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(11)

EP 4 515 012 A1

(12)

(43) Date of publication: 05.03.2025 Bulletin 2025/10 (21) Application number: 23725940.3 (22) Date of filing: 28.04.2023

(51) International Patent Classification (IPC):  C22C 38/04(2006.01) C22C 38/08(2006.01) C22C 38/14(2006.01) C22C 38/42(2006.01) C22C 38/50(2006.01) C21D 8/02(2006.01) C22C 38/06(2006.01) C22C 38/16(2006.01) C22C 38/58(2006.01) C22C 38/34(2006.01) C21D 6/00(2006.01) (52) Cooperative Patent Classification (CPC): C22C 38/06; C22C 38/04; C22C 38/08; C22C 38/14; C22C 38/16; C22C 38/58; C22C 38/42; C22C 38/34; C22C 38/50; C21D 6/005; C21D 6/004; C21D 8/0205; C21D 8/0226; C21D 2211/001 (86) International application number: PCT/US2023/066391 (87) International publication number: WO 2023/212717 (02.11.2023 Gazette 2023/44)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (30) Priority: 29.04.2022 US 202263336431 P (71) Applicant: United States Steel Corporation Pittsburgh, PA 15219 (US)	(72) Inventors: CETIN, Kelly Allison Gibsonia, Pennsylvania 15044 (US) HAEZEBROUCK, Dennis Michael Murrysville, Pennsylvania 15632 (US) (74) Representative: Richards, John  Ladas & Parry LLP Temple Chambers 3-7 Temple Avenue London EC4Y 0DA Temple Chambers 3-7 Temple Avenue London EC4Y 0DA (GB)