EP3875627A4 - Low-cr ferritic stainless steel with excellent formability and high temperature properties, and manufacturing method therefor - Google Patents

Low-cr ferritic stainless steel with excellent formability and high temperature properties, and manufacturing method therefor Download PDF

Info

Publication number: EP3875627A4
Authority: EP; European Patent Office
Prior art keywords: manufacturing; high temperature; low; stainless steel; method therefor
Prior art date: 2018-12-10
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

EP19897222.6A

Other languages

German (de)

French (fr)

Other versions

EP3875627A1 (en

Inventor

Il Chan JUNG

Jin Woo Lim

Han Jin Ryu

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.)

2018-12-10

Filing date

2019-02-20

Publication date

2022-03-16

2019-02-20 Application filed by Posco Co Ltd filed Critical Posco Co Ltd

2021-09-08 Publication of EP3875627A1 publication Critical patent/EP3875627A1/en

2022-03-16 Publication of EP3875627A4 publication Critical patent/EP3875627A4/en

Status Pending legal-status Critical Current

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
- 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
- C21D1/18—Hardening; Quenching with or without subsequent tempering
- 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
- C21D1/18—Hardening; Quenching with or without subsequent tempering
- C21D1/19—Hardening; Quenching with or without subsequent tempering by interrupted quenching
- 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
- C21D6/002—Heat treatment of ferrous alloys containing Cr
- 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
- C21D6/005—Heat treatment of ferrous alloys containing Mn
- 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
- C21D6/008—Heat treatment of ferrous alloys containing Si
- 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
- C21D6/02—Hardening by precipitation
- 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
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0236—Cold 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
- 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
- C21D8/0273—Final recrystallisation 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
- 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
- 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
- C22C38/008—Ferrous alloys, e.g. steel alloys containing tin
- 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
- C22C38/06—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
- C22C38/20—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
- C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/004—Dispersions; Precipitations
- 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

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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)

EP19897222.6A 2018-12-10 2019-02-20 Low-cr ferritic stainless steel with excellent formability and high temperature properties, and manufacturing method therefor Pending EP3875627A4 (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
KR1020180158651A KR102168829B1 (en)	2018-12-10	2018-12-10	LOW-Cr FERRITIC STAINLESS STEEL WITH EXCELLENT FORMABILITY AND HIGH TEMPERATURE PROPERTIES AND MANUFACTURING METHOD THEREOF
PCT/KR2019/002017 WO2020122320A1 (en)	2018-12-10	2019-02-20	Low-cr ferritic stainless steel with excellent formability and high temperature properties, and manufacturing method therefor

Publications (2)

Publication Number	Publication Date
EP3875627A1 EP3875627A1 (en)	2021-09-08
EP3875627A4 true EP3875627A4 (en)	2022-03-16

Family

ID=71076099

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP19897222.6A Pending EP3875627A4 (en)	2018-12-10	2019-02-20	Low-cr ferritic stainless steel with excellent formability and high temperature properties, and manufacturing method therefor

Country Status (5)

Country	Link
EP (1)	EP3875627A4 (en)
JP (1)	JP7174853B2 (en)
KR (1)	KR102168829B1 (en)
CN (1)	CN113166891A (en)
WO (1)	WO2020122320A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
KR102326046B1 (en) *	2019-12-19	2021-11-15	주식회사 포스코	LOW-Cr FERRITIC STAINLESS STEEL WITH IMPROVED HIGH TEMPERATURE CHARACTERISTICS AND FORMABILITY AND MANUFACTURING METHOD THEREOF

Citations (5)

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KR20140083726A (en) *	2012-12-26	2014-07-04	주식회사 포스코	Al coated stainless steel for automotive exhaust system with excellent high temperature oxidation resistance and excellent corrosion resistance for water condensation, and the method of manufacturing the same
CN104109809A (en) *	2014-06-20	2014-10-22	宝钢不锈钢有限公司	High formability and low-chromium ferrite stainless steel and making method thereof
US20150345361A1 (en) *	2012-12-24	2015-12-03	Posco	Ferritic Stainless Steel for Automotive Exhaust System, Which Have Excellent Corrosion Resistance Against Condensate, Moldability, and High-Temperature Oxidation Resistance, and Method for Manufacturing Same
JP2016183400A (en) *	2015-03-26	2016-10-20	新日鐵住金ステンレス株式会社	Ferritic stainless steel sheet with excellent corrosion resistance on end face of burring part and method for producing the same
KR101676193B1 (en) *	2015-10-22	2016-11-15	주식회사 포스코	Pickling method for low-chromium ferritic stainless cold steel strip

