EP3074544B8 - Acier inoxydable martensitique, pièce réalisée en cet acier et son procédé de fabrication - Google Patents

Acier inoxydable martensitique, pièce réalisée en cet acier et son procédé de fabrication Download PDF

Info

Publication number: EP3074544B8
Authority: EP; European Patent Office
Prior art keywords: steel; part made; manufacturing same; martensitic stainless; stainless steel
Prior art date: 2013-11-25
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.): Active

Application number

EP14802886.3A

Other languages

German (de)

English (en)

Other versions

EP3074544A1 (fr

EP3074544B1 (fr

Inventor

Sylvain Pierre PUECH

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.)

Aubert and Duval SA

Original Assignee

Aubert and Duval SA

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.)

2013-11-25

Filing date

2014-11-25

Publication date

2020-03-11

2014-11-25 Application filed by Aubert and Duval SA filed Critical Aubert and Duval SA

2014-11-25 Priority to PL14802886T priority Critical patent/PL3074544T3/pl

2016-10-05 Publication of EP3074544A1 publication Critical patent/EP3074544A1/fr

2019-10-30 Publication of EP3074544B1 publication Critical patent/EP3074544B1/fr

2020-03-11 Application granted granted Critical

2020-03-11 Publication of EP3074544B8 publication Critical patent/EP3074544B8/fr

Status Active legal-status Critical Current

2034-11-25 Anticipated expiration legal-status Critical

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
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D7/00—Casting ingots, e.g. from ferrous metals
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
- 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
- C21D1/25—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
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/007—Heat treatment of ferrous alloys containing Co
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/02—Hardening by precipitation
- 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
- C21D6/04—Hardening by cooling below 0 degrees Celsius
- 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
- C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment 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
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
- 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
- C21D9/32—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for gear wheels, worm wheels, or the like
- 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
- C22C38/02—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
- 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
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
- B22F2003/248—Thermal after-treatment
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2301/00—Metallic composition of the powder or its coating
- B22F2301/35—Iron
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
- 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
- C21D2211/005—Ferrite
- 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)
Manufacturing & Machinery (AREA)
Heat Treatment Of Steel (AREA)
Heat Treatment Of Sheet Steel (AREA)
Heat Treatment Of Articles (AREA)
Manufacture And Refinement Of Metals (AREA)
Powder Metallurgy (AREA)

EP14802886.3A 2013-11-25 2014-11-25 Acier inoxydable martensitique, pièce réalisée en cet acier et son procédé de fabrication Active EP3074544B8 (fr)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
PL14802886T PL3074544T3 (pl)	2013-11-25	2014-11-25	Nierdzewna stal martenzytyczna, element wykonany z tej stali i sposób jego wytwarzania

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
FR1361598A FR3013738B1 (fr)	2013-11-25	2013-11-25	Acier inoxydable martensitique, piece realisee en cet acier et son procede de fabrication
PCT/EP2014/075534 WO2015075262A1 (fr)	2013-11-25	2014-11-25	Acier inoxydable martensitique, pièce réalisée en cet acier et son procédé de fabrication

Publications (3)

Publication Number	Publication Date
EP3074544A1 EP3074544A1 (fr)	2016-10-05
EP3074544B1 EP3074544B1 (fr)	2019-10-30
EP3074544B8 true EP3074544B8 (fr)	2020-03-11

Family

ID=50424415

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP14802886.3A Active EP3074544B8 (fr)	2013-11-25	2014-11-25	Acier inoxydable martensitique, pièce réalisée en cet acier et son procédé de fabrication

Country Status (12)

Country	Link
US (1)	US20160289805A1 (fr)
EP (1)	EP3074544B8 (fr)
JP (1)	JP6207761B2 (fr)
CN (1)	CN105765087B (fr)
CA (1)	CA2930140C (fr)
DK (1)	DK3074544T3 (fr)
ES (1)	ES2763971T3 (fr)
FR (1)	FR3013738B1 (fr)
MX (1)	MX381940B (fr)
PL (1)	PL3074544T3 (fr)
RU (1)	RU2016119955A (fr)
WO (1)	WO2015075262A1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN107653421B (zh) *	2016-07-26	2019-12-10	中国科学院金属研究所	一种耐海水腐蚀的超高强度马氏体时效不锈钢
CN107236895A (zh) *	2017-06-27	2017-10-10	南京律智诚专利技术开发有限公司	一种用于深海潜航设备的合金的生产工艺
GB201805776D0 (en) *	2018-04-06	2018-05-23	Rolls Royce Plc	Maraging steel
CN111014682B (zh) *	2019-10-23	2021-12-14	广州市广智机电工业研究所有限公司	一种粉末不锈钢组织均匀化工艺
SE543967C2 (en) *	2020-02-11	2021-10-12	Blykalla Reaktorer Stockholm Ab	A martensitic steel
IL295923A (en)	2020-02-26	2022-10-01	Crs Holdings Inc	Stainless steel that hardens by precipitation, has high fracture toughness, high strength
CN112195418B (zh) *	2020-09-29	2022-03-18	中国科学院金属研究所	一种微纳米晶马氏体时效不锈钢及其制备方法
CN113604753B (zh) *	2021-06-22	2022-06-17	北京科技大学	一种2600MPa级超高强度钢及其制备方法
CN113774281A (zh) *	2021-08-25	2021-12-10	哈尔滨工程大学	一种2000MPa级高塑韧性高耐蚀马氏体时效不锈钢及其制备方法
CN113774288A (zh) *	2021-08-25	2021-12-10	哈尔滨工程大学	一种超高强高性能中厚板马氏体时效不锈钢及其制备方法
CN113981328B (zh) *	2021-09-18	2022-05-24	四川大学	表面自发连续生成三氧化二铝膜的含铝奥氏体不锈钢及其制备方法
CN115261745A (zh) *	2022-06-30	2022-11-01	河钢股份有限公司	一种高强度马氏体时效不锈钢及其制备方法
CN115233115B (zh) *	2022-07-21	2023-05-16	江苏康瑞新材料科技股份有限公司	一种冷镦辐条用不锈钢丝及其制备方法
CN116024496B (zh) *	2022-12-22	2024-12-06	敦化市拜特科技有限公司	不锈钢带及其制造方法
CN116970878B (zh) *	2023-08-07	2025-04-25	浙江全鼎磁电材料有限公司	高韧性高强度马氏体不锈钢、钢结构件及其制备方法与应用

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR1399973A (fr) *	1963-07-11	1965-05-21	Deutsche Edelstahlwerke Ag	Acier de construction à haute résistance pouvant subir une trempe avec ségrégation
US6813273B2 (en) *	2001-01-19	2004-11-02	Motorola, Inc.	Method and apparatus for determining existence of an address in an address look-up table
JP4431815B2 (ja) *	2001-03-27	2010-03-17	シーアールエスホールディングス，インコーポレイテッド	超強力析出硬化型ステンレス鋼及び同鋼より作られた長尺なストリップ
US7901519B2 (en) *	2003-12-10	2011-03-08	Ati Properties, Inc.	High strength martensitic stainless steel alloys, methods of forming the same, and articles formed therefrom
FR2887558B1 (fr) *	2005-06-28	2007-08-17	Aubert & Duval Soc Par Actions	Composition d'acier inoxydable martensitique, procede de fabrication d'une piece mecanique a partir de cet acier et piece ainsi obtenue
WO2012002208A1 (fr) *	2010-06-28	2012-01-05	社団法人日本航空宇宙工業会	Acier inoxydable durci par précipitation et son procédé de production
FR2964668B1 (fr) *	2010-09-14	2012-10-12	Snecma	Optimisation de l'usinabilite d'aciers martensitiques inoxydables

2013
- 2013-11-25 FR FR1361598A patent/FR3013738B1/fr active Active
2014
- 2014-11-25 RU RU2016119955A patent/RU2016119955A/ru unknown
- 2014-11-25 CA CA2930140A patent/CA2930140C/fr active Active
- 2014-11-25 CN CN201480064237.4A patent/CN105765087B/zh active Active
- 2014-11-25 EP EP14802886.3A patent/EP3074544B8/fr active Active
- 2014-11-25 PL PL14802886T patent/PL3074544T3/pl unknown
- 2014-11-25 WO PCT/EP2014/075534 patent/WO2015075262A1/fr not_active Ceased
- 2014-11-25 MX MX2016006766A patent/MX381940B/es unknown
- 2014-11-25 DK DK14802886.3T patent/DK3074544T3/da active
- 2014-11-25 ES ES14802886T patent/ES2763971T3/es active Active
- 2014-11-25 US US15/038,708 patent/US20160289805A1/en not_active Abandoned
- 2014-11-25 JP JP2016554914A patent/JP6207761B2/ja active Active

Also Published As

Publication number	Publication date
PL3074544T3 (pl)	2020-05-18
RU2016119955A (ru)	2017-12-29
JP2017503083A (ja)	2017-01-26
US20160289805A1 (en)	2016-10-06
ES2763971T3 (es)	2020-06-01
EP3074544A1 (fr)	2016-10-05
CN105765087B (zh)	2018-06-01
DK3074544T3 (da)	2020-01-20
EP3074544B1 (fr)	2019-10-30
FR3013738A1 (fr)	2015-05-29
CA2930140A1 (fr)	2015-05-28
CN105765087A (zh)	2016-07-13
MX2016006766A (es)	2016-09-08
CA2930140C (fr)	2022-04-19
JP6207761B2 (ja)	2017-10-04
WO2015075262A1 (fr)	2015-05-28
FR3013738B1 (fr)	2016-10-14
MX381940B (es)	2025-03-13

Publication	Publication Date	Title
EP3074544B8 (fr)	2020-03-11	Acier inoxydable martensitique, pièce réalisée en cet acier et son procédé de fabrication
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EP3050993A4 (fr)	2017-04-19	Acier non trempé et revenu et son procédé de production
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SG10201710222YA (en)	2018-02-27	Retainer, method for producing same and use thereof
EP3109334A4 (fr)	2017-11-15	Feuille d'acier inoxydable et son procédé de fabrication
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EP3075871B8 (fr)	2019-05-22	Acier magnétique doux et son procédé de fabrication et élément magnétique doux obtenu de l'acier magnétique doux
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