The main industrial uses of aluminum

The density of aluminum is very small, only 2.7 g/cm, although it is relatively soft, but can be made into a variety of aluminum alloy, such as hard aluminum, super hard aluminum, rust aluminum, cast aluminum and so on. These aluminum alloys are widely used in aircraft, automobiles, trains, ships and other manufacturing industries. In addition, space rocket, space shuttle, artificial satellite also use a large number of aluminum and its aluminum alloy. For example, a supersonic plane is made up of about 70 percent aluminum and its aluminum alloy. Aluminum is also used extensively in ship construction. A large passenger ship often uses several thousand tons of aluminum.

Aluminum is second only to silver, copper and gold in conductivity, and although it has only two-thirds the conductivity of copper, it is only one-third as dense, so it has only half the mass of copper wire to carry the same amount of electricity. The oxide film on the surface of aluminum not only has the ability of corrosion resistance, but also has a certain insulation, so aluminum is widely used in electrical manufacturing industry, wire and cable industry and radio industry.

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