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EP 3 987 074 A1

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(43) Date of publication: 27.04.2022 Bulletin 2022/17 (21) Application number: 20735297.2 (22) Date of filing: 23.06.2020

(51) International Patent Classification (IPC):  C22C 38/44(2006.01) C22C 38/02(2006.01) C22C 38/42(2006.01) C21D 8/06(2006.01) C22C 38/04(2006.01) C22C 38/58(2006.01) C22C 38/00(2006.01) B21C 47/14(2006.01) (52) Cooperative Patent Classification (CPC): C22C 38/44; C22C 38/02; C22C 38/04; C22C 38/58; C22C 38/001; C22C 38/42; C21D 8/065; B21C 47/143 (86) International application number: PCT/EP2020/067531 (87) International publication number: WO 2020/260299 (30.12.2020 Gazette 2020/53)

(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 (30) Priority: 24.06.2019 SE 1900113 (71) Applicant: AB Sandvik Materials Technology 811 81 Sandviken (SE)	(72) Inventors: HERNBLOM, Johan 811 62 Sandviken (SE) SPAGHETTI, Alessandra 20156 Milano (IT) (74) Representative: Setréus, Ellen  Sandvik Materials Technology EMEA AB Sandvik Materials Technology Patent Function 811 81 Sandviken 811 81 Sandviken (SE)