The density of aluminum is very small, only 2.7g/cm. Although it is soft, it can be made into all kinds of aluminum alloys, such as hard aluminum, superhard aluminum, antirust aluminum, cast aluminum and so on.
2, aluminum is a good good conductor of heat, and its thermal conductivity is 3 times larger than iron. Aluminum can be used in industry to make various heat exchangers, heat dissipation materials and cookers.
3, aluminum has good ductility (its ductility is second only to gold and silver), and can be made into aluminum foil thinner than 0.01mm at 100 to 150. These aluminum foils are widely used in packaging cigarettes, candies, etc., and can also be made of aluminum, aluminum, and all kinds of aluminum products.
4, the conductivity of aluminum is only inferior to that of silver and copper. Although its conductivity is only 2/3 of copper, its density is only 1/3 of copper. So the quality of transporting the same amount of electricity and aluminum wire is only half of that of copper wire. The oxide film on the surface of aluminum is not only corrosion-resistant, but also has certain insulation. Therefore, aluminum is widely used in electrical manufacturing industry, wire and cable industry and radio industry.