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The density of pure aluminum ingots is small, about 1/3 of that of iron, and the melting point is low. Aluminum is a face-centered cubic structure, so it has high plasticity. Aluminum alloy profiles are easy to process and can be made into various profiles and plates. It has good corrosion resistance, but the strength of pure aluminum is very low, so it is not suitable for structural materials. Through long-term production practice and scientific experiments, people gradually strengthen aluminum by adding alloy elements and using heat treatment methods, which has obtained a series of aluminum alloys. The alloy formed by adding certain elements can have higher strength while maintaining the advantages of pure aluminum such as light weight, which makes its “specific strength” better than many alloy steels, making it an ideal structural material, widely used in aerospace materials, building profiles, industrial profiles, equipment manufacturing, machinery and equipment manufacturing, and transportation industries.
