The 6XXX series aluminum alloy is an aluminum alloy with magnesium and silicon as the main alloying elements and Mg2Si phase as the strengthening phase, which belongs to the aluminum alloy that can be strengthened by heat treatment.

6000 alloy has the advantages of medium strength, high corrosion resistance, no tendency of stress corrosion cracking, good welding performance, constant corrosion performance of welding zone, good formability and process performance, etc. When the alloy contains copper, the strength of the alloy can be close to 2XXX It is an aluminum alloy, and its process performance is better than that of 2XXX series aluminum alloy, but its corrosion resistance becomes worse, and the alloy has good forging performance.

Among the 6XXX series alloys, 6061 and 6063 alloys are the most widely used. They have the best comprehensive properties. The main products are extruded profiles, which are the best extruded alloys. The alloys are widely used as architectural profiles.