Due to its abundant reserves and excellent properties, aluminium is widely used in industry and our daily life. In this article, we will take a close look at the top 10 properties of aluminium and its applications.
The density of aluminium is 2.7g / cm³, which is only one-third of the density of iron and copper. And aluminium has good ductility, with two-thirds of the electrical conductivity of copper wire, but the quality is only one-third of copper, and the price is cheaper than copper. Therefore, aluminum is widely used in the manufacture of high-voltage wires, cables, and the 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, automobile, train, ship, and other manufacturing industries. In addition, space rockets, space shuttles, and satellites also use a large amount of aluminum and aluminum alloys.
Aluminum is a good conductor of heat (the thermal conductivity is three times greater than iron). Industrially, aluminum can be used to make various heat exchangers, heat sinks, cooking utensils, and so on.
Aluminum has good ductility (second only to gold and silver), and it can be made into aluminum foil thinner than 0.01 mm at 100 ℃ ~ 150 ℃. These aluminum foils are widely used for packaging cigarettes, candies, etc.
In the air, aluminum will form a dense oxide protective film on the surface to make it resistant to corrosion, so it is often used to make medical devices, chemical reactors, refrigeration equipment, petroleum refining equipment, oil and gas pipelines, etc.
Thermite is often used for smelting refractory metals and welding rails. Aluminium is also used as a deoxidizer in steelmaking. Aluminum powder, graphite, titanium dioxide (or other high melting point metal oxides) are uniformly mixed at a certain ratio, coated on the metal, and calcined at high temperature to make high-temperature resistant cermets, which have important applications in rocket and missile technology.
The combustion of aluminum in oxygen can release a lot of heat and dazzling light. It is often used to make explosive mixtures, such as ammonium-aluminum explosives (mixed with aluminum powder, ammonium nitrate, charcoal powder, smoke black, and other combustible organic substances), combustion mixture (For example, bombs and artillery shells made of aluminizing agents can be used to attack difficult-to-fire targets or tanks, artillery, etc.) and lighting mixtures (such as 28% aluminum powder, 68% barium nitrate, and 4% shellac).
Aluminum powder has a silvery-white luster (generally, the color of the metal in powder is mostly black). It is commonly used as a coating, commonly known as silver powder and silver paint to protect iron products from corrosion.
At low temperatures, the strength of aluminum increases without becoming brittle, so it is ideal for low-temperature device materials, such as refrigerators, freezers, Antarctic snow vehicles, and hydrogen oxide production devices.
The aluminum plate also has good light reflection performance. It reflects ultraviolet light more strongly than silver. The purer the aluminum, the better its reflection ability. Therefore, it is often used to make high-quality mirrors, such as solar stove mirrors.
Aluminum has good sound absorption performance, so broadcast rooms, modern large building interior ceilings, etc. also use aluminum. In many homes, aluminum windows and doors are used for this purpose.
Thank you for reading our article and we hope you’ve enjoyed it. If you want to know more about the properties of aluminium or the applications of aluminium, you can visit Advanced Refractory Metals for more information. We provide our customers with high-quality aluminum products at a very competitive price.
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