6xxx series aluminum alloys are aluminum alloys with magnesium and silicon as the main alloying elements and Mg2Si phase as the strengthening phase, to heat-treatable aluminum alloys. The alloys have moderate strength, high corrosion resistance, no stress corrosion cracking tendency, good welding performance, unchanged corrosion performance in theded area, good formability and process performance, etc. When the alloy contains copper, the strength of the alloy can approach that of the 2xxx series aluminum alloys, the process performance is better than that of the 2xxx series aluminum alloys, but the corrosion resistance becomes worse. The alloy has good forging performance. The most widely used6xxx series alloys are 6061 and 6063 alloys, which have the best comprehensive performance, and the main products are extruded profiles, are the best extrusion alloys. This alloy is widely used for building profiles. Currently produced 6xxx series aluminum alloy brands: 6005 660 6061 6063 6082 6201 6262 6463 6A02