Aviation Aluminum Used Grade Commonly：
2024-T351 （For Aviation Aluminum）
Grade 2024-T3 is the most common high-strength aluminium alloy. It belongs to aircraft quality. It has excellent fatigue resistance even though its corrosion resistance is lower than that of 6061. The fuselage, wing skins, aircraft structure, and cowls of most airplanes use aluminum alloy sheets. It's also ideal for repairs and restoration because it has a shiny finish.
6061-T651 （For Aircraft Aluminum）
This alloy has high corrosion resistance and finish. is easy to weld and has almost the same strength as mild steel. Mats in aircraft, truck bodies, and frames as well as structural components often use grade 6061-T6. It can be fabricated using the most common techniques which is an excellent property.
7075-T351（For Aviation Aluminum）
The primary role of this aluminum alloy is to strengthen aluminum aircraft structures. a careful mixture of copper, magnesium, and zinc made this alloy,to give it extra strength.However, because of copper, it is difficult but not impossible to weld. Once anodized, it has a beautiful finish and has the best machinability.
In addition to aircraft aluminum applications, spacecraft also use aluminum .Its unique properties are of even more value in this application.Up to 90% aluminum components made spacecraft. Space stations like the Skylab also use material and is expected to make even more appearances in manned space exploration.