EP3699314A4 - FERRITIC STAINLESS STEEL WITH EXCELLENT HOT FORMABILITY AND PROCESS FOR ITS MANUFACTURING - Google Patents

FERRITIC STAINLESS STEEL WITH EXCELLENT HOT FORMABILITY AND PROCESS FOR ITS MANUFACTURING Download PDF

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Publication number
EP3699314A4
EP3699314A4 EP18892556.4A EP18892556A EP3699314A4 EP 3699314 A4 EP3699314 A4 EP 3699314A4 EP 18892556 A EP18892556 A EP 18892556A EP 3699314 A4 EP3699314 A4 EP 3699314A4
Authority
EP
European Patent Office
Prior art keywords
manufacturing
stainless steel
ferritic stainless
excellent hot
hot formability
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
EP18892556.4A
Other languages
German (de)
French (fr)
Other versions
EP3699314A1 (en
Inventor
Jae-Hwa Lee
Mi-Nam Park
Gyu Jin 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 EP3699314A4 publication Critical patent/EP3699314A4/en
Publication of EP3699314A1 publication Critical patent/EP3699314A1/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • C22C38/18—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
    • 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
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/13—Modifying the physical properties of iron or steel by deformation by hot working
    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
    • 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
    • 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
    • C22C38/04—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
    • 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
    • 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)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Heat Treatment Of Steel (AREA)
EP18892556.4A 2017-12-22 2018-11-07 Utility ferritic stainless steel having excellent hot workability, and manufacturing method therefor Pending EP3699314A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020170178047A KR101987665B1 (en) 2017-12-22 2017-12-22 Utility ferritic stainless steel excellent in hot workability and method of manufacturing the same
PCT/KR2018/013418 WO2019124729A1 (en) 2017-12-22 2018-11-07 Utility ferritic stainless steel having excellent hot workability, and manufacturing method therefor

Publications (2)

Publication Number Publication Date
EP3699314A4 true EP3699314A4 (en) 2020-08-26
EP3699314A1 EP3699314A1 (en) 2020-08-26

Family

ID=66847309

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18892556.4A Pending EP3699314A1 (en) 2017-12-22 2018-11-07 Utility ferritic stainless steel having excellent hot workability, and manufacturing method therefor

Country Status (5)

Country Link
US (1) US20200392609A1 (en)
EP (1) EP3699314A1 (en)
KR (1) KR101987665B1 (en)
CN (1) CN111448326B (en)
WO (1) WO2019124729A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115029622B (en) * 2022-04-29 2023-05-23 武汉钢铁有限公司 High-surface-quality hot-rolled dual-phase steel and production process thereof
CN115261744B (en) * 2022-07-20 2023-10-27 山西太钢不锈钢股份有限公司 A high-toughness low-chromium ferritic stainless steel medium-thick plate and its manufacturing method
KR102890666B1 (en) * 2022-11-10 2025-11-24 현대제철 주식회사 Method for predicting occurrence of edge scab in manufacturing non oriented electrical steel sheet

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4608099A (en) * 1984-10-10 1986-08-26 Amax Inc. General purpose maintenance-free constructional steel of superior processability
KR20010002732A (en) * 1999-06-17 2001-01-15 이구택 Structural ferritic stainless steel
KR20100058852A (en) * 2008-11-25 2010-06-04 주식회사 포스코 Ferritic stainless steel with excellent formability and method of manufacturing the same
CN102899587A (en) * 2011-07-25 2013-01-30 宝山钢铁股份有限公司 Double phase stainless steel and manufacturing method thereof
KR20150074694A (en) * 2013-12-24 2015-07-02 주식회사 포스코 Ferritic stainless steel with excellent hot workability and method of manufacturing the same
US20150315686A1 (en) * 2012-12-21 2015-11-05 Posco Hot-rolled stainless steel sheet having excellent hardness and low-temperature impact properties

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63219527A (en) * 1987-03-10 1988-09-13 Sumitomo Metal Ind Ltd Manufacture of ferritic stainless steel excellent in cold workability
EP1715073B1 (en) * 2004-01-29 2014-10-22 JFE Steel Corporation Austenitic-ferritic stainless steel
KR101685825B1 (en) * 2015-06-18 2016-12-12 현대제철 주식회사 Carbon steel for machine structure and method for manufacturing thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4608099A (en) * 1984-10-10 1986-08-26 Amax Inc. General purpose maintenance-free constructional steel of superior processability
KR20010002732A (en) * 1999-06-17 2001-01-15 이구택 Structural ferritic stainless steel
KR20100058852A (en) * 2008-11-25 2010-06-04 주식회사 포스코 Ferritic stainless steel with excellent formability and method of manufacturing the same
CN102899587A (en) * 2011-07-25 2013-01-30 宝山钢铁股份有限公司 Double phase stainless steel and manufacturing method thereof
US20150315686A1 (en) * 2012-12-21 2015-11-05 Posco Hot-rolled stainless steel sheet having excellent hardness and low-temperature impact properties
KR20150074694A (en) * 2013-12-24 2015-07-02 주식회사 포스코 Ferritic stainless steel with excellent hot workability and method of manufacturing the same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2019124729A1 *

Also Published As

Publication number Publication date
WO2019124729A1 (en) 2019-06-27
EP3699314A1 (en) 2020-08-26
US20200392609A1 (en) 2020-12-17
KR101987665B1 (en) 2019-06-11
CN111448326B (en) 2022-10-28
CN111448326A (en) 2020-07-24

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Owner name: POSCO HOLDINGS INC.

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Owner name: POSCO CO., LTD