EP4265799A4 - AUSTENITIC STAINLESS STEEL WITH IMPROVED CORROSION RESISTANCE AND MACHINES AND METHOD FOR MANUFACTURING THEM - Google Patents

AUSTENITIC STAINLESS STEEL WITH IMPROVED CORROSION RESISTANCE AND MACHINES AND METHOD FOR MANUFACTURING THEM

Info

Publication number
EP4265799A4
EP4265799A4 EP21911342.0A EP21911342A EP4265799A4 EP 4265799 A4 EP4265799 A4 EP 4265799A4 EP 21911342 A EP21911342 A EP 21911342A EP 4265799 A4 EP4265799 A4 EP 4265799A4
Authority
EP
European Patent Office
Prior art keywords
machines
manufacturing
stainless steel
corrosion resistance
austenitic stainless
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
EP21911342.0A
Other languages
German (de)
French (fr)
Other versions
EP4265799A1 (en
Inventor
Hyung-Gu Kang
Mi-Nam Park
Youngjun Kim
Youngjin Kwon
Gyujin Jo
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 EP4265799A1 publication Critical patent/EP4265799A1/en
Publication of EP4265799A4 publication Critical patent/EP4265799A4/en
Pending 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
    • C22C38/18—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
    • 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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • 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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys 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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties of ferrous metals or ferrous alloys 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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247—Modifying the physical properties of ferrous metals or ferrous alloys 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 of ferrous metals or ferrous alloys 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
    • 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
    • C22C38/02—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
    • C22C38/04—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
    • C22C38/42—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
    • 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
    • C21D2211/004—Dispersions; Precipitations

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)
EP21911342.0A 2020-12-21 2021-12-10 AUSTENITIC STAINLESS STEEL WITH IMPROVED CORROSION RESISTANCE AND MACHINES AND METHOD FOR MANUFACTURING THEM Pending EP4265799A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020200179748A KR102570524B1 (en) 2020-12-21 2020-12-21 Austenitic stainless steel with improved corrosion resistance and machinability and method for manufacturing the same
PCT/KR2021/018701 WO2022139275A1 (en) 2020-12-21 2021-12-10 Austenitic stainless steel with improved corrosion resistance and machinability and method for manufacturing same

Publications (2)

Publication Number Publication Date
EP4265799A1 EP4265799A1 (en) 2023-10-25
EP4265799A4 true EP4265799A4 (en) 2025-10-29

Family

ID=82159585

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21911342.0A Pending EP4265799A4 (en) 2020-12-21 2021-12-10 AUSTENITIC STAINLESS STEEL WITH IMPROVED CORROSION RESISTANCE AND MACHINES AND METHOD FOR MANUFACTURING THEM

Country Status (6)

Country Link
US (1) US20240309500A1 (en)
EP (1) EP4265799A4 (en)
JP (1) JP7607775B2 (en)
KR (1) KR102570524B1 (en)
CN (1) CN116848283B (en)
WO (1) WO2022139275A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102497442B1 (en) * 2020-11-25 2023-02-08 주식회사 포스코 Austenitic stainless steel for polymer fuel cell separator with improved contact resistance and manufacturing method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH073404A (en) * 1993-06-22 1995-01-06 Nkk Corp Austenitic stainless steel with excellent cleanliness and weldability
JPH07197205A (en) * 1993-12-29 1995-08-01 Nkk Corp Austenitic stainless steel sheet and method for producing the same
JP2003073785A (en) * 2001-08-31 2003-03-12 National Institute For Materials Science Austenitic stainless heat-resistant steel

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02209454A (en) * 1989-02-08 1990-08-20 Nkk Corp free-cutting stainless steel
JPH07113144A (en) * 1993-10-18 1995-05-02 Nisshin Steel Co Ltd Nonmagnetic stainless steel excellent in surface property and production thereof
KR100411286B1 (en) * 1996-12-24 2004-04-03 주식회사 포스코 High strength austenitic stainless steel with excellent corrosion resistance and weather resistance and steel sheet manufacturing method using the same
JP2003129191A (en) * 2001-10-24 2003-05-08 Nisshin Steel Co Ltd Boron nitride-containing stainless steel material with free-machinability, and manufacturing method therefor
JP4850444B2 (en) * 2005-06-27 2012-01-11 新日鐵住金ステンレス株式会社 High-strength, high-corrosion-resistant, inexpensive austenitic stainless steel wire with excellent ductility
JP2007284768A (en) * 2006-04-19 2007-11-01 Daido Steel Co Ltd Austenitic stainless steel
JP5142289B2 (en) * 2006-07-31 2013-02-13 独立行政法人物質・材料研究機構 Free-cutting stainless steel and manufacturing method thereof
FI124993B (en) * 2012-09-27 2015-04-15 Outokumpu Oy Austenitic stainless steel
JP6347864B1 (en) * 2017-03-24 2018-06-27 日新製鋼株式会社 Method for producing austenitic stainless steel slab
KR102015510B1 (en) * 2017-12-06 2019-08-28 주식회사 포스코 Non-magnetic austenitic stainless steel with excellent corrosion resistance and manufacturing method thereof
JP7077033B2 (en) 2018-02-02 2022-05-30 日鉄ステンレス株式会社 Manufacturing method of the joint
KR102160735B1 (en) * 2018-08-13 2020-09-28 주식회사 포스코 Austenitic stainless steel with improved strength

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH073404A (en) * 1993-06-22 1995-01-06 Nkk Corp Austenitic stainless steel with excellent cleanliness and weldability
JPH07197205A (en) * 1993-12-29 1995-08-01 Nkk Corp Austenitic stainless steel sheet and method for producing the same
JP2003073785A (en) * 2001-08-31 2003-03-12 National Institute For Materials Science Austenitic stainless heat-resistant steel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2022139275A1 *

Also Published As

Publication number Publication date
EP4265799A1 (en) 2023-10-25
KR20220089276A (en) 2022-06-28
KR102570524B1 (en) 2023-08-24
JP7607775B2 (en) 2024-12-27
JP2024500905A (en) 2024-01-10
CN116848283B (en) 2026-04-07
US20240309500A1 (en) 2024-09-19
WO2022139275A1 (en) 2022-06-30
CN116848283A (en) 2023-10-03

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