What Is The Density Of Aluminum

The density of pure aluminum (ρ=2.7g/cm3) is relatively small, about 1/3 of iron.

But the strength of pure aluminum is very low, annealing state σb value is about 8kgf/mm2, so it is not suitable for structural materials. Through long-term production practice and scientific experiments, people gradually add alloying elements and apply heat treatment to strengthen aluminum, which gets a series of aluminum alloys. The alloy formed by adding certain elements can maintain the advantages of pure aluminum, such as light, but also have high strength, σb value can reach 24 ~ 60kgf/mm2. This makes its "specific strength" (strength and specific gravity ratio σb/ρ) is better than many alloy steel, become the ideal structural material, widely used in machinery manufacturing, transport machinery, power machinery and aviation industry, aircraft fuselage, skin, compressor and other often aluminum alloy manufacturing, in order to reduce the weight. Using aluminum alloy instead of steel welding material, the weight of the structure can be reduced by more than 50%.