The specific gravity of aluminum is 27, and its density is about 1/3 of that of ordinary metals. The electrical conductivity of commonly used aluminum wires is about 61% of that of copper, and its thermal conductivity is half that. Although it is extremely soft and ductile, it is still reliable for processing and manufacturing. Bauxite is an important source of alloying it to harden it. It takes about two pounds of bauxite to make one pound of alumina, and it takes two pounds of alumina to make one pound of aluminum metal.
According to the main component content of aluminum, it can be divided into three categories: high-grade aluminum (content 99.93%-99.999%), industrial high-purity aluminum (content 99.85%-99.90%), industrial aluminum (content 98.0%-99.7 %) Over the past five years, it has become one of the most widely used metals in the world. In the construction industry, aluminum has been widely used due to its specificity in the air and its polar appearance after anodization. It is also used in aerospace and national defense industries. The department also uses a large amount of aluminum alloy materials. In power transmission, aluminum cables reinforced with high-strength steel wires are commonly used.