2022-10-26 https://www.aluminum-coils.com/a/7075-aviation-aluminum-plate.html
The 7075 alloy is the most typical super-hard aviation aluminum plate. The commonly used alloys are the 7075/7175/7475 alloy. The 7175 alloy is cleaner than the 7075 alloy and the 7475 alloy is cleaner. That is, their impurity content is lower than one, such as the 7475 alloy. The silicon content is only 25% of the 7075 alloy, which is 0.30 percentage points smaller than that of the 7075 alloy, so the 7475 alloy has higher toughness and better comprehensive properties.
High hardness alloy—7075 aviation aluminum alloy plate is an aluminum-zinc-magnesium-copper series heat treatment-reinforced high-strength deformed aluminum alloy. It can be used to process all semi-finished products and is used to manufacture a variety of structural parts, especially aerospace structural parts. It is used today The widest range of high-strength aluminum alloys, up to the long fuselage of the front fuselage of the large aircraft, passenger forging window frame forgings, sheet metal bends and long beams of the middle fuselage, keel beam webs, floor turning beams, middle and rear fuselage beams, passengers Observe the window frame forgings, cargo compartment door frames, front pressure frame edge heads, cabin door frames, etc .; as small as the phone case.
It has various heat treatment states: T6, T73, T76, T77. T6 state materials have the highest mechanical strength properties, but have low fracture toughness, are sensitive to stress corrosion, and because their toughness decreases with decreasing temperature, T6 state materials are not suitable for manufacturing low temperature structural parts and workpieces; T73 materials have the lowest strength However, it has quite high fracture toughness, good resistance to stress cracking and spalling corrosion resistance; T76 material has higher strength than T73 material and higher resistance to stress corrosion cracking than T6 material. The static strength performance of 7075 alloy is higher than that of 2024 and 2124 alloys, and its fatigue performance is comparable to it. O-state and W-state materials have good room temperature moldability.
