ALUMINIUM ALLOYS

摘要

IMPROVEMENTS IN OR RELATING TO ALUMINIUM ALLOYS 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 erginaering applications where light weight and high strength are required.