The 5A02 aluminum plate is an AL-Mg alloy with high strength. It has excellent fatigue resistance, high plasticity and corrosion resistance. It cannot be strengthened through heat treatment. During semi-cold working, its plasticity is still good, but during cold working, its plasticity is low. It has good corrosion resistance, good weldability, and poor machinability. It can be polished. Its main application is in parts that require high plasticity and good weldability, such as parts working in liquid or gas media with low loads, such as fuel tanks, gasoline or lubricating oil conduits, various liquid containers, and other small-load parts made by deep drawing.