(19)

(11)

EP 2 935 639 A1

(12)

(43) Date of publication: 28.10.2015 Bulletin 2015/44 (21) Application number: 13811174.5 (22) Date of filing: 16.12.2013

(51) International Patent Classification (IPC):  C22C 38/02(2006.01) C22C 38/44(2006.01) E21B 17/02(2006.01) C21D 9/14(2006.01) C22C 38/46(2006.01) (86) International application number: PCT/EP2013/076740 (87) International publication number: WO 2014/095747 (26.06.2014 Gazette 2014/26)

(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 (30) Priority: 20.12.2012 EP 12198569 (71) Applicant: Sandvik Intellectual Property AB 811 81 Sandviken (SE)	(72) Inventors: LINDÉN, Johan S-806 36 Gävle (SE) ANTONSSON, Tomas S-811 35 Sandviken (SE) (74) Representative: Setréus, Ellen  Sandvik Intellectual Property AB 811 81 Sandviken 811 81 Sandviken (SE)