EP4265792A4 - High hardness armored steel having excellent low-temperature impact toughness, and manufacturing method therefor - Google Patents

High hardness armored steel having excellent low-temperature impact toughness, and manufacturing method therefor

Info

Publication number
EP4265792A4
EP4265792A4 EP21906847.5A EP21906847A EP4265792A4 EP 4265792 A4 EP4265792 A4 EP 4265792A4 EP 21906847 A EP21906847 A EP 21906847A EP 4265792 A4 EP4265792 A4 EP 4265792A4
Authority
EP
European Patent Office
Prior art keywords
manufacturing
high hardness
method therefor
temperature impact
excellent low
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
EP21906847.5A
Other languages
German (de)
French (fr)
Other versions
EP4265792A1 (en
Inventor
Seng-Ho YU
Nam-Young Cho
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 EP4265792A1 publication Critical patent/EP4265792A1/en
Publication of EP4265792A4 publication Critical patent/EP4265792A4/en
Pending 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
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • 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
    • 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
    • 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
    • C21D1/22—Martempering
    • 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
    • C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
    • C21D1/60—Aqueous agents
    • 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
    • C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
    • 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
    • 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
    • C21D8/0247—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
    • 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
    • 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
    • C21D9/42—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for armour plate
    • 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
    • C22C38/001—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
    • C22C38/04—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
    • C22C38/34—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
    • C22C38/44—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
    • C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
    • 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
    • C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
    • 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
    • C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel 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
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
    • 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
    • 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
    • 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
    • C21D2211/008—Martensite

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 Steel (AREA)
  • Metal Rolling (AREA)
  • Heat Treatment Of Articles (AREA)
EP21906847.5A 2020-12-18 2021-11-04 High hardness armored steel having excellent low-temperature impact toughness, and manufacturing method therefor Pending EP4265792A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020200179083A KR102498156B1 (en) 2020-12-18 2020-12-18 Armored steel havinh high hardness and excellent low-temperature impact toughness and method for manufacturing thereof
PCT/KR2021/015880 WO2022131542A1 (en) 2020-12-18 2021-11-04 High hardness armored steel having excellent low-temperature impact toughness, and manufacturing method therefor

Publications (2)

Publication Number Publication Date
EP4265792A1 EP4265792A1 (en) 2023-10-25
EP4265792A4 true EP4265792A4 (en) 2025-06-04

Family

ID=82059636

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21906847.5A Pending EP4265792A4 (en) 2020-12-18 2021-11-04 High hardness armored steel having excellent low-temperature impact toughness, and manufacturing method therefor

Country Status (4)

Country Link
EP (1) EP4265792A4 (en)
KR (1) KR102498156B1 (en)
AU (1) AU2021401506B2 (en)
WO (1) WO2022131542A1 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120174749A1 (en) * 2007-09-25 2012-07-12 University Of Pretoria Armour steel
AU2013204206A1 (en) * 2012-10-19 2014-05-08 Bluescope Steel Limited Steel Plate
RU2583229C1 (en) * 2014-11-27 2016-05-10 Открытое акционерное общество "Магнитогорский металлургический комбинат" Method of producing ultrahigh-strength sheet steel
US20160208352A1 (en) * 2013-08-30 2016-07-21 Rautaruukki Oyj A high-hardness hot-rolled steel product, and a method of manufacturing the same
US20180265942A1 (en) * 2015-08-28 2018-09-20 Baoshan Iron & Steel Co., Ltd. Armor Plate With 2000 MPA-Graded Tensile Strength, and Manufacturing Method Therefor
CN109628835A (en) * 2018-12-31 2019-04-16 钢铁研究总院 One kind can cold roll forming high performance ballistic steel plate and its manufacturing process
KR20200024400A (en) * 2018-08-28 2020-03-09 현대제철 주식회사 Steel and method of manufacturing the same

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2733516B1 (en) * 1995-04-27 1997-05-30 Creusot Loire STEEL AND PROCESS FOR THE MANUFACTURE OF PARTS WITH HIGH ABRASION RESISTANCE
JP5365216B2 (en) * 2008-01-31 2013-12-11 Ｊｆｅスチール株式会社 High-strength steel sheet and its manufacturing method
JP5136609B2 (en) * 2010-07-29 2013-02-06 Ｊｆｅスチール株式会社 High-strength hot-dip galvanized steel sheet excellent in formability and impact resistance and method for producing the same
CN103205627B (en) * 2013-03-28 2015-08-26 宝山钢铁股份有限公司 A kind of Low-alloy high-performance wear-resistant steel plate and manufacture method thereof
CN103205634B (en) * 2013-03-28 2016-06-01 宝山钢铁股份有限公司 A kind of low-alloy high hardness wear-resisting steel plate and manufacture method thereof
KR102119959B1 (en) * 2018-09-27 2020-06-05 주식회사 포스코 Wear resistant steel having excellent hardness and impact toughness and method of manufacturing the same

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120174749A1 (en) * 2007-09-25 2012-07-12 University Of Pretoria Armour steel
AU2013204206A1 (en) * 2012-10-19 2014-05-08 Bluescope Steel Limited Steel Plate
US20160208352A1 (en) * 2013-08-30 2016-07-21 Rautaruukki Oyj A high-hardness hot-rolled steel product, and a method of manufacturing the same
RU2583229C1 (en) * 2014-11-27 2016-05-10 Открытое акционерное общество "Магнитогорский металлургический комбинат" Method of producing ultrahigh-strength sheet steel
US20180265942A1 (en) * 2015-08-28 2018-09-20 Baoshan Iron & Steel Co., Ltd. Armor Plate With 2000 MPA-Graded Tensile Strength, and Manufacturing Method Therefor
KR20200024400A (en) * 2018-08-28 2020-03-09 현대제철 주식회사 Steel and method of manufacturing the same
CN109628835A (en) * 2018-12-31 2019-04-16 钢铁研究总院 One kind can cold roll forming high performance ballistic steel plate and its manufacturing process

