2024 aluminum alloy is a kind of high strength hard aluminum. It belongs to Al-Cu-Mg series aluminum alloy. It can be heat-treated and reinforced with medium plasticity under quenching and quenching conditions. Corrosion resistance is not high. Anodizing and coating methods or surface coating with aluminum are often used to improve its corrosion resistance. The use is mainly used to make various parts and components of high load (but not including stamping parts) such as the skeleton parts on the plane, the skin, the frame, the wing rib, the wing beam, the rivet and so on at 150 degrees.