The main uses of aluminum

Aluminum's light weight and corrosion resistance are two prominent characteristics of its performance.
1. The density of aluminum is very small, only 2.7g/cm ³, Although it is relatively soft, it can be made into various aluminum alloys, such as hard aluminum, superhard aluminum, rust proof aluminum, cast aluminum, etc. These aluminum alloys are widely used in manufacturing industries such as airplanes, cars, trains, and ships. In addition, space rockets, shuttles, and artificial satellites also use a large amount of aluminum and its alloys. For example, a supersonic aircraft is composed of approximately 70% aluminum and its aluminum alloys. Aluminum is also widely used in shipbuilding, and the amount of aluminum used in a large passenger ship often reaches several thousand tons.
2. Aluminum has conductivity second only to silver, copper, and gold. Although its conductivity is only 2/3 of copper, its density is only 1/3 of copper. Therefore, when transporting the same amount of electricity, the mass of aluminum wire is only half that of copper wire. The oxide film on the surface of aluminum not only has the ability to resist corrosion, but also has a certain degree of insulation, so aluminum has a wide range of applications in the electrical manufacturing industry, wire and cable industry, and wireless industry.
3. Aluminum is a good conductor of heat, with a thermal conductivity three times greater than iron. In industry, aluminum can be used to manufacture various heat exchangers, heat dissipation materials, and cookware.
4. Aluminum has good ductility (second only to gold and silver), and can be made into aluminum foil thinner than 0.01mm at temperatures ranging from 100 ℃ to 150 ℃. These aluminum foils are widely used for packaging cigarettes, candies, etc. They can also be made into aluminum wires and strips, and can be rolled into various aluminum products.
5. The surface of aluminum, due to its dense oxide protective film, is not easily corroded and is often used to manufacture chemical reactors, medical devices, refrigeration devices, petroleum refining devices, petroleum and natural gas pipelines, etc.
6. Aluminum powder has a silver white luster (usually the color of metals in powder form is mostly black), and is commonly used as a coating, commonly known as silver powder or silver paint, to protect iron products from corrosion and be beautiful.