Properties of aluminium
Having a rare set of unique properties such as strength, lightness, corrosion resistance, recyclability, formability, etc., aluminum can be used in a large number of applications. Commercial aluminum (with 99% to 99.6% purity) with small amounts of silicon and other components is strong and durable. Ductile and highly malleable, aluminum can be drawn into wire or rolled into thin foil. The metal is 3 times lighter than steel. Aluminum is an excellent conductor of heat and electricity. Its thermal conductivity is about one-half that of copper; its electrical conductivity is about two-thirds.