AN AL-ZN-MG-CU-SC HIGH STRENGTH ALLOY FOR AEROSPACE AND AUTOMOTIVE CASTINGS

摘要

An aluminum casting alloy, comprises, in weight percent, about 4-9% Zn; about1-4% Mg; about 1-2.5% Cu; less than about 0.1% Si; less than about 0.12% Fe;less than about 0.5% Mn; about 0.01-0.05% B; less than about 0.15% Ti; about0.05-0.2% Zr; about 0.1-0.5% Sc; no more than about 0.05% each miscellaneouselement or impurity; no more tha about 0.15% total miscellaneous elements orimpurities.