EP3385399A4 - Non-heat-treated steel sheet having high yield strength in which hardness of a welding-heat-affected zone and degradation of low-temperature toughness of the welding-heat-affected zone are suppressed - Google Patents

Non-heat-treated steel sheet having high yield strength in which hardness of a welding-heat-affected zone and degradation of low-temperature toughness of the welding-heat-affected zone are suppressed Download PDF

Info

Publication number
EP3385399A4
EP3385399A4 EP16870530.9A EP16870530A EP3385399A4 EP 3385399 A4 EP3385399 A4 EP 3385399A4 EP 16870530 A EP16870530 A EP 16870530A EP 3385399 A4 EP3385399 A4 EP 3385399A4
Authority
EP
European Patent Office
Prior art keywords
heat
welding
affected zone
hardness
degradation
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.)
Withdrawn
Application number
EP16870530.9A
Other languages
German (de)
French (fr)
Other versions
EP3385399A1 (en
Inventor
Koji Kurata
Haruya KAWANO
Kiichiro TASHIRO
Motoki KAKIZAKI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kobe Steel Ltd
Original Assignee
Kobe Steel Ltd
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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Publication of EP3385399A1 publication Critical patent/EP3385399A1/en
Publication of EP3385399A4 publication Critical patent/EP3385399A4/en
Withdrawn legal-status Critical Current

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
    • C22C38/04—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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/08—Making tubes with welded or soldered seams
    • 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
    • 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
    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • 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
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • 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
    • C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
    • 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
    • C22C38/06—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
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
    • 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
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
    • 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
    • C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
    • 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
    • C22C38/20—Ferrous alloys, e.g. steel alloys containing chromium with copper
    • 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
    • C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
    • 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
    • C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
    • 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
    • C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
    • 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
    • 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
    • C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • 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
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
    • 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
    • C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel 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
    • 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

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)
  • Treatment Of Steel In Its Molten State (AREA)
EP16870530.9A 2015-12-04 2016-11-24 Non-heat-treated steel sheet having high yield strength in which hardness of a welding-heat-affected zone and degradation of low-temperature toughness of the welding-heat-affected zone are suppressed Withdrawn EP3385399A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015237839 2015-12-04
PCT/JP2016/084857 WO2017094593A1 (en) 2015-12-04 2016-11-24 Non-heat-treated steel sheet having high yield strength in which hardness of a welding-heat-affected zone and degradation of low-temperature toughness of the welding-heat-affected zone are suppressed

Publications (2)

Publication Number Publication Date
EP3385399A1 EP3385399A1 (en) 2018-10-10
EP3385399A4 true EP3385399A4 (en) 2019-05-22

Family

ID=58796697

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16870530.9A Withdrawn EP3385399A4 (en) 2015-12-04 2016-11-24 Non-heat-treated steel sheet having high yield strength in which hardness of a welding-heat-affected zone and degradation of low-temperature toughness of the welding-heat-affected zone are suppressed

Country Status (5)

Country Link
EP (1) EP3385399A4 (en)
JP (1) JP2017106107A (en)
KR (1) KR20180085791A (en)
CN (1) CN108350540A (en)
WO (1) WO2017094593A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113737103A (en) * 2017-09-08 2021-12-03 杰富意钢铁株式会社 Steel sheet and method for producing same
US11401568B2 (en) 2018-01-30 2022-08-02 Jfe Steel Corporation Steel material for line pipes, method for producing the same, and method for producing line pipe
KR102447054B1 (en) * 2018-01-30 2022-09-23 제이에프이 스틸 가부시키가이샤 Steel material for line pipe, manufacturing method thereof, and manufacturing method of line pipe
CN113430460A (en) * 2021-06-19 2021-09-24 宝钢湛江钢铁有限公司 Low-cost high-strength non-quenched and tempered steel plate with yield strength of 690MPa and manufacturing method thereof

