How important is the role of aluminium, do you know?

1. The density of aluminium is very small, only 2.7g/cm. Although it is relatively soft, it can be made into various aluminium alloys, such as hard aluminium, super hard aluminium, rust-proof aluminium, cast aluminium and so on. These aluminium alloys are widely used in the manufacturing industry of aircraft, automobiles, trains, ships and so on. In addition, a large amount of aluminium and its aluminium alloys are also used in space rockets, space shuttles and artificial satellites. For example, a supersonic aircraft is made up of about 70% aluminium and its aluminium alloys. A large number of aluminium is also used in the construction of ships, and the amount of aluminium used in a large passenger ship often amounts to several thousand tons.

2. Although its conductivity is only 2/3 of that of copper, its density is only 1/3 of that of copper, so the quality of aluminium wire is only half of that of copper wire when the same amount of electricity is transmitted. Aluminum surface oxide film not only has the ability to resist corrosion, but also has a certain degree of insulation, so aluminum in the electrical manufacturing industry, wire and cable industry and radio industry has a wide range of uses.

3. aluminium is a good conductor of heat, its thermal conductivity is 3 times greater than iron, industry can be used to manufacture a variety of heat exchangers, heat dissipation materials and cookware, etc..

3. aluminium has a good ductility (its ductility is second only to gold and silver), in 100 ℃ ~ 150 ℃ can be made of thin than 0.01mm aluminum foil. These aluminum foils are widely used for packaging cigarettes, candy, etc., and can also be made into aluminum wire, aluminum strips, and can be rolled into a variety of aluminum products.????

5. The surface of aluminium is not easy to be corroded because of the dense oxide protective film, and is often used to manufacture chemical reactors, medical devices, refrigeration devices, petroleum refining devices, oil and gas pipelines, etc.

6. Aluminum plate on the light reflection performance is also very good, reflecting ultraviolet than silver, the more pure aluminum, the better its reflective ability, so often used to manufacture high-quality reflector, such as solar stove reflector.

7. Aluminum has sound-absorbing properties, acoustic effect is also better, so the broadcasting room, modern large building indoor ceiling, etc. also use aluminum.

8. Low temperature resistance, aluminum in the low temperature, its strength instead of increasing without brittleness, so it is ideal for low temperature device materials, such as refrigerated storage, freezing storage, Antarctic snow vehicles, hydrogen oxide production equipment.