EP4130317A4 - Matériau en acier - Google Patents

Matériau en acier Download PDF

Info

Publication number
EP4130317A4
EP4130317A4 EP20928920.6A EP20928920A EP4130317A4 EP 4130317 A4 EP4130317 A4 EP 4130317A4 EP 20928920 A EP20928920 A EP 20928920A EP 4130317 A4 EP4130317 A4 EP 4130317A4
Authority
EP
European Patent Office
Prior art keywords
steel material
steel
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
EP20928920.6A
Other languages
German (de)
English (en)
Other versions
EP4130317A1 (fr
Inventor
Daisuke Matsuo
Yusaku TOMIO
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
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 Nippon Steel Corp filed Critical Nippon Steel Corp
Publication of EP4130317A1 publication Critical patent/EP4130317A1/fr
Publication of EP4130317A4 publication Critical patent/EP4130317A4/fr
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
    • C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
    • 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
    • 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
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C21D1/25—Hardening, combined with annealing between 300 degrees Celsius and 600 degrees Celsius, i.e. heat refining ("Vergüten")
    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/10—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
    • C21D8/105—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies of ferrous alloys
    • 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
    • C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
    • 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
    • C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
    • C21D9/085—Cooling or quenching
    • 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
    • C22C38/004—Very low carbon steels, i.e. having a carbon content of less than 0,01%
    • 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
    • C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
    • 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
    • C22C38/06—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
    • C22C38/40—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
    • C22C38/46—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
    • C22C38/52—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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/004—Dispersions; Precipitations
    • 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)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Heat Treatment Of Steel (AREA)
EP20928920.6A 2020-04-01 2020-04-01 Matériau en acier Pending EP4130317A4 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2020/014975 WO2021199368A1 (fr) 2020-04-01 2020-04-01 Matériau en acier

Publications (2)

Publication Number Publication Date
EP4130317A1 EP4130317A1 (fr) 2023-02-08
EP4130317A4 true EP4130317A4 (fr) 2023-05-17

Family

ID=77929911

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20928920.6A Pending EP4130317A4 (fr) 2020-04-01 2020-04-01 Matériau en acier

Country Status (7)

Country Link
US (1) US20230175107A1 (fr)
EP (1) EP4130317A4 (fr)
JP (1) JP7364962B2 (fr)
CN (1) CN115698358B (fr)
BR (1) BR112022019162A2 (fr)
MX (1) MX2022012281A (fr)
WO (1) WO2021199368A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116745451A (zh) * 2021-01-28 2023-09-12 日本制铁株式会社 钢材
JP7239086B1 (ja) * 2021-10-01 2023-03-14 日本製鉄株式会社 マルテンサイト系ステンレス鋼管
WO2023054586A1 (fr) * 2021-10-01 2023-04-06 日本製鉄株式会社 Tuyau en acier inoxydable martensitique
JP7328605B1 (ja) * 2021-10-26 2023-08-17 日本製鉄株式会社 マルテンサイト系ステンレス丸鋼
WO2024063108A1 (fr) * 2022-09-21 2024-03-28 日本製鉄株式会社 Matériau en acier inoxydable martensitique

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5496421A (en) * 1993-10-22 1996-03-05 Nkk Corporation High-strength martensitic stainless steel and method for making the same
JPH10237604A (ja) * 1996-12-19 1998-09-08 Nippon Steel Corp 熱間加工性及び耐硫化物応力割れ性に優れたマルテンサイト系ステンレス鋼及びその分塊圧延方法並びにこれらを用いた継目無鋼管及びその製造方法
JP2000313941A (ja) * 1999-04-27 2000-11-14 Nippon Steel Corp 表面品質に優れたマルテンサイト系ステンレス鋼継目無鋼管
US20050224143A1 (en) * 2002-12-20 2005-10-13 Hideki Takabe High strength martensitic stainless steel excellent in carbon dioxide gas corrosion resistance and sulfide stress-corrosion cracking resistance
US20170096722A1 (en) * 2014-05-21 2017-04-06 Jfe Steel Corporation High-strength seamless stainless steel pipe for oil country tubular goods and method for manufacturing the same
EP3460087A1 (fr) * 2016-05-20 2019-03-27 Nippon Steel & Sumitomo Metal Corporation Barre d'acier pour élément de fond de trou et élément de fond de trou
EP3604591A1 (fr) * 2017-03-28 2020-02-05 Nippon Steel Corporation Matériau en acier inoxydable martensitique

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3444008B2 (ja) 1995-03-10 2003-09-08 住友金属工業株式会社 耐炭酸ガス腐食性及び耐硫化物応力腐食割れ性の優れたマルテンサイトステンレス鋼
JP2000192196A (ja) 1998-12-22 2000-07-11 Sumitomo Metal Ind Ltd 油井用マルテンサイト系ステンレス鋼
JP2002161312A (ja) * 2000-11-21 2002-06-04 Nkk Corp 高靭性高クロム鋼板の製造方法
JP2003003243A (ja) * 2001-06-22 2003-01-08 Sumitomo Metal Ind Ltd 耐炭酸ガス腐食性および耐硫化物応力腐食割れ性に優れた高強度マルテンサイトステンレス鋼
JP5582307B2 (ja) 2010-12-27 2014-09-03 Ｊｆｅスチール株式会社 油井用高強度マルテンサイト系ステンレス継目無鋼管
MX363648B (es) * 2012-06-20 2019-03-28 Nippon Steel & Sumitomo Metal Corp Acero para articulos tubulares de paises petroleros y metodo para la produccion de los mismos.
EP2947167B1 (fr) * 2013-01-16 2016-12-07 JFE Steel Corporation Tube sans soudure d'acier inoxydable en vue d'une utilisation dans un puits de pétrole et son procédé de fabrication
JP6193206B2 (ja) * 2013-12-11 2017-09-06 株式会社神戸製鋼所 耐サワー性、ｈａｚ靭性及びｈａｚ硬さに優れた鋼板およびラインパイプ用鋼管
JP6229640B2 (ja) * 2014-11-14 2017-11-15 Ｊｆｅスチール株式会社 継目無鋼管およびその製造方法
JP6596954B2 (ja) 2015-06-12 2019-10-30 日本製鉄株式会社 継目無鋼管及びその製造方法
JP7264596B2 (ja) * 2018-03-19 2023-04-25 日本製鉄株式会社 鋼材
WO2019225281A1 (fr) * 2018-05-25 2019-11-28 Ｊｆｅスチール株式会社 Tuyau sans soudure en acier inoxydable martensitique pour tuyaux de puits de pétrole et son procédé de production

