3003 is al Mn alloy, which is the most widely used antirust aluminum. The strength of this alloy is not high (slightly higher than industrial pure aluminum), and it can not be strengthened by heat treatment. Therefore, cold working method is used to improve its mechanical properties: it has high plasticity in annealing state, good plasticity in semi cold work hardening, low plasticity in cold work hardening, good corrosion resistance, good weldability and poor machinability 。 It is mainly used for low load parts that require high plasticity and good weldability and work in liquid or gas medium, such as oil tank, gasoline or lubricating oil conduit, various liquid containers and other small load parts made by deep drawing: wire rod is used to make rivet 3003 aluminum plate with good formability, solubility and corrosion resistance. For machining parts that need good formability, high corrosion resistance and weldability, or require both these properties and work with higher strength than 1xxx series alloy.