(19)

(11)

EP 2 043 800 A2

(12)

(88) Date of publication A3: 27.11.2008 (43) Date of publication: 08.04.2009 Bulletin 2009/15 (21) Application number: 07796745.3 (22) Date of filing: 09.07.2007

(51) International Patent Classification (IPC):  B22D 27/04(2006.01) C22C 19/07(2006.01) B22D 27/09(2006.01) (86) International application number: PCT/US2007/015654 (87) International publication number: WO 2008/018967 (14.02.2008 Gazette 2008/07)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK RS (30) Priority: 17.07.2006 US 831521 P (71) Applicant: Howmet Corporation Whitehall, MI 49461-1895 (US)	(72) Inventors: LAUNSBACH, Michael, G. Yorktown, VA 23696 (US) HANSEN, Tyrus, W. New Era, MI 49446 (US) (74) Representative: Hoeger, Stellrecht & Partner Patentanwälte  Uhlandstrasse 14 c 70182 Stuttgart 70182 Stuttgart (DE)