7 series aluminum alloys are aluminum magnesium zinc copper alloys, mainly zinc, but sometimes a small amount of magnesium and copper are added. Superhard aluminum alloy contains zinc, lead, magnesium and copper alloys, which is close to the hardness of steel.
7 series aluminum alloys are heat treatable alloys, belonging to superhard aluminum alloys, with good wear resistance, slower extrusion speed than 6 series alloys and good welding performance.
7 series aluminum alloy also belongs to Aviation series, and its application scope: Aviation (aircraft load-bearing components, landing gear), rocket, propeller and aerospace.
The representative of seven series aluminum plate is 7075, which mainly contains zinc.
7075 aluminum plate is stress relieved and will not deform and warp after processing. 7075 aluminum plate has high thermal conductivity, which can shorten the forming time and improve the working efficiency.
7075 is mainly characterized by high hardness. It is an aluminum alloy with high hardness and high strength. It is commonly used in the manufacture of aircraft structures and high stress structural parts and molds requiring high strength and strong corrosion resistance.