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CN100385032C (en) *	2006-02-17	2008-04-30	山西太钢不锈钢股份有限公司	Medium chromium copper-containing ferrite antibacterial anti-wrinkle stainless steel strip and its manufacturing method
JP4624473B2 (en) *	2008-12-09	2011-02-02	新日鐵住金ステンレス株式会社	High purity ferritic stainless steel with excellent weather resistance and method for producing the same
CN102277538B (en) *	2011-07-27	2013-02-27	山西太钢不锈钢股份有限公司	Tin-containing ferrite stainless steel plate and manufacturing method thereof
KR101485641B1 (en) *	2012-12-24	2015-01-22	주식회사 포스코	Ferritic stainless steel for automotive exhaust system with excellent corrosion resistance for water condensation and formability and the method of manufacturing the same
JP6006660B2 (en)	2013-02-26	2016-10-12	新日鐵住金ステンレス株式会社	Alloy-saving ferritic stainless steel with excellent oxidation resistance and corrosion resistance for automotive exhaust system parts
CN104046917B (en) *	2013-03-13	2016-05-18	香港城市大学	Cu-rich nanocluster reinforced ultrahigh-strength ferritic steel and manufacturing method thereof
EP3249067B1 (en) *	2015-01-19	2020-11-11	Nippon Steel & Sumikin Stainless Steel Corporation	Ferritic stainless steel for exhaust system member having excellent corrosion resistance after heating
JP6602112B2 (en) *	2015-08-31	2019-11-06	日鉄ステンレス株式会社	High purity ferritic stainless steel sheet for deep drawing with excellent secondary work brittleness resistance and method for producing the same
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JP6519023B2 (en)	2016-05-17	2019-05-29	Ｊｆｅスチール株式会社	Ferritic stainless steel for kitchen equipment and method of manufacturing the same

2018
- 2018-12-10 KR KR1020180158651A patent/KR102168829B1/en active Active
2019
- 2019-02-20 CN CN201980081706.6A patent/CN113166891A/en active Pending
- 2019-02-20 WO PCT/KR2019/002017 patent/WO2020122320A1/en not_active Ceased
- 2019-02-20 JP JP2021532855A patent/JP7174853B2/en active Active
- 2019-02-20 EP EP19897222.6A patent/EP3875627A4/en active Pending

Patent Citations (5)

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Publication number	Priority date	Publication date	Assignee	Title
US20150345361A1 (en) *	2012-12-24	2015-12-03	Posco	Ferritic Stainless Steel for Automotive Exhaust System, Which Have Excellent Corrosion Resistance Against Condensate, Moldability, and High-Temperature Oxidation Resistance, and Method for Manufacturing Same
KR20140083726A (en) *	2012-12-26	2014-07-04	주식회사 포스코	Al coated stainless steel for automotive exhaust system with excellent high temperature oxidation resistance and excellent corrosion resistance for water condensation, and the method of manufacturing the same
CN104109809A (en) *	2014-06-20	2014-10-22	宝钢不锈钢有限公司	High formability and low-chromium ferrite stainless steel and making method thereof
JP2016183400A (en) *	2015-03-26	2016-10-20	新日鐵住金ステンレス株式会社	Ferritic stainless steel sheet with excellent corrosion resistance on end face of burring part and method for producing the same
KR101676193B1 (en) *	2015-10-22	2016-11-15	주식회사 포스코	Pickling method for low-chromium ferritic stainless cold steel strip

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Also Published As

Publication number	Publication date
CN113166891A (en)	2021-07-23
EP3875627A1 (en)	2021-09-08
WO2020122320A1 (en)	2020-06-18
JP2022513747A (en)	2022-02-09
KR20200071212A (en)	2020-06-19
JP7174853B2 (en)	2022-11-17
KR102168829B1 (en)	2020-10-22

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2021-08-06	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
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2021-09-08	17P	Request for examination filed	Effective date: 20210601
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2022-03-16	RIC1	Information provided on ipc code assigned before grant	Ipc: C21D 1/19 20060101ALI20220209BHEP Ipc: C21D 1/18 20060101ALI20220209BHEP Ipc: C21D 6/00 20060101ALI20220209BHEP Ipc: C21D 6/02 20060101ALI20220209BHEP Ipc: C21D 8/02 20060101ALI20220209BHEP Ipc: C21D 9/46 20060101ALI20220209BHEP Ipc: C22C 38/06 20060101ALI20220209BHEP Ipc: C22C 38/04 20060101ALI20220209BHEP Ipc: C22C 38/02 20060101ALI20220209BHEP Ipc: C22C 38/00 20060101ALI20220209BHEP Ipc: C22C 38/28 20060101ALI20220209BHEP Ipc: C22C 38/20 20060101AFI20220209BHEP
2022-11-23	RAP3	Party data changed (applicant data changed or rights of an application transferred)	Owner name: POSCO HOLDINGS INC.
2023-02-08	RAP1	Party data changed (applicant data changed or rights of an application transferred)	Owner name: POSCO CO., LTD