IMPROVEMENTS IN OR RELATING TO ALUMINIUM ALLOYS

摘要

Aluminium alloys having compositions within the ranges (in wt %) 2 to 2.8 lithium-0.4 to 1 magnesium-1 to 1.5 copper-0 to 0.2 zirconium-0 to 0.5 manganese-0 to 0.5 nickel-0 to 0.5 chromium-balance aluminium. The alloys are precipitation hardenable and exhibit a range of properties, according to heat treatment, which make them suitable for engineering applications where light weight and high strength are required.