As an al-mg alloy, 5052 is widely used, especially in the construction industry. It is the most promising alloy.Good corrosion resistance, good weldability, good cold working ability and medium strength.The main alloy element of the 5052 is magnesium, which has good forming and processing performance, corrosion resistance, weldability and moderate strength. It is used for the manufacture of sheet metal parts of aircraft oil tank, oil pipe, as well as traffic vehicles and ships, instruments, street lamp supports and rivets, hardware products, electrical appliances and so on.Al-mn is an alloy, is the most widely used of a kind of antirust aluminum, the strength of this alloy is high, especially has anti-fatigue strength: plasticity and corrosion resistance is high, can not be strengthened by heat treatment, in the semi-cold hardening when the plasticity is good, cold hardening when the plasticity is low, good corrosion resistance, good weldability, poor cutting performance, can be polished.It is mainly used for low-load parts requiring high plasticity and good weldability, working in liquid or gas medium, such as oil tank, gasoline or lubricating oil duct, various liquid containers and other low-load parts made by deep drawing: wire is used to make rivets.