Global Patent Index - EP 0259232 B2

EP 0259232 B2 19980128 - Easily workable and weldable aluminium alloy, and process for its manufacture

Title (en)

Easily workable and weldable aluminium alloy, and process for its manufacture

Title (de)

Gut bearbeitbare und schweissbare Aluminiumlegierung und Verfahren zu ihrer Herstellung

Title (fr)

Alliage d'aluminium chaudronnable et soudable et son procédé de fabrication

Publication

EP 0259232 B2 19980128 (FR)

Application

EP 87420190 A 19870702

Priority

  • CA 552025 A 19871117
  • FR 8610028 A 19860707

Abstract (en)

[origin: US4814022A] A weldable aluminum alloy workable into sheet form containing Si, Mg and Cu, and a process for its production are disclosed. The alloy comprises (in percent by weight) proportions of Si and Mg as defined by a trapezium having the following co-ordinates: -Si Mg -(A) 0.5 0.1 -(B) 0.5 0.2 -(C) 1.3 0.5 -(D) 1.3 0.1 - Cu: 0.1-0.5; Mn: 0-0.2; Ti: 0-0.1; Fe: 0-0.35; other impurites each: </=0.05 total impurity content: </=0.15 balance Al. The production procedure comprises semi-continuous or continuous casting of blanks, an optional homogenisation operation, a hot transformation operation which is terminated in the range of 270 DEG to 340 DEG C., an optional cold transformation operation, a complete solution treatment, a shaping operation using stamping or pressing, folding, bending, etc . . . , and a tempering operation.

IPC 1-7

C22C 21/08; C22F 1/05

IPC 8 full level

C22C 21/08 (2006.01)

CPC (source: EP US)

C22C 21/08 (2013.01 - EP US)

Designated contracting state (EPC)

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

DOCDB simple family (publication)

FR 2601040 A1 19880108; FR 2601040 B1 19880902; CA 1340260 C 19981215; DE 3771017 D1 19910801; EP 0259232 A1 19880309; EP 0259232 B1 19910626; EP 0259232 B2 19980128; ES 2022918 B3 19911216; ES 2022918 T5 19980316; GR 3002191 T3 19921230; GR 3026104 T3 19980529; US 4814022 A 19890321

DOCDB simple family (application)

FR 8610028 A 19860707; CA 552025 A 19871117; DE 3771017 T 19870702; EP 87420190 A 19870702; ES 87420190 T 19870702; GR 900401165 T 19910627; GR 980400273 T 19980212; US 6811887 A 19870630