high yield ratio and excellent low-temperature impact energy absorption and haz softening resistance and method for producing same
EP2586885A4 (en) High-strength hot-rolled steel sheet having excellent stretch flangeability and method for producing same
EP2684972A4 (en) Steel sheets for hot stamping, method for manufacturing same, and method for manufacturing high-strength parts