Aluminum alloy is one of the most widely used antirust aluminum. Its strength is not high enough to be strengthened by heat treatment. In the annealed state, it has high plasticity, good corrosion, good weldability and poor machinability. Rustproof aluminum (A 1-Mn and Al-Mg alloys) can be divided into wrought aluminum alloy and cast aluminum alloy according to processing methods. Wrought aluminum alloys can be divided into non-heat treated aluminum alloys and heat treated aluminum alloys. Non-heat treatment strengthening type can not improve mechanical properties through heat treatment, but only through cold working deformation, mainly including high-purity aluminum, industrial high-purity aluminum, industrial passivation aluminum, rust-proof aluminum and so on. Heat-treatable strengthened aluminum alloys can improve their mechanical properties by means of heat treatment such as quenching and aging, which can be divided into hard aluminum, forged aluminum, superhard aluminum and special aluminum alloys.
Al-Mg alloy and Al-Mn alloy are collectively called rust-proof aluminum because the alloy composition between them improves the corrosion resistance. Al-Mn alloys are represented by 3003 (widely used), 3004 (usually used for cans) and 3 105 (used for wires and other high conductivity requirements).
The tank body of 3004 all-aluminum tank requires parts with higher strength than 3003 alloy, chemical products production and storage equipment, sheet metal processing parts, building processing parts, building tools and various lamps and lanterns parts.