An al-zn-mg-ag high-strength alloy for aerospace and...

Details An al-zn-mg-ag high-strength alloy for aerospace and... An al-zn-mg-ag high-strength alloy for aerospace and...

C - Chemistry, Metallurgy

22

C

C22C 21/10 (2006.01)

Patent

CA 2609534

An aluminum casting alloy comprises, in weight percent: about 4-5% Zn; about 1- 3% Mg; about 0-1% Cu; less than about 0.3% Si; less than about 0.12% Fe; less than about 0.5% Mn; about 0.01-0.05 wt% B; less than about 0.15% Ti; about 0.05-0.2% Zr; about 0.1-0.5% Ag; no more than about 0.05% each miscellaneous element or impurity; no more than about 0.15% total miscellaneous elements or impurities; balance aluminum. The alloy may advantageously be used in either T5 or T6 tempers.

L'invention concerne un alliage pour le coulage de pièces d'aluminium, qui comprend, en pour cent en poids: environ 4-5 % de Zn; environ 1-3 % de Mg; environ 0-1 % de Cu; moins de 0,3 % environ de Si; moins de 0,12 % environ de Fe; moins de 0,5 % environ de Mn; environ 0,01-0,05 % en poids de B; moins de 0,15 % environ de Ti; environ 0,05-0,2 % de Zr; environ 0,1-0,5 % d'Ag; au maximum environ 0,05 % de divers éléments ou impuretés; au maximum environ 0,15 % du total des divers éléments ou impuretés; le reste étant de l'aluminium. Cet alliage s'utilise avantageusement aux états T5 ou T6.

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