3003 for AL-Mn system alloy, is one of the most widely used rust-proof aluminum, this alloy's strength is not high (slightly higher than industrial pure aluminum), can not be heat-treated to strengthen, so the use of cold-working methods to improve its mechanical properties: in the annealed state has a high degree of plasticity in the semi-cold hardening of plasticity is still good, cold hardening of plasticity is low, corrosion resistance is good, weldability is good, poor machinability. Uses are mainly used for the requirements of high plasticity and good weldability, working in liquid or gaseous media in the low load parts, such as fuel tanks, gasoline or lubricating oil conduit, a variety of liquid containers and other small loads with the production of deep drawing parts: wire used to make rivets.
