1. Low density
Aluminum has a density of 2.7g/cm³ (one-third of the density of iron and copper), good ductility, and two-thirds of the conductivity of copper wire, but the quality is only one-third, and the price is cheaper. It is widely used in the manufacturing of high-voltage wire, cable and radio industry. The density of pure aluminum is relatively low, but the density and hardness of aluminum alloy have been greatly improved. At present, aluminum alloy has been widely used in aircraft, automobiles, trains, ships and other manufacturing industries. In addition, space rockets, space shuttle, artificial satellites also use a lot of aluminum and aluminum alloys.
2. Hot conductor
Aluminum is a good conductor of heat (conductivity is 3 times greater than iron), aluminum can be used in industry to make a variety of heat exchangers, cooling materials and cookware.
3. Ductility
Aluminum has good ductility (second only to gold and silver), can be made of aluminum foil thinner than 0.01mm at 100 ℃ ~ 150 ℃. These aluminum foil is widely used in packaging cigarettes, candy, etc., can also be made into aluminum wire, aluminum strip, and can roll a variety of aluminum products.
4. Corrosion resistance
In air, aluminum forms a dense oxide coating that makes it resistant to corrosion and is used in medical devices, chemical reactors, refrigeration units, oil refining units, and oil and gas pipelines.
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