EP4585712A4 - Acier inoxydable austénitique présentant une excellente résistance aux chocs à basse température et son procédé de fabrication - Google Patents

Acier inoxydable austénitique présentant une excellente résistance aux chocs à basse température et son procédé de fabrication

Info

Publication number
EP4585712A4
EP4585712A4 EP23877405.3A EP23877405A EP4585712A4 EP 4585712 A4 EP4585712 A4 EP 4585712A4 EP 23877405 A EP23877405 A EP 23877405A EP 4585712 A4 EP4585712 A4 EP 4585712A4
Authority
EP
European Patent Office
Prior art keywords
manufacturing
stainless steel
lower temperature
austenitic stainless
temperature impact
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
EP23877405.3A
Other languages
German (de)
English (en)
Other versions
EP4585712A1 (fr
Inventor
Seokweon Song
Kwangmin Kim
Hongju Lee
Inho Kim
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 EP4585712A1 publication Critical patent/EP4585712A1/fr
Publication of EP4585712A4 publication Critical patent/EP4585712A4/fr
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
    • 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
    • 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
    • C21D6/005—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
    • 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
    • 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
    • C21D8/0273—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
    • 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
    • C22C38/18—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
    • 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 Steel (AREA)
EP23877405.3A 2022-10-11 2023-05-23 Acier inoxydable austénitique présentant une excellente résistance aux chocs à basse température et son procédé de fabrication Pending EP4585712A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020220129778A KR20240050060A (ko) 2022-10-11 2022-10-11 저온 충격인성이 우수한 오스테나이트계 스테인리스강 및 그 제조 방법
PCT/KR2023/006957 WO2024080474A1 (fr) 2022-10-11 2023-05-23 Acier inoxydable austénitique présentant une excellente résistance aux chocs à basse température et son procédé de fabrication

Publications (2)

Publication Number Publication Date
EP4585712A1 EP4585712A1 (fr) 2025-07-16
EP4585712A4 true EP4585712A4 (fr) 2026-04-22

Family

ID=90669388

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23877405.3A Pending EP4585712A4 (fr) 2022-10-11 2023-05-23 Acier inoxydable austénitique présentant une excellente résistance aux chocs à basse température et son procédé de fabrication

Country Status (5)

Country Link
EP (1) EP4585712A4 (fr)
JP (1) JP2025533644A (fr)
KR (1) KR20240050060A (fr)
CN (1) CN120019173A (fr)
WO (1) WO2024080474A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118460926B (zh) * 2024-05-21 2025-11-21 山西太钢不锈钢股份有限公司 一种易加工高硬化奥氏体不锈钢及其制造方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61270356A (ja) * 1985-05-24 1986-11-29 Kobe Steel Ltd 極低温で高強度高靭性を有するオ−ステナイト系ステンレス鋼板
CN113136533A (zh) * 2021-04-15 2021-07-20 鞍钢股份有限公司 一种低温用奥氏体不锈钢及其制造方法
CN114250421A (zh) * 2021-12-31 2022-03-29 福建青拓特钢技术研究有限公司 焊后抗晶间腐蚀和点蚀性能优于316l的高氮奥氏体不锈钢及制造方法
WO2022108173A1 (fr) * 2020-11-23 2022-05-27 주식회사 포스코 Acier inoxydable austénitique à haute résistance présentant une ténacité à basse température améliorée dans un environnement hydrogène
KR20220071006A (ko) * 2020-11-23 2022-05-31 주식회사 포스코 저온충격인성 및 강도가 향상된 고질소 오스테나이트 스테인리스강 및 그 제조방법

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107406934B (zh) * 2015-03-06 2019-11-08 新日铁住金不锈钢株式会社 耐氢脆化特性优异的高强度奥氏体系不锈钢及其制造方法
JP6801236B2 (ja) * 2015-06-16 2020-12-16 日本製鉄株式会社 低温水素用オーステナイト系ステンレス鋼及びその製造方法
KR102170945B1 (ko) * 2018-10-23 2020-10-29 주식회사 포스코 피로수명이 우수한 오스테나이트계 스테인리스강 및 그 제조방법
CN112877589B (zh) * 2019-11-29 2022-03-18 宝山钢铁股份有限公司 一种碳钢奥氏体不锈钢轧制复合板及其制造方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61270356A (ja) * 1985-05-24 1986-11-29 Kobe Steel Ltd 極低温で高強度高靭性を有するオ−ステナイト系ステンレス鋼板
WO2022108173A1 (fr) * 2020-11-23 2022-05-27 주식회사 포스코 Acier inoxydable austénitique à haute résistance présentant une ténacité à basse température améliorée dans un environnement hydrogène
KR20220071006A (ko) * 2020-11-23 2022-05-31 주식회사 포스코 저온충격인성 및 강도가 향상된 고질소 오스테나이트 스테인리스강 및 그 제조방법
CN113136533A (zh) * 2021-04-15 2021-07-20 鞍钢股份有限公司 一种低温用奥氏体不锈钢及其制造方法
CN114250421A (zh) * 2021-12-31 2022-03-29 福建青拓特钢技术研究有限公司 焊后抗晶间腐蚀和点蚀性能优于316l的高氮奥氏体不锈钢及制造方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2024080474A1 *

