7 series aluminum features:
Mainly zinc, but sometimes a small amount of added magnesium, copper. Among them, super hard aluminum alloy contains zinc, lead, magnesium and copper alloy close to the hardness of steel. Extrusion speed is slower than 6 series alloy, good welding performance. The 7005 and 7075 are the higher grades in the 7 series, which can be strengthened by heat treatment.
Application: aviation (aircraft bearing components, landing gear), rockets, propellers, aircraft.
The 7005 extruded materials are used to manufacture welded structures with high strength and fracture toughness, such as trusses, rods and containers for transport vehicles. Large heat exchangers and components that cannot be solid melted after welding; It can also be used to make sports equipment such as tennis rackets and softball bats
Refrigerating vessel, cryogenic apparatus and storage box, fire fighting pressure apparatus, military apparatus, loading deck, missile apparatus
The 7049 is used for forging components with the same static strength as the 7079-t6 alloy that require high stress corrosion cracking resistance, such as aircraft and missile components - landing gear cylinders and extrusion parts. The fatigue performance of the parts is approximately equal to that of the 7075-t6 alloy, while the toughness is slightly higher
Medium and heavy plates, extrusion parts, free forgings and die forgings for aircraft structural parts. In order to manufacture this kind of parts, the alloys are required to have high resistance to spalling corrosion, stress corrosion cracking, fracture toughness and fatigue resistance
7072 air conditioner aluminum foil and extra-thin strip; Cladding layer of alloy plates and pipes: 2219, 3003, 3004, 5050, 5052, 5154, 6061, 7075, 7475 and 7178
For the manufacture of high-stress structural parts and molds with high strength and strong corrosion resistance required by aircraft structures and futures
The 7175 is a high-strength structural used for forging aircraft. T736 material has good comprehensive performance, namely high strength, anti-spalling corrosion and anti-stress corrosion cracking performance, fracture toughness and fatigue strength
Parts and components with high compressive yield strength required for the manufacture of aerospace spacecraft
Aluminum clad and unaluminum clad panels for the fuselage of 7475, wing frames, girders, etc. Other parts with high strength and high fracture toughness
A04 aircraft skin, screws, and stressed components such as girder truss, frame, wing rib, landing gear, etc.