Rust-proof aluminum alloy

1 The role of alloy systems and alloying elements. Al-Mn alloy (3×××), aluminum magnesium alloy (5××× ×); Mn improves the corrosion resistance and plays the role of solid solution strengthening. Mg solution strengthening, while reducing density.

2 Strengthening methods and performance characteristics. Aluminum alloy that cannot be heat treated (aging) can only be strengthened by cold deformation; Good corrosion resistance, can work in the atmosphere, sea water and other media, and good weldability, with high plasticity and medium strength.

3 Typical brand and usage. 3A21, China's only aluminum manganese, commonly used to make corrosion resistant stamping parts, such as pipelines, fuel tanks, containers and cans; 5A05, aluminum magnesium series, low density, commonly used to make corrosion resistant sheet containers and less stressed structural parts, such as fuel tanks, rivets, pipes, food machinery parts, etc.