The specific gravity of aluminum is 2.7, and the density is 2.72g/cm3, which is about 1/3 of ordinary metal. The mechanical properties of industrial pure aluminum are not only related to the purity, but also related to the processing state of the material. Because aluminum has good plasticity and ductility, it is convenient for all kinds of cold and hot pressure processing. It can be made into aluminum foil with a thickness of only 0.006 mm, or it can be cold-drawn into extremely fine wire. By adding other elements, aluminum can be alloyed and hardened, and its strength can even exceed that of structural steel, but it still maintains the advantage of light weight.

Aluminum ingot production includes bauxite mining, alumina production and aluminum electrolysis.