EP3822384A4 - Austenitic stainless steel having improved strength - Google Patents

Austenitic stainless steel having improved strength Download PDF

Info

Publication number
EP3822384A4
EP3822384A4 EP19849274.6A EP19849274A EP3822384A4 EP 3822384 A4 EP3822384 A4 EP 3822384A4 EP 19849274 A EP19849274 A EP 19849274A EP 3822384 A4 EP3822384 A4 EP 3822384A4
Authority
EP
European Patent Office
Prior art keywords
stainless steel
austenitic stainless
improved strength
strength
improved
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.)
Granted
Application number
EP19849274.6A
Other languages
German (de)
French (fr)
Other versions
EP3822384B8 (en
EP3822384A1 (en
EP3822384B1 (en
Inventor
Jae-Hwa Lee
Gyu Jin Jo
Young Tae Kim
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.)
Posco Holdings Inc
Original Assignee
Posco Co 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 Posco Co Ltd filed Critical Posco Co Ltd
Publication of EP3822384A1 publication Critical patent/EP3822384A1/en
Publication of EP3822384A4 publication Critical patent/EP3822384A4/en
Application granted granted Critical
Publication of EP3822384B1 publication Critical patent/EP3822384B1/en
Publication of EP3822384B8 publication Critical patent/EP3822384B8/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • C22C38/18—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
    • 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
    • C21D1/26—Methods of annealing
    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
    • 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
    • C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
    • 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
    • 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
    • C22C38/02—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
    • C22C38/18—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
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel 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
    • C22C38/40—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
    • C21D2211/001—Austenite

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Heat Treatment Of Steel (AREA)
  • Materials For Medical Uses (AREA)
EP19849274.6A 2018-08-13 2019-08-08 Austenitic stainless steel having improved strength Active EP3822384B8 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020180094523A KR102160735B1 (en) 2018-08-13 2018-08-13 Austenitic stainless steel with improved strength
PCT/KR2019/009977 WO2020036370A1 (en) 2018-08-13 2019-08-08 Austenitic stainless steel having improved strength

Publications (4)

Publication Number Publication Date
EP3822384A1 EP3822384A1 (en) 2021-05-19
EP3822384A4 true EP3822384A4 (en) 2021-09-01
EP3822384B1 EP3822384B1 (en) 2023-01-18
EP3822384B8 EP3822384B8 (en) 2023-02-22

Family

ID=69525604

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19849274.6A Active EP3822384B8 (en) 2018-08-13 2019-08-08 Austenitic stainless steel having improved strength

Country Status (6)

Country Link
US (1) US20210292877A1 (en)
EP (1) EP3822384B8 (en)
KR (1) KR102160735B1 (en)
CN (1) CN112789365B (en)
FI (1) FI3822384T3 (en)
WO (1) WO2020036370A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113151736A (en) * 2021-01-28 2021-07-23 中航上大高温合金材料有限公司 Corrosion-resistant duplex stainless steel and preparation method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150074697A (en) * 2013-12-24 2015-07-02 주식회사 포스코 Low-nickel containing stainless steels

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010083939A (en) * 1998-11-02 2001-09-03 추후제출 Cr-mn-ni-cu austenitic stainless steel
JP3696552B2 (en) * 2001-04-12 2005-09-21 日新製鋼株式会社 Soft stainless steel plate with excellent workability and cold forgeability
US8562758B2 (en) * 2004-01-29 2013-10-22 Jfe Steel Corporation Austenitic-ferritic stainless steel
PL2229463T3 (en) * 2007-12-20 2018-01-31 Ati Properties Llc Corrosion resistant lean austenitic stainless steel
US8337749B2 (en) * 2007-12-20 2012-12-25 Ati Properties, Inc. Lean austenitic stainless steel
KR101056235B1 (en) * 2008-11-25 2011-08-11 주식회사 포스코 Prediction of Material Properties of Austenitic Stainless Steel Cold Rolled Products
SE533635C2 (en) * 2009-01-30 2010-11-16 Sandvik Intellectual Property Austenitic stainless steel alloy with low nickel content, and article thereof
KR20120132691A (en) * 2010-04-29 2012-12-07 오또꿈뿌 오와이제이 Method for manufacturing and utilizing ferritic-austenitic stainless steel with high formability
KR101632516B1 (en) * 2011-10-21 2016-06-21 닛폰 스틸 앤드 스미킨 스테인레스 스틸 코포레이션 Duplex stainless steel, duplex stainless steel slab, and duplex stainless steel material
WO2013107922A1 (en) * 2012-01-20 2013-07-25 Jl Materials Technology Oy An austenitic stainless steel product and a method for manufacturing same
JP2014001422A (en) 2012-06-18 2014-01-09 Nippon Steel & Sumitomo Metal Austenitic stainless steel plate and manufacturing method for the same
CN103627970A (en) * 2013-10-30 2014-03-12 振石集团东方特钢股份有限公司 Vanadium-containing austenitic stainless steel
FI125105B (en) * 2013-11-04 2015-06-15 Outokumpu Oy Austenitic stainless steel with grain boundary corrosion and method of manufacture
JP6438253B2 (en) 2014-09-26 2018-12-12 エア・ウォーターＮｖ株式会社 GAME STEEL BALL AND MANUFACTURING METHOD THEREOF
JP6763759B2 (en) * 2015-11-20 2020-09-30 日本精線株式会社 Duplex stainless steel wire with excellent magnetic properties, and magnetic wire mesh products for sieves, net conveyors, or filters
KR101952808B1 (en) * 2017-08-22 2019-02-28 주식회사포스코 Low nickel austenitic stainless steel having excellent hot workability and hydrogen embrittlement resistance

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150074697A (en) * 2013-12-24 2015-07-02 주식회사 포스코 Low-nickel containing stainless steels

Also Published As

Publication number Publication date
FI3822384T3 (en) 2023-03-20
EP3822384B8 (en) 2023-02-22
KR20200018995A (en) 2020-02-21
EP3822384A1 (en) 2021-05-19
US20210292877A1 (en) 2021-09-23
CN112789365A (en) 2021-05-11
CN112789365B (en) 2022-09-27
WO2020036370A1 (en) 2020-02-20
KR102160735B1 (en) 2020-09-28
EP3822384B1 (en) 2023-01-18

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