EP3674435A4 - LOW ALLOY STEEL SHEET WITH EXCELLENT STRENGTH AND DUCTILITY AND METHOD FOR THE PRODUCTION THEREOF - Google Patents

LOW ALLOY STEEL SHEET WITH EXCELLENT STRENGTH AND DUCTILITY AND METHOD FOR THE PRODUCTION THEREOF Download PDF

Info

Publication number
EP3674435A4
EP3674435A4 EP18857908.0A EP18857908A EP3674435A4 EP 3674435 A4 EP3674435 A4 EP 3674435A4 EP 18857908 A EP18857908 A EP 18857908A EP 3674435 A4 EP3674435 A4 EP 3674435A4
Authority
EP
European Patent Office
Prior art keywords
ductility
production
steel sheet
alloy steel
excellent strength
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
EP18857908.0A
Other languages
German (de)
French (fr)
Other versions
EP3674435A1 (en
Inventor
Jeom Yong Choi
Mi Nam Park
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 EP3674435A4 publication Critical patent/EP3674435A4/en
Publication of EP3674435A1 publication Critical patent/EP3674435A1/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
    • 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
    • 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
    • C21D8/0236—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 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
    • C21D8/0247—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 heat treatment
    • C21D8/0263—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 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
    • 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
    • C22C38/06—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
    • C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of 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
    • C22C38/18—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
    • 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
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • 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
    • C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of 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
    • C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
    • 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
    • C21D2211/001—Austenite

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
EP18857908.0A 2017-09-25 2018-09-20 Low-alloy steel sheet having excellent strength and ductility and manufacturing method therefor Pending EP3674435A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020170123412A KR101952818B1 (en) 2017-09-25 2017-09-25 Low alloy steel sheet with high strength and ductility and method of manufacturing same
PCT/KR2018/011097 WO2019059660A1 (en) 2017-09-25 2018-09-20 Low-alloy steel sheet having excellent strength and ductility and manufacturing method therefor

Publications (2)

Publication Number Publication Date
EP3674435A4 true EP3674435A4 (en) 2020-07-01
EP3674435A1 EP3674435A1 (en) 2020-07-01

Family

ID=65584496

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18857908.0A Pending EP3674435A1 (en) 2017-09-25 2018-09-20 Low-alloy steel sheet having excellent strength and ductility and manufacturing method therefor

Country Status (4)

Country Link
EP (1) EP3674435A1 (en)
KR (1) KR101952818B1 (en)
CN (1) CN111133122B (en)
WO (1) WO2019059660A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102602352B1 (en) * 2018-04-02 2023-11-17 삼성전자주식회사 Home Appliance including Hairline and Methods for Manufacturing Method thereof
KR102268906B1 (en) * 2019-07-17 2021-06-25 주식회사 포스코 Austenitic stainless steel with imporoved strength and method for manufacturing the same
KR102385472B1 (en) * 2020-04-22 2022-04-13 주식회사 포스코 High-strength, high-formability, low cost austenitic stainless steel and manufacturing method thereof
CN115305412B (en) * 2021-05-05 2024-02-06 通用汽车环球科技运作有限责任公司 Press hardened steel with combination of excellent corrosion resistance and ultra high strength

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4827920A (en) * 1971-08-18 1973-04-13
GB1323919A (en) * 1969-12-27 1973-07-18 Nisshin Steel Co Ltd Austenitic stainless steels
US3756807A (en) * 1970-01-13 1973-09-04 Nisshin Steel Co Ltd Austenitic stainless steels
JPS61124556A (en) * 1984-11-20 1986-06-12 Kawasaki Steel Corp Low nickel austenitic stainless steel sheet and its manufacture
US4946644A (en) * 1989-03-03 1990-08-07 Baltimore Specialty Steels Corporation Austenitic stainless steel with improved castability
US20130039802A1 (en) * 2010-05-06 2013-02-14 Outokumpu Oyj Low-nickel austenitic stainless steel and use of the steel

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2780984B1 (en) 1998-07-09 2001-06-22 Lorraine Laminage COATED HOT AND COLD STEEL SHEET HAVING VERY HIGH RESISTANCE AFTER HEAT TREATMENT
DE102005024029B3 (en) * 2005-05-23 2007-01-04 Technische Universität Bergakademie Freiberg Austenitic lightweight steel and its use
DE102005030413C5 (en) * 2005-06-28 2009-12-10 Technische Universität Bergakademie Freiberg High-strength austenitic-martensitic lightweight steel and its use
DE102006033973A1 (en) * 2006-07-20 2008-01-24 Technische Universität Bergakademie Freiberg Stainless austenitic cast steel and its use
JP5165236B2 (en) * 2006-12-27 2013-03-21 新日鐵住金ステンレス株式会社 Stainless steel plate for structural members with excellent shock absorption characteristics
EP2163659B1 (en) * 2008-09-11 2016-06-08 Outokumpu Nirosta GmbH Stainless steel, cold strip made of same and method for producing cold strip from same
JP2011219809A (en) * 2010-04-08 2011-11-04 Honda Motor Co Ltd High strength steel sheet
IT1403129B1 (en) 2010-12-07 2013-10-04 Ct Sviluppo Materiali Spa PROCEDURE FOR THE PRODUCTION OF HIGH MANGANESE STEEL WITH MECHANICAL RESISTANCE AND HIGH FORMABILITY, AND STEEL SO OBTAINABLE.
JP5869922B2 (en) * 2012-03-09 2016-02-24 新日鐵住金ステンレス株式会社 Ferrite-austenitic duplex stainless steel sheet with small in-plane anisotropy and method for producing the same
FI127274B (en) * 2014-08-21 2018-02-28 Outokumpu Oy AUSTENITIC STAINLESS STEEL WITH HIGH STABILITY AND ITS PRODUCTION METHOD
CN105200340B (en) * 2015-09-23 2020-11-17 宝钢德盛不锈钢有限公司 800-1600 MPa-grade high-strength austenitic stainless steel, manufacturing method and warm forming method
CN106319343B (en) * 2016-10-10 2021-08-17 宝钢德盛不锈钢有限公司 Low-cost high-strength stainless steel and welded pipe manufacturing method thereof
KR101903174B1 (en) * 2016-12-13 2018-10-01 주식회사 포스코 Low alloy steel sheet with excellent strength and ductility

