Aluminum is a silver-white metal in the earth's crust after oxygen and silicon content in third place. The density of aluminum is small, only 2.7103 kg / m3, approximately one-third of the density of steel, copper or brass, it is also referred to as a light metal.It is used in the manufacture of automobiles, trains, subways, ships, aircraft, rockets, spacecraft and other land, sea and air transport, to reduce weight increased loading capacity. Aluminum are also widely used in the military.