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5496421A (en) * 1993-10-22 1996-03-05 Nkk Corporation High-strength martensitic stainless steel and method for making the same
JPH10237604A (ja) * 1996-12-19 1998-09-08 Nippon Steel Corp 熱間加工性及び耐硫化物応力割れ性に優れたマルテンサイト系ステンレス鋼及びその分塊圧延方法並びにこれらを用いた継目無鋼管及びその製造方法
JP2000313941A (ja) * 1999-04-27 2000-11-14 Nippon Steel Corp 表面品質に優れたマルテンサイト系ステンレス鋼継目無鋼管
US20050224143A1 (en) * 2002-12-20 2005-10-13 Hideki Takabe High strength martensitic stainless steel excellent in carbon dioxide gas corrosion resistance and sulfide stress-corrosion cracking resistance
US20170096722A1 (en) * 2014-05-21 2017-04-06 Jfe Steel Corporation High-strength seamless stainless steel pipe for oil country tubular goods and method for manufacturing the same
EP3460087A1 (fr) * 2016-05-20 2019-03-27 Nippon Steel & Sumitomo Metal Corporation Barre d'acier pour élément de fond de trou et élément de fond de trou
EP3604591A1 (fr) * 2017-03-28 2020-02-05 Nippon Steel Corporation Matériau en acier inoxydable martensitique

Also Published As

Publication number Publication date
CN115698358B (zh) 2023-08-29
EP4130317A1 (fr) 2023-02-08
US20230175107A1 (en) 2023-06-08
CN115698358A (zh) 2023-02-03
JP7364962B2 (ja) 2023-10-19
WO2021199368A1 (fr) 2021-10-07
JPWO2021199368A1 (fr) 2021-10-07
MX2022012281A (es) 2022-10-27
BR112022019162A2 (pt) 2022-11-22

Similar Documents

Publication Publication Date Title
EP4130317A4 (fr) Matériau en acier
EP3950975A4 (fr) Tôle d'acier
EP4026922A4 (fr) Tôle d'acier
EP3950994A4 (fr) Tôle d'acier à haute résistance
EP3992314A4 (fr) Tôle d'acier
EP3524707A4 (fr) Matériau en acier
EP3992323A4 (fr) Matériau en acier plaqué
AU2021365696A9 (en) Plated steel material
EP4234735A4 (fr) Matériau en acier plaqué
EP3992315A4 (fr) Tôle d'acier
EP4060075A4 (fr) Matériau en acier plaqué
EP3835446A4 (fr) Matériau en acier et son procédé de fabrication
EP4112768A4 (fr) Matériau en acier plaqué
EP4269642A4 (fr) Matériau d'acier
EP3998366A4 (fr) Tôle en acier hautement résistante
EP4023778A4 (fr) Matériau en acier approprié pour être utilisé dans un environnement acide
EP3770291A4 (fr) Matériau d'acier
EP4163413A4 (fr) Matériau d'acier plaqué
EP4223901A4 (fr) Tôle d'acier
EP3957763A4 (fr) Matériau en acier plaqué
AU2021418839A9 (en) Plated steel material
EP4194191A4 (fr) Tôle d'acier
EP4230766A4 (fr) Matériau d'acier
EP4123046A4 (fr) Tôle d'acier
EP4137598A4 (fr) Matériau d'acier

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: 20221012

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

REG Reference to a national code

Ref country code: DE

Ref legal event code: R079

Free format text: PREVIOUS MAIN CLASS: C22C0038000000

Ipc: C22C0038440000

A4 Supplementary search report drawn up and despatched

Effective date: 20230419

RIC1 Information provided on ipc code assigned before grant

Ipc: C21D 1/60 20060101ALI20230413BHEP

Ipc: C21D 1/22 20060101ALI20230413BHEP

Ipc: C21D 1/18 20060101ALI20230413BHEP

Ipc: C21D 6/00 20060101ALI20230413BHEP

Ipc: C21D 8/02 20060101ALI20230413BHEP

Ipc: C21D 8/10 20060101ALI20230413BHEP

Ipc: C21D 9/08 20060101ALI20230413BHEP

Ipc: C21D 9/46 20060101ALI20230413BHEP

Ipc: C22C 38/54 20060101ALI20230413BHEP

Ipc: C22C 38/48 20060101ALI20230413BHEP

Ipc: C22C 38/06 20060101ALI20230413BHEP

Ipc: C22C 38/04 20060101ALI20230413BHEP

Ipc: C22C 38/02 20060101ALI20230413BHEP

Ipc: C22C 38/00 20060101ALI20230413BHEP

Ipc: C22C 38/50 20060101ALI20230413BHEP

Ipc: C22C 38/46 20060101ALI20230413BHEP

Ipc: C22C 38/52 20060101ALI20230413BHEP

Ipc: C22C 38/42 20060101ALI20230413BHEP

Ipc: C22C 38/44 20060101AFI20230413BHEP

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