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1323919A (en) * 1969-12-27 1973-07-18 Nisshin Steel Co Ltd Austenitic stainless steels
US3756807A (en) * 1970-01-13 1973-09-04 Nisshin Steel Co Ltd Austenitic stainless steels
JPS4827920A (en) * 1971-08-18 1973-04-13
JPS61124556A (en) * 1984-11-20 1986-06-12 Kawasaki Steel Corp Low nickel austenitic stainless steel sheet and its manufacture
US4946644A (en) * 1989-03-03 1990-08-07 Baltimore Specialty Steels Corporation Austenitic stainless steel with improved castability
US20130039802A1 (en) * 2010-05-06 2013-02-14 Outokumpu Oyj Low-nickel austenitic stainless steel and use of the steel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2019059660A1 *

Also Published As

Publication number Publication date
KR101952818B1 (en) 2019-02-28
CN111133122B (en) 2022-08-16
WO2019059660A1 (en) 2019-03-28
CN111133122A (en) 2020-05-08
EP3674435A1 (en) 2020-07-01

Similar Documents

Publication Publication Date Title
EP3730636A4 (en) HIGH STRENGTH STEEL SHEET WITH EXCELLENT PROCESSABILITY AND METHOD FOR ITS PRODUCTION
ZA202003349B (en) Steel sheet having excellent toughness, ductility and strength, and manufacturing method thereof
EP3633058A4 (en) HIGH STRENGTH STEEL SHEET AND METHOD FOR ITS MANUFACTURING
EP3561116C0 (en) ALUMINUM ALLOY CLAD STEEL MATERIAL WITH EXCELLENT CORROSION RESISTANCE AND METHOD FOR MANUFACTURING THE SAME
EP3733898A4 (en) HIGH STRENGTH COLD-ROLLED STEEL SHEET AND METHOD FOR MANUFACTURING THEREOF
EP3719157A4 (en) HIGH STRENGTH GALVANIZED STEEL SHEET AND METHOD FOR MANUFACTURING IT
PL3394300T3 (en) A method of producing high strength steel sheet having improved ductility and formability and the resulting steel sheet
PL3653738T3 (en) A method of producing some high strength coated steel sheet with improved ductility and formability, and coated steel sheet produced
EP3733897A4 (en) HIGH STRENGTH COLD-ROLLED STEEL SHEET AND METHOD FOR MANUFACTURING THEREOF
HUE071952T2 (en) Cold-rolled martensitic steel sheet and method for producing the same
EP3719156A4 (en) HIGH STRENGTH GALVANIZED STEEL SHEET AND METHOD FOR MANUFACTURING IT
EP3888907A4 (en) CORROSION-RESISTANT SHIP COMPOSITE STEEL SHEET AND METHOD FOR ITS MANUFACTURING
EP3647452A4 (en) STEEL SHEET WITH EXCELLENT RESISTANCE TO LIQUID METAL EMBROIDERY CRACKS AND METHOD FOR THE PRODUCTION THEREOF
PL3164515T3 (en) A method of producing high strength steel sheet having improved formability and ductility and the resulting sheet
EP3395977A4 (en) High strength cold-rolled steel sheet excellent in ductility, hole-forming property and surface treatment property, molten galvanized steel sheet, and method for manufacturing same
EP3674435A4 (en) LOW ALLOY STEEL SHEET WITH EXCELLENT STRENGTH AND DUCTILITY AND METHOD FOR THE PRODUCTION THEREOF
EP3828301C0 (en) HIGH STRENGTH STEEL SHEET WITH EXCELLENT IMPACT RESISTANCE PROPERTIES AND METHOD FOR MANUFACTURING THE SAME
EP3395992A4 (en) Super strength hot-rolled steel sheet excellent ductility and manufacturing therefor
EP3690075A4 (en) FERRITIC STAINLESS STEEL WITH EXCELLENT HIGH TEMPERATURE RESISTANCE AND METHOD FOR ITS MANUFACTURING
HUE044390T2 (en) Process for the manufacture of high strength steel sheet with improved ductility and toughness, and the resulting sheet
EP3730640A4 (en) THICK STEEL PLATE WITH EXCELLENT LOW-TEMPERATURE TOUGHNESS AND METHOD FOR MANUFACTURING IT
EP3839087C0 (en) HOT-ROLLED AND UNANNELED FERRITIC STAINLESS STEEL SHEET WITH EXCELLENT IMPACT STRENGTH AND METHOD FOR ITS PRODUCTION
HUE049063T2 (en) Process for the production of steel sheets with increased strength, ductility and formability
EP3556892A4 (en) Low alloy steel sheet having excellent strength and ductility
EP3578678A4 (en) MARAGING STEEL AND METHOD FOR THE PRODUCTION THEREOF

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

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

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20200324

A4 Supplementary search report drawn up and despatched

Effective date: 20200507

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
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