EP4023785A4 - Highly corrosion-resistant austenitic stainless steel having excellent impact toughness and hot workability - Google Patents

Highly corrosion-resistant austenitic stainless steel having excellent impact toughness and hot workability Download PDF

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Publication number
EP4023785A4
EP4023785A4 EP20861333.1A EP20861333A EP4023785A4 EP 4023785 A4 EP4023785 A4 EP 4023785A4 EP 20861333 A EP20861333 A EP 20861333A EP 4023785 A4 EP4023785 A4 EP 4023785A4
Authority
EP
European Patent Office
Prior art keywords
stainless steel
austenitic stainless
excellent impact
hot workability
impact toughness
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.)
Pending
Application number
EP20861333.1A
Other languages
German (de)
French (fr)
Other versions
EP4023785A1 (en
Inventor
Jisoo Kim
Gyujin JO
Manjae LEE
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 EP4023785A1 publication Critical patent/EP4023785A1/en
Publication of EP4023785A4 publication Critical patent/EP4023785A4/en
Pending legal-status Critical Current

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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
    • C22C38/004—Very low carbon steels, i.e. having a carbon content of less than 0,01%
    • 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
    • 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
    • C21D8/0221—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
    • 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
    • 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
    • C22C38/04—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
    • C22C38/06—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
    • C22C38/18—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
    • 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
    • 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
    • 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
EP20861333.1A 2019-09-04 2020-07-07 Highly corrosion-resistant austenitic stainless steel having excellent impact toughness and hot workability Pending EP4023785A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020190109377A KR20210028382A (en) 2019-09-04 2019-09-04 High corrosion resistant austenitic stainless steel with excellent impact toughness and hot workability
PCT/KR2020/008864 WO2021045371A1 (en) 2019-09-04 2020-07-07 Highly corrosion-resistant austenitic stainless steel having excellent impact toughness and hot workability

Publications (2)

Publication Number Publication Date
EP4023785A1 EP4023785A1 (en) 2022-07-06
EP4023785A4 true EP4023785A4 (en) 2022-11-09

Family

ID=74852400

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20861333.1A Pending EP4023785A4 (en) 2019-09-04 2020-07-07 Highly corrosion-resistant austenitic stainless steel having excellent impact toughness and hot workability

Country Status (5)

Country Link
EP (1) EP4023785A4 (en)
JP (1) JP7271789B2 (en)
KR (1) KR20210028382A (en)
CN (1) CN114514333A (en)
WO (1) WO2021045371A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6447817A (en) * 1987-08-13 1989-02-22 Nippon Steel Corp Production of austenitic stainless steel having excellent seawater corrosion resistance
JPS6468450A (en) * 1987-09-09 1989-03-14 Nippon Kokan Kk Austenitic stainless steel for seawater corrosion resistance
EP0320820A1 (en) * 1987-12-12 1989-06-21 Nippon Steel Corporation Process for preparation of austenitic stainless steel having excellent seawater resistance
JPH07157851A (en) * 1994-06-07 1995-06-20 Nippon Yakin Kogyo Co Ltd Corrosion resistant austenitic stainless steel excellent in hot workability
JP2005133144A (en) * 2003-10-30 2005-05-26 Nippon Steel & Sumikin Stainless Steel Corp Austenitic stainless steel having excellent hot workability and corrosion resistance
WO2016076254A1 (en) * 2014-11-11 2016-05-19 新日鐵住金ステンレス株式会社 High-corrosion-resistance austenitic stainless steel sheet

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100215727B1 (en) * 1996-09-18 1999-08-16 박용수 Super duplex stainless steel with high wear-resistance
KR19990005962A (en) 1997-06-30 1999-01-25 김영환 Mobile Call Path Implementation Method in Digital Mobile Communication System
FR2780735B1 (en) * 1998-07-02 2001-06-22 Usinor AUSTENITIC STAINLESS STEEL WITH LOW NICKEL CONTENT AND CORROSION RESISTANT
KR100327618B1 (en) 1999-09-08 2002-03-14 윤덕용 W-containing duplex stainless steel casting alloy having high corrosion resistance, good structure stability
KR20010038199A (en) 1999-10-22 2001-05-15 장용균 Biaxially oriented strong polyester film
JP3828067B2 (en) 2002-11-08 2006-09-27 新日鐵住金ステンレス株式会社 High corrosion resistance austenitic stainless steel with good cold workability
JP4437036B2 (en) * 2003-12-26 2010-03-24 パナソニック株式会社 Case material for storage cells
SE528008C2 (en) * 2004-12-28 2006-08-01 Outokumpu Stainless Ab Austenitic stainless steel and steel product
JP4494237B2 (en) * 2005-02-02 2010-06-30 新日鐵住金ステンレス株式会社 Austenitic stainless steel material excellent in corrosion resistance, toughness and hot workability, and method for producing the same
CN101613834A (en) 2008-06-25 2009-12-30 宝山钢铁股份有限公司 Peracidity deep-well Fe based austenite alloy tubing and casing and manufacture method
FI125854B (en) 2011-11-04 2016-03-15 Outokumpu Oy Duplex stainless steel
JP5850763B2 (en) * 2012-02-27 2016-02-03 日新製鋼株式会社 Stainless steel diffusion bonding products

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6447817A (en) * 1987-08-13 1989-02-22 Nippon Steel Corp Production of austenitic stainless steel having excellent seawater corrosion resistance
JPS6468450A (en) * 1987-09-09 1989-03-14 Nippon Kokan Kk Austenitic stainless steel for seawater corrosion resistance
EP0320820A1 (en) * 1987-12-12 1989-06-21 Nippon Steel Corporation Process for preparation of austenitic stainless steel having excellent seawater resistance
JPH07157851A (en) * 1994-06-07 1995-06-20 Nippon Yakin Kogyo Co Ltd Corrosion resistant austenitic stainless steel excellent in hot workability
JP2005133144A (en) * 2003-10-30 2005-05-26 Nippon Steel & Sumikin Stainless Steel Corp Austenitic stainless steel having excellent hot workability and corrosion resistance
WO2016076254A1 (en) * 2014-11-11 2016-05-19 新日鐵住金ステンレス株式会社 High-corrosion-resistance austenitic stainless steel sheet

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2021045371A1 *

Also Published As

Publication number Publication date
JP7271789B2 (en) 2023-05-11
CN114514333A (en) 2022-05-17
JP2022546776A (en) 2022-11-08
EP4023785A1 (en) 2022-07-06
KR20210028382A (en) 2021-03-12
WO2021045371A1 (en) 2021-03-11

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