5182 belongs to Al-Mg aluminum alloy, using a wide range, particularly in the construction inseparable from this alloy is the most promising alloys. Good corrosion resistance, weldability, cold is better, and with moderate intensity. 5052 is the main alloying elements of magnesium, has good forming properties, corrosion resistance, weldability, moderate intensity, for the manufacture of aircraft and transport vehicles, ship sheet metal parts, instruments, lights bracket and rivets, metal products, electrical appliances shell. 5186 Al-Mg- alloy, is the most widely used as a rust-proof aluminum, high strength of this alloy, especially with anti-fatigue strength: high ductility and corrosion resistance, heat treatment can enhance the half-time work hardening plasticity is still good, when the plastic work hardening is low, good corrosion resistance, good weldability, machinability bad, can be polished. Mainly used for high plasticity and good weldability, working in a liquid or gaseous medium, low load parts, such as mailboxes, lubricating catheter, with a variety of liquid containers and other small loads produced by deep drawing parts: wire used do rivets.