5182 aluminum sheet for the Al-Mg-based rust-proof aluminum, 5182 aluminum performance and 5A02 similar, but slightly higher magnesium than 5A02, and added a small amount of silicon, so good weldability than 5A02, 5182 aluminum with a gas welding, argon arc welding, spot welding and roll welding performance is good, no big difference between the two other properties. Standard: GB / T 6893-2000 ① 5182 belong to Al-Mg alloy, using a wide range, especially in the construction industry can not do without 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 fuel tanks, pipelines, and transportation vehicles, ship sheet metal parts, instruments, lights bracket and rivets, metal products, electrical appliances, such as Shell. Uses ②5186 Al-Mg- alloys, is the most widely used as a rust-proof aluminum, high strength of this alloy, especially those with fatigue strength: high ductility and corrosion resistance can not be heat strengthened ,, half cold hardening plastic 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, gas or oil pipe, with a variety of liquid containers and other small loads produced by deep drawing parts: wire used to make rivets. Chemical composition containing aluminum (Al) balance zinc (Zn) ≤0.25 chromium (Cr) ≤0.10 silicon (Si) ≤0.20 iron (Fe) 0.000 ~ 0.350 Manganese (Mn) 0.20 ~ 0.50 Magnesium (Mg) 4.0 ~ 5.0 Titanium ( Ti) ≤0.10 mechanical properties of copper (Cu) ≤0.15 Tensile strength σb (MPa): ≥175 Conditions yield strength σ0.2 (MPa): ≥80 Elongation δ5 (%): ≥15 Note: Pipe mechanical properties at room temperature Sample Size: All Thickness Heat Specifications 1) homogenization: Heat 460 ~ 475 ℃; holding 12 ~ 14h; air cooling. 2) rapid thermal annealing: heating 350 ~ 410 ℃; holding time 30 ~ 120min; air or water. 3) high temperature annealing: heating 350 ~ 420 ℃; finished thickness ≥6mm or <6mm, the holding time of 10 ~ 30min or 2 ~ 10min; air cooling. 4) low-temperature annealing: heating 250 ~ 300 ℃; holding time is 1 ~ 2h, air cooling. Status: aluminum and aluminum alloy drawn (rolled) seamless tubes (O state)