Also Published As

Publication number Publication date
KR20240050060A (ko) 2024-04-18
WO2024080474A1 (fr) 2024-04-18
CN120019173A (zh) 2025-05-16
JP2025533644A (ja) 2025-10-07
EP4585712A1 (fr) 2025-07-16

Similar Documents

Publication Publication Date Title
EP4596736A4 (fr) Matériau de barre en acier inoxydable martensitique à coupe libre et son procédé de production
EP4394055A4 (fr) Acier inoxydable ferritique et son procédé de production
EP4219785A4 (fr) Feuille d'acier laminée à chaud présentant une excellente résistance à l'impact et son procédé de fabrication
EP4130326A4 (fr) Tôle en acier, élément, et procédés de fabrication de ceux-ci
EP4560038A4 (fr) Tôle d'acier à haute résistance, son procédé de production, élément et son procédé de production
EP4474072A4 (fr) Matériau d'acier d'alliage austénitique de type à durcissement par précipitation et son procédé de fabrication, et matériau d'acier traité thermiquement en alliage austénitique de type à durcissement par précipitation et son procédé de fabrication
EP4234750A4 (fr) Tôle d'acier à ultra-haute résistance présentant une excellente ductilité et son procédé de fabrication
EP4585712A4 (fr) Acier inoxydable austénitique présentant une excellente résistance aux chocs à basse température et son procédé de fabrication
EP4219784A4 (fr) Feuille d'acier laminée à chaud épaisse de haute résistance et son procédé de fabrication
EP4279618A4 (fr) Matériau en acier inoxydable à base de martensite et son procédé de production
EP4509631A4 (fr) Fil-machine en acier non trempé et revenu présentant une usinabilité et une ténacité améliorées, et son procédé de fabrication
EP4265794A4 (fr) Matériau d'acier ayant une faible dureté de surface et une excellente ténacité à l'impact à basse température, et son procédé de fabrication
EP4575008A4 (fr) Tôle d'acier épaisse, et procédé de fabrication de celle-ci
EP4603618A4 (fr) Acier inoxydable austénitique à ténacité et résistance aux chocs à basse température améliorées et son procédé de fabrication
EP3872212C0 (fr) Acier austénitique cryogénique à haute teneur en manganèse ayant une excellente résistance à la corrosion et procédé de fabrication associé
EP4265799A4 (fr) Acier inoxydable austénitique à résistance à la corrosion et à usinabilité améliorées et son procédé de fabrication
EP4606924A4 (fr) Acier inoxydable austénitique présentant une résistance améliorée à la fragilisation par l'hydrogène et une ténacité aux chocs à basse température, et son procédé de fabrication
EP4640903A4 (fr) Plaque d'acier présentant une résistance élevée et une excellente résistance aux chocs à basse température, procédé de fabrication
EP4575016A4 (fr) Tôle d'acier plaquée hautement résistante, et procédé de fabrication de celle-ci
EP4560037A4 (fr) Tôle d'acier galvanisée à haute résistance, son procédé de fabrication, élément et son procédé de fabrication
EP4640897A4 (fr) Feuille d'acier laminée à chaud et son procédé de fabrication
EP4509629A4 (fr) Tuyau d'acier inoxydable sans soudure et procede de fabrication de celui-ci
EP4455348A4 (fr) Acier austénitique ayant une excellente resistance au froid extrême dans une zone thermiquement affectée et son procédé de fabrication
EP4613906A4 (fr) Acier inoxydable ferritique présentant une meilleure résistance aux chocs et son procédé de fabrication
EP4570928A4 (fr) Tôle d'acier, élément, et procédés de fabrication associés

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: 20250409

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 ME 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)
A4 Supplementary search report drawn up and despatched

Effective date: 20260324

RIC1 Information provided on ipc code assigned before grant

Ipc: C22C 38/58 20060101AFI20260318BHEP

Ipc: C22C 38/42 20060101ALI20260318BHEP

Ipc: C22C 38/44 20060101ALI20260318BHEP

Ipc: C22C 38/02 20060101ALI20260318BHEP

Ipc: C22C 38/00 20060101ALI20260318BHEP

Ipc: C21D 9/46 20060101ALI20260318BHEP

Ipc: C21D 8/02 20060101ALI20260318BHEP

Ipc: C21D 8/0221 20260101ALI20260318BHEP

Ipc: C21D 8/0247 20260101ALI20260318BHEP

Ipc: C21D 6/00 20060101ALI20260318BHEP

Ipc: C21D 1/18 20060101ALI20260318BHEP