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006169591A (en) * 2004-12-16 2006-06-29 Kobe Steel Ltd Non-heat treated steel plate with high yield strength
JP2008101242A (en) * 2006-10-19 2008-05-01 Jfe Steel Kk High-strength steel plate with excellent hic resistance for line pipe, and its manufacturing method
EP2441854A1 (en) * 2009-06-11 2012-04-18 Nippon Steel Corporation High strength steel pipe and method for producing same
EP2505682A1 (en) * 2009-11-25 2012-10-03 JFE Steel Corporation Welded steel pipe for linepipe with superior compressive strength, and process for producing same
EP2505683A1 (en) * 2009-11-25 2012-10-03 JFE Steel Corporation Welded steel pipe for linepipe with superior compressive strength and excellent sour resistance, and process for producing same
JP2013194316A (en) * 2012-03-23 2013-09-30 Jfe Steel Corp High strength steel plate for high heat input welding excellent in material uniformity in steel plate and method for manufacturing the same
JP2013237101A (en) * 2012-04-20 2013-11-28 Kobe Steel Ltd Steel having excellent hydrogen induced cracking resistance and method for producing the same
WO2014148447A1 (en) * 2013-03-22 2014-09-25 株式会社神戸製鋼所 Steel material having superior toughness at welding heat affected zone
WO2015151469A1 (en) * 2014-03-31 2015-10-08 Ｊｆｅスチール株式会社 Steel material for highly-deformable line pipes having superior strain aging characteristics and anti-hic characteristics, method for manufacturing same, and welded steel pipe

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3863413B2 (en) * 2001-11-22 2006-12-27 株式会社神戸製鋼所 High toughness high tension non-tempered thick steel plate and manufacturing method thereof
JP2005290554A (en) * 2004-03-11 2005-10-20 Nippon Steel Corp Steel plate excellent in machinability, toughness and weldability, and method for production thereof
JP4772486B2 (en) 2005-04-26 2011-09-14 新日本製鐵株式会社 High strength steel pipe for low temperature
JP4768447B2 (en) * 2006-01-11 2011-09-07 株式会社神戸製鋼所 Weatherproof steel plate with excellent toughness of weld heat affected zone
JP4950528B2 (en) * 2006-03-16 2012-06-13 株式会社神戸製鋼所 Low yield ratio high strength steel with excellent toughness of heat affected zone and its manufacturing method
JP4515427B2 (en) * 2006-09-29 2010-07-28 株式会社神戸製鋼所 Steel with excellent toughness and fatigue crack growth resistance in weld heat affected zone and its manufacturing method
RU2427662C2 (en) * 2006-11-30 2011-08-27 Ниппон Стил Корпорейшн High strength welded steel pipe for pipeline possessing excellent low temperature ductility and procedure for its fabrication
JP5037204B2 (en) 2007-04-12 2012-09-26 新日本製鐵株式会社 Method for producing high-strength steel material having yield stress of 500 MPa or more and tensile strength of 570 MPa or more which is excellent in toughness of weld heat affected zone
RU2458996C1 (en) 2008-11-06 2012-08-20 Ниппон Стил Корпорейшн Method for obtaining plate steel and steel pipes for ultrahigh-strong pipeline
JP5342902B2 (en) * 2009-03-11 2013-11-13 株式会社神戸製鋼所 Steel material excellent in toughness and base metal fatigue characteristics of weld heat-affected zone and its manufacturing method
DK2434027T3 (en) * 2009-05-22 2015-12-07 Jfe Steel Corp Steel materials for welding with high heat input
JP5704706B2 (en) * 2011-03-16 2015-04-22 株式会社神戸製鋼所 High-strength thick steel plate with excellent HAZ toughness