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2022131542A1 *

Also Published As

Publication number Publication date
EP4265792A1 (en) 2023-10-25
AU2021401506A1 (en) 2023-07-06
WO2022131542A1 (en) 2022-06-23
KR102498156B1 (en) 2023-02-08
KR20220088241A (en) 2022-06-27
AU2021401506B2 (en) 2025-01-02

Similar Documents

Publication Publication Date Title
EP4265797A4 (en) Highly thick steel material having excellent low-temperature impact toughness and manufacturing method therefor
MX380136B (en) HIGH STRENGTH HOT-DIP GALVANIZED STEEL SHEET AND METHOD FOR PRODUCTION THEREOF.
EP4194581A4 (en) Steel material having excellent hydrogen embrittlement resistance and impact toughness and method for manufacturing same
MX374667B (en) HIGH STRENGTH PLATED STEEL SHEET HAVING EXCELLENT PLATING PROPERTIES, WORKABILITY AND INCREASED FRACTURE RESISTANCE, AND METHOD FOR ITS PRODUCTION.
MX2018009643A (en) High-strength steel sheet and method for manufacturing same.
CA3025617C (en) Method for producing a twip steel sheet having an austenitic microstructure
MX2010000967A (en) High hardness, high toughness iron-base alloys and methods for making same.
WO2008123397A1 (en) Case-hardened steel pipe excellent in workability and process for production thereof
UA117656C2 (en) IRON-BASED ALLOYS WITH HIGH STRENGTH, HIGH STRENGTH AND THE METHODS OF THEIR MANUFACTURING
EP4450670A4 (en) Ultra-high strength steel sheet having excellent bendability, and manufacturing method therefor
MX2017001105A (en) High-strength hot-dip zinc-coated steel sheet and method for producing same.
EP4141132A4 (en) Zinc-plated steel sheet, member, and methods for producing these
MX2018002607A (en) High strength thin steel sheet and method for manufacturing same.
EP4130325A4 (en) Steel sheet, member, and methods for manufacturing these
EP4074858A4 (en) Hot-rolled h-beam steel based on special-shaped billet rolling and forming, and manufacturing method therefor
EP3889304A4 (en) High strength thick steel plate for linepipe having excellent low temperature toughness and ductility as well as low yield ratio, and method thereof
EP4428262A4 (en) High-strength steel sheet having excellent crashworthiness and formability, and method for manufacturing same
EP4386103A4 (en) High strength hot-rolled steel sheet having excellent formability, and manufacturing method therefor
MX2022009852A (en) High flangeable ultra-high strength ductile hot-rolled steel, method of manufacturing said hot-rolled steel and use thereof.
EP4265792A4 (en) High hardness armored steel having excellent low-temperature impact toughness, and manufacturing method therefor
EP4265786A4 (en) High hardness armored steel having excellent low-temperature impact toughness, and manufacturing method therefor
EP4265789A4 (en) Armored steel having high hardness and excellent low-temperature impact toughness, and method for manufacturing same
EP4265791A4 (en) Armored steel having high hardness and excellent low-temperature impact toughness, and method for manufacturing same
EP4098765A4 (en) Highly anticorrosive martensitic stainless steel, and manufacturing method therefor
EP4265790A4 (en) Armored steel having high hardness and excellent low-temperature impact toughness and manufacturing method therefor

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: 20230621

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

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
REG Reference to a national code

Ref country code: DE

Ref legal event code: R079

Free format text: PREVIOUS MAIN CLASS: C22C0038580000

Ipc: C22C0038440000

A4 Supplementary search report drawn up and despatched

Effective date: 20250502

RIC1 Information provided on ipc code assigned before grant

Ipc: C21D 1/60 20060101ALI20250425BHEP

Ipc: C21D 1/22 20060101ALI20250425BHEP

Ipc: C21D 1/19 20060101ALI20250425BHEP

Ipc: C21D 1/18 20060101ALI20250425BHEP

Ipc: C21D 1/02 20060101ALI20250425BHEP

Ipc: C21D 6/00 20060101ALI20250425BHEP

Ipc: C21D 8/02 20060101ALI20250425BHEP

Ipc: C21D 9/46 20060101ALI20250425BHEP

Ipc: C21D 9/42 20060101ALI20250425BHEP

Ipc: C22C 38/58 20060101ALI20250425BHEP

Ipc: C22C 38/50 20060101ALI20250425BHEP

Ipc: C22C 38/46 20060101ALI20250425BHEP

Ipc: C22C 38/00 20060101ALI20250425BHEP

Ipc: C22C 38/34 20060101ALI20250425BHEP

Ipc: C22C 38/06 20060101ALI20250425BHEP

Ipc: C22C 38/04 20060101ALI20250425BHEP

Ipc: C22C 38/02 20060101ALI20250425BHEP

Ipc: C22C 38/54 20060101ALI20250425BHEP

Ipc: C22C 38/48 20060101ALI20250425BHEP

Ipc: C22C 38/44 20060101AFI20250425BHEP