Aluminum

Element, chemical symbol Al. A lightweight yet strong silvery white elemental metal that is ductile and malleable, resistant to corrosion, but susceptible to attack by acids and alkalis. Produced from alumina and possessing good tensile strength, it is a good conductor of electricity. It is used to make transportation, packaging building, electrical and consumer durable products. In steel making, it is primarily used as a deoxidixer and austenitic grain refiner. In increased amounts, it combines readily with nitrogen to form aluminum nitrides, which contribute to high surface hardness and superior wear resistance.