EP4613905A4 - AUSTENITIC STAINLESS STEEL AND MANUFACTURING PROCESSES FOR IT - Google Patents
AUSTENITIC STAINLESS STEEL AND MANUFACTURING PROCESSES FOR ITInfo
- Publication number
- EP4613905A4 EP4613905A4 EP23907346.3A EP23907346A EP4613905A4 EP 4613905 A4 EP4613905 A4 EP 4613905A4 EP 23907346 A EP23907346 A EP 23907346A EP 4613905 A4 EP4613905 A4 EP 4613905A4
- Authority
- EP
- European Patent Office
- Prior art keywords
- stainless steel
- manufacturing processes
- austenitic stainless
- austenitic
- processes
- 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
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
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
-
- 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
- C21D1/26—Methods of 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
- 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
- C21D8/0247—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
- C22C38/04—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
- 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)
- Heat Treatment Of Steel (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020220180013A KR20240098332A (en) | 2022-12-21 | 2022-12-21 | Austenitic stainless steel and manufacturing method thereof |
| PCT/KR2023/016065 WO2024136060A1 (en) | 2022-12-21 | 2023-10-17 | Austenitic stainless steel and manufacturing method therefor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4613905A1 EP4613905A1 (en) | 2025-09-10 |
| EP4613905A4 true EP4613905A4 (en) | 2026-04-29 |
Family
ID=91589040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23907346.3A Pending EP4613905A4 (en) | 2022-12-21 | 2023-10-17 | AUSTENITIC STAINLESS STEEL AND MANUFACTURING PROCESSES FOR IT |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP4613905A4 (en) |
| JP (1) | JP2026500399A (en) |
| KR (1) | KR20240098332A (en) |
| CN (1) | CN120303435A (en) |
| WO (1) | WO2024136060A1 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019112152A1 (en) * | 2017-12-04 | 2019-06-13 | 주식회사 포스코 | Austenitic stainless steel having excellent formability and season cracking resistance |
| WO2019112142A1 (en) * | 2017-12-06 | 2019-06-13 | 주식회사 포스코 | High-hardness austenitic stainless steel having excellent corrosion resistance |
| WO2021019849A1 (en) * | 2019-07-31 | 2021-02-04 | Ｊｆｅスチール株式会社 | Austenitic stainless steel sheet for fuel cell separator substrate |
| WO2021215203A1 (en) * | 2020-04-20 | 2021-10-28 | 日鉄ステンレス株式会社 | Austenitic stainless steel and spring |
| EP3916136A1 (en) * | 2019-01-21 | 2021-12-01 | JFE Steel Corporation | Austenitic stainless steel sheet for fuel cell separator, and method for producing same |
| WO2022131204A1 (en) * | 2020-12-15 | 2022-06-23 | Ｊｆｅスチール株式会社 | Stainless steel sheet for separator of fuel cell |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5217755B2 (en) * | 2008-08-06 | 2013-06-19 | 新日鐵住金株式会社 | Stainless steel for fuel cell separator and fuel cell separator |
| KR101588093B1 (en) * | 2013-12-24 | 2016-01-22 | 주식회사 포스코 | Austenite Stainless Steel for Fuel Cell and Manufacturing Method Thereof |
| KR102102608B1 (en) * | 2019-12-20 | 2020-04-22 | 현대비앤지스틸 주식회사 | Method of manufacturing stainless steel for proton exchange membrane fuel cell separator |
-
2022
- 2022-12-21 KR KR1020220180013A patent/KR20240098332A/en active Pending
-
2023
- 2023-10-17 CN CN202380086273.XA patent/CN120303435A/en active Pending
- 2023-10-17 WO PCT/KR2023/016065 patent/WO2024136060A1/en not_active Ceased
- 2023-10-17 EP EP23907346.3A patent/EP4613905A4/en active Pending
- 2023-10-17 JP JP2025536902A patent/JP2026500399A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019112152A1 (en) * | 2017-12-04 | 2019-06-13 | 주식회사 포스코 | Austenitic stainless steel having excellent formability and season cracking resistance |
| WO2019112142A1 (en) * | 2017-12-06 | 2019-06-13 | 주식회사 포스코 | High-hardness austenitic stainless steel having excellent corrosion resistance |
| EP3916136A1 (en) * | 2019-01-21 | 2021-12-01 | JFE Steel Corporation | Austenitic stainless steel sheet for fuel cell separator, and method for producing same |
| WO2021019849A1 (en) * | 2019-07-31 | 2021-02-04 | Ｊｆｅスチール株式会社 | Austenitic stainless steel sheet for fuel cell separator substrate |
| WO2021215203A1 (en) * | 2020-04-20 | 2021-10-28 | 日鉄ステンレス株式会社 | Austenitic stainless steel and spring |
| WO2022131204A1 (en) * | 2020-12-15 | 2022-06-23 | Ｊｆｅスチール株式会社 | Stainless steel sheet for separator of fuel cell |
Non-Patent Citations (1)
| Title |
|---|
| See also references of WO2024136060A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN120303435A (en) | 2025-07-11 |
| WO2024136060A1 (en) | 2024-06-27 |
| EP4613905A1 (en) | 2025-09-10 |
| JP2026500399A (en) | 2026-01-06 |
| KR20240098332A (en) | 2024-06-28 |
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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: 20250603 |
|
| 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: 20260331 |
|
| RIC1 | Information provided on ipc code assigned before grant |
Ipc: C22C 38/42 20060101AFI20260325BHEP Ipc: C22C 38/04 20060101ALI20260325BHEP Ipc: C22C 38/02 20060101ALI20260325BHEP Ipc: C22C 38/00 20060101ALI20260325BHEP Ipc: C21D 9/46 20060101ALI20260325BHEP Ipc: C21D 8/0221 20260101ALI20260325BHEP Ipc: C21D 8/0247 20260101ALI20260325BHEP Ipc: C21D 8/02 20060101ALI20260325BHEP Ipc: C21D 6/00 20060101ALI20260325BHEP Ipc: C21D 1/26 20060101ALI20260325BHEP |