what is the 2a12 aluminum round bar rod
2a12 aluminum round bar rod
2a12 aluminum round bar rod is a kind of high-strength hard aluminum which can be heat-treated and strengthened. It has medium plasticity in annealing, quenching and hot state. It has good spot welding and good tendency to form intergranular cracks when using gas welding and argon arc welding. The alloy is quenched. After cutting and hardening, the machinability is good and it is not good in the annealed state. The corrosion resistance is not high, and the anodizing treatment and painting method or the surface is coated with an aluminum layer to improve the corrosion resistance.
chemical composition
Silicon Si: ≤0.50
Copper Cu: 3.8~4.9
Magnesium Mg: 1.2~1.8
Zinc Zn: ≤0.30
Manganese Mn: 0.30~0.9
Titanium Ti : ≤ 0.15
Nickel Ni: ≤0.10
Iron Fe: 0.000~ 0.500
Iron + nickel Fe+Ni: 0.000~ 0.500
Application purpose
Used in applications requiring high strength and hardness (including high temperature). Heavy forgings, slabs and extruded materials for aircraft structural parts, multi-stage rocket first-stage fuel tanks and spacecraft parts, wheels, truck frames and suspension system parts.
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