(19)

(11)

EP 2 580 359 A1

(12)

(43) Date of publication: 17.04.2013 Bulletin 2013/16 (21) Application number: 11725880.6 (22) Date of filing: 10.06.2011

(51) International Patent Classification (IPC):  C21D 1/70(2006.01) C21D 8/04(2006.01) C21D 9/48(2006.01) C22C 38/04(2006.01) C22C 38/12(2006.01) C21D 6/00(2006.01) C21D 9/34(2006.01) C22C 38/00(2006.01) C22C 38/06(2006.01) (86) International application number: PCT/EP2011/002868 (87) International publication number: WO 2011/154153 (15.12.2011 Gazette 2011/50)

(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 (30) Priority: 10.06.2010 EP 10165596 (71) Applicant: Tata Steel IJmuiden BV 1970 CA IJmuiden (NL)	(72) Inventors: BERKHOUT, Basjan NL-2021 SP Haarlem (NL) CORNELISSEN, Marcus Cornelis Maria NL-1901 BZ Castricum (NL) PATEL, Jayesh Ramjibhai Sheffield S20 2DW (GB) (74) Representative: Bodin, Andre  Tata Steel Group Intellectual Property Services P.O. Box 10000 1970 CA IJmuiden 1970 CA IJmuiden (NL)