3003 is an AL-Mn alloy, which is the most widely used type of rust resistant aluminum. The strength of this alloy is not high (slightly higher than industrial pure aluminum) and cannot be strengthened by heat treatment. Therefore, cold working methods are used to improve its mechanical properties: it has high plasticity in the annealing state, good plasticity in semi cold work hardening, low plasticity in cold work hardening, good corrosion resistance, good weldability, and poor machinability.
3003 aluminum tube has good formability, solubility, and corrosion resistance. Used for processing parts that require good formability, high corrosion resistance, and good weldability, or for work that requires both these properties and higher strength than 1XXX series alloys.