7 series aluminum alloys are aluminum-magnesium-zinc-copper alloys, mainly zinc, but sometimes magnesium and copper are also added in small amounts. Among them, super hard aluminum alloy is the alloy containing zinc, lead, magnesium and copper, which is close to the hardness of steel.
7xxx series aluminum alloys are heat treatable alloys, which are super hard aluminum alloys with good wear resistance, slower extrusion speed than 6 series alloys, and good welding performance.
7000 series aluminum alloys also belong to aviation series, application scope: aviation (aircraft load-bearing components, landing gear), rocket, propeller, airship.
The representative of 7 series aluminum plate 7075 , mainly contains zinc elements.
7075 aluminum plate is stress relieved, will not be deformed and warped after processing. 7075 aluminum plate has high thermal conductivity, which can shorten the molding time and improve work efficiency.
7075 is mainly characterized by high hardness, is a high hardness, high strength aluminum alloy, commonly used in the manufacture of aircraft structures and futures and other high stress structural parts requiring high strength, corrosion resistance, mold manufacturing.
7005 aluminum sheet is Al-Zn-Mg-Cu series super-hard aluminum，with good welding performance， strength weaker than 6061 aluminum sheet， but a lot light， are typical of lightweight aluminum.
7005 aluminum sheet， often used in the manufacture of both high strength and high fracture toughness of the welding structure， such as transport vehicles， trusses， rods， containers; large heat exchangers， and welding can not be solid Processed parts; can also be used to make sports equipment such as tennis racquet
Zn is the mainly alloy elements of 7050 aluminum sheet. Adding magnesium into the 7050 alloy which contains 3% -75% of Zn forms a significant strengthening effect of MgZn2 and makes the effect of heat treatment far better than Al-Zn binary alloy. 7050 aluminum sheet is mainly used in aerospace， mold processing， machinery and equipment， fixture， particularly high aircraft structures and other requirements of strength， corrosion resistance and strong high-stress structure.
7050 aluminum sheet is mainly used in the aerospace industry, mold processing such as blow molding (bottles) mode, ultrasonic plastic welding mold, golf head, shoe mold, paper and plastic molding, foam molding, lost wax mold, templates, fixtures, machinery and equipment, and the production of high-end aluminum bicycle frame.
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