Alloy 2024. Has largely superceded 2017 for. General 2024 characteristics and uses (from alcoa):.

Aluminum alloy 2024 is an alloy made up primarily of aluminium (90% to 99%), copper (1% to 6%), iron (0.5% to 1%) and magnesium (0.5%). It is used as aircraft skins, cowls, and aircraft structures, among others.