Global Patent Index - EP 0375572 B1

EP 0375572 B1 19930623 - ALUMINIUM ALLOY FOR CUPPING, CONTAINING SILICON, MAGNESIUM AND COPPER

Title (en)

ALUMINIUM ALLOY FOR CUPPING, CONTAINING SILICON, MAGNESIUM AND COPPER

Publication

EP 0375572 B1 19930623 (FR)

Application

EP 89420499 A 19891219

Priority

FR 8817621 A 19881221

Abstract (en)

[origin: EP0375572A1] The invention relates to an Al alloy for stamping, essentially containing Si, Mg and Cu, and to its process of manufacture. This alloy comprises (in % by weight) contents of Mg and Si which are within a polygon ABCDE having the following coordinates: <IMAGE> the copper content being between 0.5 and 0.8%, the contents of the elements Cr and Zr being less than 0.2% each, the Mn content being </= 0.3%, the Fe content being </= 0.35% and the content of the other elements being individually </= 0.05%, and in total </= 0.15%, the remainder being Al. The range of fabrication methods comprises semi-continuous or continuous ingot casting, optional homogenisation, hot transformation ending in the range 270-320 DEG C, optional cold transformation, complete dissolution, shaping by stamping, folding, roll bending etc., and annealing. This alloy is principally employed in panels for automobile bodywork. <IMAGE>

IPC 1-7

C22C 21/04; C22C 21/16

IPC 8 full level

C22C 21/04 (2006.01); C22C 21/08 (2006.01); C22C 21/14 (2006.01); C22C 21/16 (2006.01)

CPC (source: EP)

C22C 21/08 (2013.01); C22C 21/14 (2013.01)

Designated contracting state (EPC)

AT BE CH DE ES GB GR IT LI LU NL SE

DOCDB simple family (publication)

EP 0375572 A1 19900627; EP 0375572 B1 19930623; AT E90978 T1 19930715; DE 68907332 D1 19930729; DE 68907332 T2 19931111; ES 2041438 T3 19931116; FR 2642436 A1 19900803; FR 2642436 B1 19910614

DOCDB simple family (application)

EP 89420499 A 19891219; AT 89420499 T 19891219; DE 68907332 T 19891219; ES 89420499 T 19891219; FR 8817621 A 19881221