The 1000 series contains at least 99% by weight of aluminum.
2000 series copper alloy, the strength is comparable to steel. Formerly known as Dura Aluminum, it is a commonly used aerospace alloy, but it is susceptible to intergranular corrosion and is gradually replaced by the 7000 series.
3000 series manganese alloy with work hardening.
4000 series bismuth alloy, also known as bismuth aluminum.
5000 series magnesium alloy, which can solve work hardening and high strength.
6000 series magnesium-niobium alloy, easy to process, can be deposited and hardened, and the strength is comparable to steel.
7000 series zinc alloy, which can be hardened by precipitation and has the highest strength among all aluminum alloys.
8000 series mixing.
Commonly used aluminum alloy composition: