7 Series Aluminum Classification and Application Field

7 series aluminum features:

Zinc is predominant, but magnesium and copper are sometimes added in small quantities. The superhard aluminum alloy contains the hardness of zinc, lead, magnesium and copper alloys close to the steel. The extrusion speed is slower than that of the 6-series alloy and the welding performance is good. The 7005 and 7075 are the highest grades in the 7 Series and are heat treatable.

Applications: Aerospace (aeroplane bearing members, landing gear), rockets, propellers, aviation ships.

7005 Extrusion materials for the manufacture of welding structures that require both high strength and high fracture toughness, such as trusses, rods, and containers for transport vehicles; large heat exchangers, and cannot be melted after welding Parts; can also be used to make sports equipment such as tennis rackets and softball bats

7039 Freezing Vessels, Cryogenic Instruments and Storage Boxes, Fire Pressure Equipment, Military Equipment, Armour Plates, Missile Devices

7049 is used to forge parts that have the same static strength as the 7079-T6 alloy and require high resistance to stress corrosion cracking, such as aircraft and missile parts - landing gear cylinders and extrusions. The fatigue performance of the part is roughly equal to that of the 7075-T6 alloy, while the toughness is slightly higher

7050 Aircraft structural parts use plate, extrusions, free forgings and die forgings. The requirements for the manufacture of such parts on alloys are: resistance to exfoliation corrosion, stress corrosion cracking, fracture toughness, and fatigue resistance

7072 aluminum foil and ultra-thin tape for air conditioner; coating of 2219, 3003, 3004, 5050, 5052, 5154, 6061, 7075, 7475, 7178 alloy sheet and pipe

7075 used in the manufacture of aircraft structures and futures. He requires high-strength structural parts and molds with high strength and strong corrosion resistance.

7175 For high-strength structural forging aircraft. T736 material has good comprehensive performance, namely strength, anti-stripping corrosion and stress corrosion cracking resistance, fracture toughness, fatigue strength are high

7178 Requirements for manufacture of aerospace vehicles Parts with high compressive yield strength

7475 aluminum and aluminum-clad plates, wing frames, purlins, etc. Other components that have both high strength and high fracture toughness

7A04 aircraft skin, screws, and stressed components such as girders, bulkheads, ribs, landing gear and so on.