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

But the strength of pure aluminum is very low, the annealed 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 strengthen aluminum by adding alloying elements and applying heat treatment, etc., which results in a series of aluminum alloys. The alloy formed by adding certain elements can maintain the advantages of pure aluminum such as light weight and at the same time have high strength, σb value can reach 24~60kgf/mm2 respectively, which makes its "specific strength" (the ratio of strength and specific gravity σb/ρ) better than many alloy steel, and become an ideal structural material, widely used in It is widely used in machinery manufacturing, transportation machinery, power machinery and aviation industry, etc. Aircraft fuselage, skin and compressor are often made of aluminum alloy to reduce the weight. The weight of the structure can be reduced by more than 50% by using aluminum alloy instead of welding steel plate.

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Density of aluminum in several selected density measurement units.
Density of aluminum g cm3=2.7 g/cm³
Density of aluminum g ml=2.7 g/ml
Density of aluminum g mm3=0.0027 g/mm³
Density of aluminum kg m3=2699 kg/m³
Density of aluminum lb in3=0.098 lb/in³
Density of aluminum lb ft3=168.49 lb/ft³
See Aluminum density in hundreds of density measurement units grouped by weight.






 

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