Aluminum sheets can also be used to make bulkheads, ribbing, and floor structures inside the aircraft. These components provide structural integrity to the aircraft.
Different aircraft have different requirements for skins. Aluminum alloys commonly used for aircraft skins include 2024 aluminum alloy, 7050 aluminum alloy, and 7475 aluminum alloy. These aluminum alloys have a certain degree of strength, corrosion resistance, and toughness.