3A21 aluminum alloy characteristics

3A21 aluminum plate is an Al-Mn series alloy. 3A21 aluminum plate is the most widely used anti-rust aluminum. Its strength is not high (only slightly higher than industrial pure aluminum) and cannot be strengthened by heat treatment. Therefore, cold working methods are often used to improve its mechanical properties. It has high plasticity in the annealed state, good plasticity in semi-cold work hardening, low plasticity in cold work hardening, good corrosion resistance, good weldability, and poor machinability.

Scope of application

Mainly used for low-load parts that require high plasticity and good weldability, and work in liquid or gas media, such as fuel tanks, gasoline or lubricating oil conduits, various liquid containers and other small-load parts made by deep drawing: Wire is used to make rivets. 3003 aluminum plate has good formability, weldability and corrosion resistance. It is used for processing parts and components that require good formability, high corrosion and weldability, or work that requires both these properties and higher strength than 1XXX series alloys, such as kitchenware, food and chemical products handling and storage Equipment, tanks and tanks for transporting liquid products, various pressure vessels and pipes processed with thin plates, general utensils, heat sinks, cosmetic plates, photocopier rollers, and ship materials.