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006169591A (en) * 2004-12-16 2006-06-29 Kobe Steel Ltd Non-heat treated steel plate with high yield strength
JP2008101242A (en) * 2006-10-19 2008-05-01 Jfe Steel Kk High-strength steel plate with excellent hic resistance for line pipe, and its manufacturing method
EP2441854A1 (en) * 2009-06-11 2012-04-18 Nippon Steel Corporation High strength steel pipe and method for producing same
EP2505682A1 (en) * 2009-11-25 2012-10-03 JFE Steel Corporation Welded steel pipe for linepipe with superior compressive strength, and process for producing same
EP2505683A1 (en) * 2009-11-25 2012-10-03 JFE Steel Corporation Welded steel pipe for linepipe with superior compressive strength and excellent sour resistance, and process for producing same
JP2013194316A (en) * 2012-03-23 2013-09-30 Jfe Steel Corp High strength steel plate for high heat input welding excellent in material uniformity in steel plate and method for manufacturing the same
JP2013237101A (en) * 2012-04-20 2013-11-28 Kobe Steel Ltd Steel having excellent hydrogen induced cracking resistance and method for producing the same
WO2014148447A1 (en) * 2013-03-22 2014-09-25 株式会社神戸製鋼所 Steel material having superior toughness at welding heat affected zone
WO2015151469A1 (en) * 2014-03-31 2015-10-08 Ｊｆｅスチール株式会社 Steel material for highly-deformable line pipes having superior strain aging characteristics and anti-hic characteristics, method for manufacturing same, and welded steel pipe

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2017094593A1 *

Also Published As

Publication number Publication date
JP2017106107A (en) 2017-06-15
EP3385399A1 (en) 2018-10-10
WO2017094593A1 (en) 2017-06-08
KR20180085791A (en) 2018-07-27
CN108350540A (en) 2018-07-31

Similar Documents

Publication Publication Date Title
EP3561119A4 (en) Tempered martensitic steel having low yield ratio and excellent uniform elongation, and manufacturing method therefor
ZA202003349B (en) Steel sheet having excellent toughness, ductility and strength, and manufacturing method thereof
EP3272899A4 (en) Low-yield-ratio high-strength-toughness thick steel plate with excellent low-temperature impact toughness and manufacturing method therefor
EP3604591A4 (en) Martensitic stainless steel material
EP3128027A4 (en) High-strength cold rolled steel sheet having high yield ratio, and production method therefor
EP3235924A4 (en) Quenched-tempered high-strength steel with yield strength of 900 mpa to 1000 mpa grade, and manufacturing method therefor
EP3584348A4 (en) High strength steel sheet
EP3235923A4 (en) High-strength steel with yield strength of 800 mpa and production method therefor
EP3191612A4 (en) High strength austenitic stainless steel and production method thereof
EP3120941A4 (en) High toughness and high tensile strength thick steel plate and production method therefor
EP3255164A4 (en) High-strength steel sheet and production method therefor
EP3561110A4 (en) High manganese steel having superior low-temperature toughness and yield strength and manufacturing method
EP3395993A4 (en) High yield ratio type high-strength cold-rolled steel sheet and manufacturing method thereof
EP3330394A4 (en) High-strength hot-rolled steel sheet
EP3239332A4 (en) High-strength steel having superior brittle crack arrestability, and production method therefor
EP3530769A4 (en) Martensitic stainless steel sheet
EP3239330A4 (en) High-strength steel having superior brittle crack arrestability, and production method therefor
EP3239340A4 (en) Super duplex stainless steel having excellent yield strength and impact toughness and manufacturing method therefor
EP3279351A4 (en) High strength/high toughness steel sheet and method for producing same
EP3255162A4 (en) High-strength steel sheet and production method therefor
EP3287536A4 (en) Martensitic stainless steel
EP3222741A4 (en) High strength high ductility steel sheet
EP3255163A4 (en) High-strength steel sheet and production method therefor
EP3561120A4 (en) Austenite steel material having superb abrasion resistance and toughness, and method for producing same
EP3481972A4 (en) High yield strength steel

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20180621

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
A4 Supplementary search report drawn up and despatched

Effective date: 20190418

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20191119