According to different aluminum content of alloying elements, aluminum can be divided into eight series,
2A11 aluminum alloy plate sheet Al-Cu-Mg Aluminum Alloy, is a kind of high strength aluminum alloy, heat treatment can be strengthened, and just in quenching hardened state plastic medium, spot welding, quenching and cold hardening after the cutting performance is good, in order to improve the corrosion resistance of anodic oxidation treatment and ordinary painting method or with the aluminum surface layer, as the common military use of aluminum and aluminum aerospace.