EP3875627A4 - FERRITIC LOW CR STAINLESS STEEL EXCELLENT IN FORMABILITY AND HIGH TEMPERATURE PROPERTIES, AND METHOD FOR MAKING THE SAME - Google Patents

FERRITIC LOW CR STAINLESS STEEL EXCELLENT IN FORMABILITY AND HIGH TEMPERATURE PROPERTIES, AND METHOD FOR MAKING THE SAME Download PDF

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Publication number
EP3875627A4
EP3875627A4 EP19897222.6A EP19897222A EP3875627A4 EP 3875627 A4 EP3875627 A4 EP 3875627A4 EP 19897222 A EP19897222 A EP 19897222A EP 3875627 A4 EP3875627 A4 EP 3875627A4
Authority
EP
European Patent Office
Prior art keywords
manufacturing
high temperature
low
stainless steel
method therefor
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
EP19897222.6A
Other languages
German (de)
English (en)
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.)
Filing date
Publication date
Application filed by Posco Co Ltd filed Critical Posco Co Ltd
Publication of EP3875627A1 publication Critical patent/EP3875627A1/en
Publication of EP3875627A4 publication Critical patent/EP3875627A4/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
    • 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 FERRITIC LOW CR STAINLESS STEEL EXCELLENT IN FORMABILITY AND HIGH TEMPERATURE PROPERTIES, AND METHOD FOR MAKING THE SAME Pending EP3875627A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020180158651A KR102168829B1 (ko) 2018-12-10 2018-12-10 성형성 및 고온 특성이 우수한 저Cr 페라이트계 스테인리스강 및 그 제조방법
PCT/KR2019/002017 WO2020122320A1 (ko) 2018-12-10 2019-02-20 성형성 및 고온 특성이 우수한 저cr 페라이트계 스테인리스강 및 그 제조방법

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 FERRITIC LOW CR STAINLESS STEEL EXCELLENT IN FORMABILITY AND HIGH TEMPERATURE PROPERTIES, AND METHOD FOR MAKING THE SAME

Country Status (5)

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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102326046B1 (ko) * 2019-12-19 2021-11-15 주식회사 포스코 고온 특성 및 성형성이 향상된 저Cr 페라이트계 스테인리스강 및 그 제조방법

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140083726A (ko) * 2012-12-26 2014-07-04 주식회사 포스코 고온 내산화 및 내응축수 부식특성이 우수한 자동차 배기계용 알루미늄 도금 스테인리스강 및 그 제조방법
CN104109809A (zh) * 2014-06-20 2014-10-22 宝钢不锈钢有限公司 一种高成形性低铬铁素体不锈钢及制造方法
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 (ja) * 2015-03-26 2016-10-20 新日鐵住金ステンレス株式会社 バーリング加工部端面の耐食性に優れるフェライト系ステンレス鋼板およびその製造方法
KR101676193B1 (ko) * 2015-10-22 2016-11-15 주식회사 포스코 저크롬 페라이트계 스테인리스 냉연강판의 산세 방법

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CN100385032C (zh) * 2006-02-17 2008-04-30 山西太钢不锈钢股份有限公司 中铬含铜铁素体抗菌抗皱不锈钢板带及其制造方法
JP4624473B2 (ja) * 2008-12-09 2011-02-02 新日鐵住金ステンレス株式会社 耐銹性に優れた高純度フェライト系ステンレス鋼およびその製造方法
CN102277538B (zh) * 2011-07-27 2013-02-27 山西太钢不锈钢股份有限公司 一种含锡铁素体不锈钢板及其制造方法
KR101485641B1 (ko) * 2012-12-24 2015-01-22 주식회사 포스코 내응축수 부식특성 및 성형성이 우수한 자동차 배기계용 페라이트계 스테인리스강 및 그 제조방법
JP6006660B2 (ja) 2013-02-26 2016-10-12 新日鐵住金ステンレス株式会社 耐酸化性および耐食性に優れた自動車排気系部材用省合金型フェライト系ステンレス鋼
CN104046917B (zh) * 2013-03-13 2016-05-18 香港城市大学 富Cu纳米团簇强化的超高强度铁素体钢及其制造方法
CN107208213B (zh) * 2015-01-19 2019-01-15 新日铁住金不锈钢株式会社 加热后耐蚀性优异的排气系统构件用铁素体系不锈钢
JP6602112B2 (ja) * 2015-08-31 2019-11-06 日鉄ステンレス株式会社 耐二次加工脆性に優れた深絞り成形用高純度フェライト系ステンレス鋼板およびその製造方法
JP6261640B2 (ja) * 2016-03-30 2018-01-17 新日鐵住金ステンレス株式会社 加工性に優れた排気部品用フェライト系ステンレス鋼板、鋼管およびその製造方法
JP6519023B2 (ja) 2016-05-17 2019-05-29 Ｊｆｅスチール株式会社 厨房機器用フェライト系ステンレス鋼およびその製造方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
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 (ko) * 2012-12-26 2014-07-04 주식회사 포스코 고온 내산화 및 내응축수 부식특성이 우수한 자동차 배기계용 알루미늄 도금 스테인리스강 및 그 제조방법
CN104109809A (zh) * 2014-06-20 2014-10-22 宝钢不锈钢有限公司 一种高成形性低铬铁素体不锈钢及制造方法
JP2016183400A (ja) * 2015-03-26 2016-10-20 新日鐵住金ステンレス株式会社 バーリング加工部端面の耐食性に優れるフェライト系ステンレス鋼板およびその製造方法
KR101676193B1 (ko) * 2015-10-22 2016-11-15 주식회사 포스코 저크롬 페라이트계 스테인리스 냉연강판의 산세 방법

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2020122320A1 *

Also Published As

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

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Ipc: C22C 38/20 20060101AFI20220209BHEP

RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: POSCO HOLDINGS INC.

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: POSCO CO., LTD