EP3889296C0 - High-strength steel sheet having excellent ductility and low-temperature toughness and method for manufacturing thereof - Google Patents

High-strength steel sheet having excellent ductility and low-temperature toughness and method for manufacturing thereof

Info

Publication number: EP3889296C0
Authority: EP; European Patent Office
Prior art keywords: manufacturing; low; steel sheet; strength steel; temperature toughness
Prior art date: 2018-11-29
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.): Active

Application number

EP19891370.9A

Other languages

German (de)

French (fr)

Other versions

EP3889296B1 (en

EP3889296A4 (en

EP3889296A2 (en

Inventor

Sang Ho Kim

Ki-Hyun Bang

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.)

2018-11-29

Filing date

2019-11-29

Publication date

2023-10-18

2019-11-29 Application filed by Posco Co Ltd filed Critical Posco Co Ltd

2021-10-06 Publication of EP3889296A2 publication Critical patent/EP3889296A2/en

2021-11-03 Publication of EP3889296A4 publication Critical patent/EP3889296A4/en

2023-10-18 Application granted granted Critical

2023-10-18 Publication of EP3889296B1 publication Critical patent/EP3889296B1/en

2023-10-18 Publication of EP3889296C0 publication Critical patent/EP3889296C0/en

Status Active legal-status Critical Current

2039-11-29 Anticipated expiration legal-status Critical

Links

229910000831 Steel Inorganic materials 0.000 title 1
238000004519 manufacturing process Methods 0.000 title 1
238000000034 method Methods 0.000 title 1
239000010959 steel Substances 0.000 title 1

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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/02—Hardening articles or materials formed by forging or rolling, with no further heating beyond that required for the formation
- 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
- C21D8/0226—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 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
- C21D8/0263—Modifying the physical properties 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
- 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
- C22C38/06—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
- C22C38/08—Ferrous alloys, e.g. steel alloys containing 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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
- 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
- C22C38/14—Ferrous alloys, e.g. steel alloys containing 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
- C21D2211/002—Bainite
- 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
- 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
- C21D2211/009—Pearlite

Landscapes

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 Steel (AREA)

EP19891370.9A 2018-11-29 2019-11-29 High-strength steel sheet having excellent ductility and low-temperature toughness and method for manufacturing thereof Active EP3889296B1 (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
KR1020180150707A KR102164112B1 (en)	2018-11-29	2018-11-29	High-strength steel sheet having excellent ductility and low-temperature toughness and method for manufacturing thereof
PCT/KR2019/016692 WO2020111856A2 (en)	2018-11-29	2019-11-29	High-strength steel sheet having excellent ductility and low-temperature toughness and method for manufacturing thereof

Publications (4)

Publication Number	Publication Date
EP3889296A2 EP3889296A2 (en)	2021-10-06
EP3889296A4 EP3889296A4 (en)	2021-11-03
EP3889296B1 EP3889296B1 (en)	2023-10-18
EP3889296C0 true EP3889296C0 (en)	2023-10-18

Family

ID=70852022

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP19891370.9A Active EP3889296B1 (en)	2018-11-29	2019-11-29	High-strength steel sheet having excellent ductility and low-temperature toughness and method for manufacturing thereof

Country Status (6)

Country	Link
US (1)	US20220042132A1 (en)
EP (1)	EP3889296B1 (en)
JP (1)	JP7221475B6 (en)
KR (1)	KR102164112B1 (en)
CN (1)	CN113166885B (en)
WO (1)	WO2020111856A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
KR102484998B1 (en) *	2020-12-11	2023-01-05	주식회사 포스코	High strength steel sheet having excellent ductility and method for manufacturing thereof
CN113061811A (en) *	2021-03-17	2021-07-02	攀钢集团江油长城特殊钢有限公司	LNG (liquefied Natural gas) marine structural steel and preparation method thereof
JPWO2023162190A1 (en) *	2022-02-28	2023-08-31

