What are the different types of aluminum coil?

Aluminum coils are categorized based on their thickness, alloy composition, surface treatment, and temper. The main types include: 1) Thickness-based: thin gauge, medium gauge, and thick gauge coils. 2) Alloy composition: 1000 series (99% aluminum), 3000 series (aluminum-manganese), 5000 series (aluminum-magnesium), 6000 series (aluminum-silico-magnesium), and 7000 series (aluminum-zinc). 3) Surface treatment: mill finish, anodized, painted, and coated. 4) Temper: O (annealed), H (strain hardened), W (solution heat treated), and T (thermally treated to various strengths). Each type serves specific industries such as construction, automotive, packaging, and aerospace.