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EP 4 522 778 A1

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(43) Date of publication: 19.03.2025 Bulletin 2025/12 (21) Application number: 22726302.7 (22) Date of filing: 13.05.2022

(51) International Patent Classification (IPC):  C22C 38/04(2006.01) C22C 38/12(2006.01) C22C 38/06(2006.01) C21D 8/02(2006.01) C21D 1/18(2006.01) C22C 38/02(2006.01) C22C 38/14(2006.01) C21D 9/46(2006.01) C21D 6/00(2006.01) (52) Cooperative Patent Classification (CPC): C21D 6/005; C21D 9/46; C21D 8/0205; C21D 8/0226; C21D 1/18; C22C 38/02; C22C 38/04; C22C 38/06; C22C 38/12; C22C 38/14 (86) International application number: PCT/IB2022/054466 (87) International publication number: WO 2023/218229 (16.11.2023 Gazette 2023/46)

(84) Designated Contracting States: 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 Designated Extension States: BA ME Designated Validation States: KH MA MD TN (71) Applicant: ArcelorMittal 1160 Luxembourg (LU)	(72) Inventors: POTTORE, Narayan Munster, IN 46321 (US) JAMWAL, Ranbir Chicago, IL 60661 (US) LIN, Brian Hinsdale, IL 60521 (US) POLIAK, Evgueni I Munster, IN 46321-3525 (US) (74) Representative: Plaisant, Sophie Marie  ArcelorMittal Voie Romaine, BP30320 57283 Maizières-Lès-Metz 57283 Maizières-Lès-Metz (FR)