China 7050 Aluminum Sheet

7xxx aluminum alloy’s main alloy is zinc. It also has a small amount of magnesium and copper. Its hardness is close to steel. 7050, 7005 and 7075 are the typical ones of 7 series aluminum alloy. They are widely used in viation (aircraft load-bearing components, landing gear), rockets, propellers, aerospace ships and other places.

The common temper of 7050 aluminum sheet is T7651, which combines high strength, good spalling corrosion resistance and average SCC resistance. It has better resistance to SCC and excellent peeling resistance at lower strength levels.

7050 alloy is developed on the basis of aluminum-zinc-magnesium alloys. To improve the strength of the alloy, the only way to increase the concentration of zinc and magnesium. But after the content of Zn+Mg ≥ (8-9)%, although the strength can be increased to more than 600N/mm2, the plasticity and stress corrosion resistance are strongly reduced, and the use value is lost.

Later, it was discovered that copper can effectively improve the plasticity and corrosion resistance of high-concentration aluminum-zinc-magnesium alloys. Especially after chromium can significantly improve the stress corrosion resistance, aluminum-zinc-magnesium-copper alloys have been developed, which creates a condition for the birth of 7050 aluminum alloy.

It has lower quenching sensitivity and strength retention in thick plate. so it is particularly suitable for thick plate applications (3" to 6" thick). Therefore, 7050 aluminum alloy plate is the first choice for making fuselage frames, bulkheads and wing skins.

7050 alloy has high plasticity, plane strain fracture toughness and low quenching sensitivity, becoming a kind of aircraft aluminium sheet and forging aluminum alloy with the best comprehensive performance.

7075 aluminum plate is a super hard aluminum alloy with good wear resistance. Al 7075 t651 has stronger strength than mild steel, and is known as the best product among aluminum alloys. The main applications are aerospace, mold processing, mechanical equipment, tooling and fixtures, especially for the manufacture of aircraft structures and other high-stress structures that require high strength and strong corrosion resistance.