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5582A (en) *	1978-12-26	1980-01-05	Setsuo Kuroki	Cigarette pipe
JPS62130216A (en) *	1985-12-02	1987-06-12	Kobe Steel Ltd	Production of accelerated cooling type thick, high toughness, high tensile steel sheet
JP3849244B2 (en) *	1997-09-16	2006-11-22	Ｊｆｅスチール株式会社	Steel material excellent in ductile crack growth resistance under repeated large deformation and its manufacturing method
JP3434445B2 (en) *	1997-12-26	2003-08-11	新日本製鐵株式会社	Steel plate for hull with excellent shock absorption capacity
JP3848091B2 (en)	2001-02-28	2006-11-22	株式会社神戸製鋼所	Steel sheet with less toughness deterioration due to strain aging
KR20070003918A (en) *	2004-03-11	2007-01-05	신닛뽄세이테쯔 카부시키카이샤	Steel plate excellent in machinability, toughness and weldability, and method for production thereof
JP4626394B2 (en)	2005-05-18	2011-02-09	Ｊｆｅスチール株式会社	Manufacturing method of thick steel plate with excellent low temperature toughness
ATE366058T1 (en)	2005-06-06	2007-07-15	Swatch Group Man Serv Ag	NON-EXPANDABLE LINK BRACELET
JP4728710B2 (en) *	2005-07-01	2011-07-20	新日本製鐵株式会社	Hot-rolled steel sheet having excellent workability and manufacturing method thereof
JP4476923B2 (en) *	2005-12-15	2010-06-09	株式会社神戸製鋼所	Steel sheet with excellent impact absorption and base metal toughness
JP4985086B2 (en) *	2006-12-28	2012-07-25	Ｊｆｅスチール株式会社	High tensile thick steel plate with excellent brittle crack propagation stopping characteristics and method for producing the same
US8647564B2 (en)	2007-12-04	2014-02-11	Posco	High-strength steel sheet with excellent low temperature toughness and manufacturing thereof
KR100957962B1 (en) *	2007-12-26	2010-05-17	주식회사 포스코	Steel for a structure having excellent low temperature toughnetss and tensile strength of heat affected zone and manufacturing method for the same
CA2832021C (en)	2011-08-23	2014-11-18	Nippon Steel & Sumitomo Metal Corporation	Thick wall electric resistance welded steel pipe and method of production of same
JP5953952B2 (en)	2011-11-30	2016-07-20	Ｊｆｅスチール株式会社	Steel material excellent in impact resistance and method for producing the same
KR101344610B1 (en) *	2012-02-28	2013-12-26	현대제철 주식회사	Steel sheet and method of manufacturing the same
JP5516659B2 (en) *	2012-06-28	2014-06-11	Ｊｆｅスチール株式会社	High-strength ERW pipe excellent in long-term softening resistance in the medium temperature range and its manufacturing method
KR101536387B1 (en) *	2012-12-27	2015-07-13	주식회사 포스코	High-strength steel sheet having superior cryogenic temperature toughness and low yield ratio property and manufacturing method thereof
KR101482359B1 (en) *	2012-12-27	2015-01-13	주식회사 포스코	Method for manufacturing high strength steel plate having excellent toughness and low-yield ratio property
JP5994819B2 (en)	2014-05-30	2016-09-21	新日鐵住金株式会社	Steel plate with excellent impact resistance and method for producing the same
JP6676973B2 (en) *	2016-01-13	2020-04-08	日本製鉄株式会社	Hot rolled steel sheet and method for producing the same

2018
- 2018-11-29 KR KR1020180150707A patent/KR102164112B1/en active IP Right Grant
2019
- 2019-11-29 CN CN201980077747.8A patent/CN113166885B/en active Active
- 2019-11-29 WO PCT/KR2019/016692 patent/WO2020111856A2/en unknown
- 2019-11-29 EP EP19891370.9A patent/EP3889296B1/en active Active
- 2019-11-29 JP JP2021530170A patent/JP7221475B6/en active Active
- 2019-11-29 US US17/297,740 patent/US20220042132A1/en active Pending

Also Published As

Publication number	Publication date
JP7221475B6 (en)	2023-02-28
CN113166885B (en)	2022-10-14
JP7221475B2 (en)	2023-02-14
KR20200064511A (en)	2020-06-08
CN113166885A (en)	2021-07-23
JP2022510212A (en)	2022-01-26
KR102164112B1 (en)	2020-10-12
EP3889296B1 (en)	2023-10-18
WO2020111856A2 (en)	2020-06-04
EP3889296A4 (en)	2021-11-03
WO2020111856A3 (en)	2020-08-13
US20220042132A1 (en)	2022-02-10
EP3889296A2 (en)	2021-10-06

Legal Events

Date	Code	Title	Description
2020-06-06	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE
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2021-11-03	RIC1	Information provided on ipc code assigned before grant	Ipc: C21D 9/46 20060101ALI20210928BHEP Ipc: C21D 6/00 20060101ALI20210928BHEP Ipc: C21D 1/02 20060101ALI20210928BHEP Ipc: C21D 8/02 20060101ALI20210928BHEP Ipc: C22C 38/08 20060101ALI20210928BHEP Ipc: C22C 38/00 20060101ALI20210928BHEP Ipc: C22C 38/12 20060101ALI20210928BHEP Ipc: C22C 38/14 20060101ALI20210928BHEP Ipc: C22C 38/06 20060101ALI20210928BHEP Ipc: C22C 38/02 20060101ALI20210928BHEP Ipc: C22C 38/04 20060101AFI20210928BHEP
2022-03-09	DAV	Request for validation of the european patent (deleted)
2022-03-09	DAX	Request for extension of the european patent (deleted)
2022-11-23	RAP3	Party data changed (applicant data changed or rights of an application transferred)	Owner name: POSCO HOLDINGS INC.
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2023-04-26	RIC1	Information provided on ipc code assigned before grant	Ipc: C21D 1/02 20060101ALI20230317BHEP Ipc: C21D 8/02 20060101ALI20230317BHEP Ipc: C21D 9/46 20060101ALI20230317BHEP Ipc: C22C 38/08 20060101ALI20230317BHEP Ipc: C22C 38/12 20060101ALI20230317BHEP Ipc: C22C 38/00 20060101ALI20230317BHEP Ipc: C22C 38/06 20060101ALI20230317BHEP Ipc: C22C 38/02 20060101ALI20230317BHEP Ipc: C22C 38/14 20060101ALI20230317BHEP Ipc: C22C 38/04 20060101AFI20230317BHEP
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