EP3831978A4 - Ti- and nb-added ferritic stainless steel excellent in low-temperature toughness of welds - Google Patents

Ti- and nb-added ferritic stainless steel excellent in low-temperature toughness of welds Download PDF

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Publication number
EP3831978A4
EP3831978A4 EP18928736.0A EP18928736A EP3831978A4 EP 3831978 A4 EP3831978 A4 EP 3831978A4 EP 18928736 A EP18928736 A EP 18928736A EP 3831978 A4 EP3831978 A4 EP 3831978A4
Authority
EP
European Patent Office
Prior art keywords
welds
low
stainless steel
ferritic stainless
temperature 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.)
Withdrawn
Application number
EP18928736.0A
Other languages
German (de)
French (fr)
Other versions
EP3831978A1 (en
Inventor
Jong Chul Kim
Wan-Yi KIM
Il Chan JUNG
Jin-Suk Kim
Deok Chan Ahn
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 EP3831978A1 publication Critical patent/EP3831978A1/en
Publication of EP3831978A4 publication Critical patent/EP3831978A4/en
Withdrawn legal-status Critical Current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
    • C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
    • 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
    • C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/005—Manufacture of stainless steel
    • 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
    • C21D8/10—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
    • C21D8/105—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies of ferrous 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
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • 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
EP18928736.0A 2018-08-03 2018-11-02 Ti- and nb-added ferritic stainless steel excellent in low-temperature toughness of welds Withdrawn EP3831978A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020180090874A KR20200015265A (en) 2018-08-03 2018-08-03 FERRITIC STAINLESS STEEL CONTAINING Ti AND Nb HAVING EXCELLENT LOW TEMPERATURE TOUGHNESS OF WELDED JOINT
PCT/KR2018/013229 WO2020027380A1 (en) 2018-08-03 2018-11-02 Ti- and nb-added ferritic stainless steel excellent in low-temperature toughness of welds

Publications (2)

Publication Number Publication Date
EP3831978A1 EP3831978A1 (en) 2021-06-09
EP3831978A4 true EP3831978A4 (en) 2021-09-08

Family

ID=69231991

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18928736.0A Withdrawn EP3831978A4 (en) 2018-08-03 2018-11-02 Ti- and nb-added ferritic stainless steel excellent in low-temperature toughness of welds

Country Status (5)

Country Link
US (1) US20210310105A1 (en)
EP (1) EP3831978A4 (en)
KR (1) KR20200015265A (en)
CN (1) CN112654727A (en)
WO (1) WO2020027380A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5685923A (en) * 1994-12-28 1997-11-11 Nippon Steel Corporation Ferritic stainless steel bellows
US20040154708A1 (en) * 2002-03-27 2004-08-12 Akihiko Takahashi Cast piece and sheet of ferritic stainless steel, and method for production thereof
KR20100077244A (en) * 2008-12-29 2010-07-08 주식회사 포스코 Ferritic stainless steel having excellent surface quality and manufacturing method thereof
KR20150000893A (en) * 2013-03-29 2015-01-05 닛폰 스틸 앤드 스미킨 스테인레스 스틸 코포레이션 Ferritic stainless-steel wire with excellent cold forgeability and machinability
KR20180000782A (en) * 2016-06-23 2018-01-04 주식회사 포스코 Ferritic stainless steel having excellent low temperature toughness of welded joint

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08333656A (en) * 1995-06-05 1996-12-17 Nippon Steel Corp Ferritic stainless steel tube for bellows
KR20000001715A (en) 1998-06-12 2000-01-15 조현정 Management system of medicines stockpile
JP4055252B2 (en) 1998-06-18 2008-03-05 Ｊｆｅスチール株式会社 Method for melting chromium-containing steel
JP3448537B2 (en) 2000-03-10 2003-09-22 新日本製鐵株式会社 Ferritic stainless steel with excellent weldability
JP3837083B2 (en) * 2002-04-16 2006-10-25 新日本製鐵株式会社 One-pass large heat input welding method with excellent weld heat-affected zone toughness
JP4309140B2 (en) * 2003-01-15 2009-08-05 新日鐵住金ステンレス株式会社 Ferritic stainless steel for automotive exhaust system equipment
KR100718410B1 (en) * 2005-12-09 2007-05-14 가부시키가이샤 고베 세이코쇼 Steel sheet excellent in low-temperature toughness property in welded joint
KR20070068211A (en) * 2005-12-26 2007-06-29 주식회사 포스코 Manufacturing method of steel plate for high heat input welding and structure manufactured by the heat input welding
KR100856306B1 (en) * 2006-12-11 2008-09-03 주식회사 포스코 Ferritic stainless steel having excellent low temperature formability of welded zone
JP2009091654A (en) * 2007-09-18 2009-04-30 Jfe Steel Kk Ferritic stainless steel having excellent weldability
JP5242495B2 (en) * 2009-05-08 2013-07-24 新日鐵住金ステンレス株式会社 Ferritic stainless steel wire for boss materials with excellent high temperature durability
KR101239555B1 (en) 2009-12-24 2013-03-06 주식회사 포스코 The method for manufacturing the Ti bearing ferritic stainless steel improved the equiaxed structure ratio

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5685923A (en) * 1994-12-28 1997-11-11 Nippon Steel Corporation Ferritic stainless steel bellows
US20040154708A1 (en) * 2002-03-27 2004-08-12 Akihiko Takahashi Cast piece and sheet of ferritic stainless steel, and method for production thereof
KR20100077244A (en) * 2008-12-29 2010-07-08 주식회사 포스코 Ferritic stainless steel having excellent surface quality and manufacturing method thereof
KR20150000893A (en) * 2013-03-29 2015-01-05 닛폰 스틸 앤드 스미킨 스테인레스 스틸 코포레이션 Ferritic stainless-steel wire with excellent cold forgeability and machinability
KR20180000782A (en) * 2016-06-23 2018-01-04 주식회사 포스코 Ferritic stainless steel having excellent low temperature toughness of welded joint

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2020027380A1 *

Also Published As

Publication number Publication date
WO2020027380A1 (en) 2020-02-06
KR20200015265A (en) 2020-02-12
US20210310105A1 (en) 2021-10-07
EP3831978A1 (en) 2021-06-09
CN112654727A (en) 2021-04-13

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