EP4606922A4 - LOW THERMAL EXPANSION STEEL EXHIBITING IMPROVED LOW-TEMPERATURE SHOCK TOUGHNESS, AND A PROCESS FOR ITS MANUFACTURE - Google Patents

LOW THERMAL EXPANSION STEEL EXHIBITING IMPROVED LOW-TEMPERATURE SHOCK TOUGHNESS, AND A PROCESS FOR ITS MANUFACTURE

Info

Publication number
EP4606922A4
EP4606922A4 EP23903673.4A EP23903673A EP4606922A4 EP 4606922 A4 EP4606922 A4 EP 4606922A4 EP 23903673 A EP23903673 A EP 23903673A EP 4606922 A4 EP4606922 A4 EP 4606922A4
Authority
EP
European Patent Office
Prior art keywords
low
manufacturing
thermal expansion
temperature impact
impact 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.)
Pending
Application number
EP23903673.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP4606922A1 (en
Inventor
Kyunghun Kim
Hak Kim
Jisoo Kim
Jongjin Jeon
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 EP4606922A1 publication Critical patent/EP4606922A1/en
Publication of EP4606922A4 publication Critical patent/EP4606922A4/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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/52—Ferrous alloys, e.g. steel alloys containing chromium with nickel with cobalt
    • 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
    • C21D6/001—Heat treatment of ferrous alloys containing 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
    • C21D6/004—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
    • C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, 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
    • C21D8/0221—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
    • 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
    • C22C38/02—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
    • C22C38/08—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
    • C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
    • C22C38/105—Ferrous alloys, e.g. steel alloys containing cobalt containing Co and Ni

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)
EP23903673.4A 2022-12-14 2023-09-04 LOW THERMAL EXPANSION STEEL EXHIBITING IMPROVED LOW-TEMPERATURE SHOCK TOUGHNESS, AND A PROCESS FOR ITS MANUFACTURE Pending EP4606922A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020220174828A KR20240091663A (ko) 2022-12-14 2022-12-14 저온 충격인성이 향상된 저열팽창강 및 그 제조방법
PCT/KR2023/013122 WO2024128469A1 (ko) 2022-12-14 2023-09-04 저온 충격인성이 향상된 저열팽창강 및 그 제조방법

Publications (2)

Publication Number Publication Date
EP4606922A1 EP4606922A1 (en) 2025-08-27
EP4606922A4 true EP4606922A4 (en) 2026-04-22

Family

ID=91485092

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23903673.4A Pending EP4606922A4 (en) 2022-12-14 2023-09-04 LOW THERMAL EXPANSION STEEL EXHIBITING IMPROVED LOW-TEMPERATURE SHOCK TOUGHNESS, AND A PROCESS FOR ITS MANUFACTURE

Country Status (5)

Country Link
EP (1) EP4606922A4 (ko)
JP (1) JP2025541555A (ko)
KR (1) KR20240091663A (ko)
CN (1) CN120569509A (ko)
WO (1) WO2024128469A1 (ko)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN119101851B (zh) * 2024-08-14 2026-01-23 山西太钢不锈钢股份有限公司 一种低膨胀精密合金厚板及其制造方法
KR20260038011A (ko) * 2024-09-11 2026-03-18 주식회사 포스코 저열팽창강 및 그 제조방법

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08193248A (ja) * 1995-01-13 1996-07-30 Nisshin Steel Co Ltd シャドウマスク用低熱膨張合金
US20060171840A1 (en) * 2002-12-20 2006-08-03 Fabien Gaben Iron- nickel alloy with low coefficient of thermal expansion for making shade masks
US20170096727A1 (en) * 2014-03-14 2017-04-06 Aperam Iron-nickel alloy having improved weldability
JP2020190018A (ja) * 2019-05-23 2020-11-26 日鉄ステンレス株式会社 インバー合金板およびその製造方法
WO2021221003A1 (ja) * 2020-04-28 2021-11-04 日鉄ステンレス株式会社 合金材およびその製造方法
US20220380872A1 (en) * 2019-12-27 2022-12-01 Nippon Steel Corporation Alloy

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970001325B1 (ko) 1994-05-17 1997-02-05 김만제 고온 내산화성 및 열간가공성이 우수한 인바합금 및 그 제조방법
JP2004323949A (ja) * 2003-04-28 2004-11-18 Nikko Metal Manufacturing Co Ltd プレス成形型シャドウマスク用Ｆｅ−Ｎｉ系合金薄帯
DE102006062782B4 (de) * 2006-12-02 2010-07-22 Thyssenkrupp Vdm Gmbh Eisen-Nickel-Legierung mit hoher Duktilität und geringem Ausdehnungskoeffizienten
CN110541119B (zh) * 2018-05-28 2021-07-09 宝武特种冶金有限公司 一种低膨胀铁镍合金及其制造方法
JP7610244B2 (ja) * 2020-12-16 2025-01-08 新報国マテリアル株式会社 低熱膨張合金

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08193248A (ja) * 1995-01-13 1996-07-30 Nisshin Steel Co Ltd シャドウマスク用低熱膨張合金
US20060171840A1 (en) * 2002-12-20 2006-08-03 Fabien Gaben Iron- nickel alloy with low coefficient of thermal expansion for making shade masks
US20170096727A1 (en) * 2014-03-14 2017-04-06 Aperam Iron-nickel alloy having improved weldability
JP2020190018A (ja) * 2019-05-23 2020-11-26 日鉄ステンレス株式会社 インバー合金板およびその製造方法
US20220380872A1 (en) * 2019-12-27 2022-12-01 Nippon Steel Corporation Alloy
WO2021221003A1 (ja) * 2020-04-28 2021-11-04 日鉄ステンレス株式会社 合金材およびその製造方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2024128469A1 *

Also Published As

Publication number Publication date
EP4606922A1 (en) 2025-08-27
CN120569509A (zh) 2025-08-29
JP2025541555A (ja) 2025-12-19
WO2024128469A1 (ko) 2024-06-20
KR20240091663A (ko) 2024-06-21

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