Superhard aluminum alloys are aluminum, zinc, copper and magnesium alloys. This alloy has the highest strength at room temperature. After solution treatment and aging, its strength reaches 680MPa, and its specific strength is equivalent to ultra-high strength steel, so it is named ultra-hard aluminum.

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7005 extrusion material is used to manufacture welded structures with high strength and fracture toughness, such as trusses, bars and containers of transport vehicles; Large heat exchangers, and parts that cannot be solid-solution treated after welding; It can also be used to make sports equipment, such as tennis rackets and softball bats.

7039 refrigerated containers, cryogenic instruments and storage boxes, fire-fighting pressure equipment, military equipment, armor plates and missile devices.

7049 is used for forging parts which have the same static strength as 7079-T6 alloy and require high stress corrosion cracking resistance, such as aircraft and missile parts-landing gear hydraulic cylinders and extrusions. The fatigue performance of the parts is almost the same as that of 7075-T6 alloy, but the toughness is slightly higher.

Plates, extrusions, free forgings and die forgings of 7050 aircraft structural parts. The requirements of alloy for manufacturing such parts are: high spalling corrosion resistance, stress corrosion cracking ability, fracture toughness and fatigue resistance.

Aluminum foil and ultra-thin strip of 7072 air conditioner; Cladding of 22 19, 3003, 3004, 5050, 5052, 5 154, 606 1, 7075, 7475, 7 178 alloy plates and tubes.

7075 is used to manufacture aircraft structures and futures. He requires high-stress structural parts and molds to have high strength and strong corrosion resistance.

7 175 is used for forging high-strength structures of aircraft. T736 material has good comprehensive properties, namely, high strength, spalling corrosion resistance, stress corrosion cracking resistance, fracture toughness and fatigue strength.

7 178 is used to manufacture high compression yield strength parts of aerospace vehicles.

Aluminum clad and non-aluminum clad plates, wing frames, longitudinal beams, etc. For the 7475 fuselage. Other parts with high strength and fracture toughness.

7A04 aircraft skin, screws and stress parts, such as girders, frames, ribs, landing gear, etc.