Principal usos de aluminio

Aluminum and aluminum alloys are currently one of the most widely used and economically applicable materials. Since 1956, the world's aluminum production has surpassed that of copper and has consistently ranked first among non-ferrous metals. The current production and consumption of aluminum (in tons) are second only to steel, making it the second largest metal used by humans; Moreover, aluminum resources are very abundant, and according to preliminary calculations, the storage capacity of aluminum deposits accounts for over 8 percent of the crustal composition.

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 resistant aluminum, cast aluminum, etc. These aluminum alloys are widely used in manufacturing industries such as airplanes, automobiles, trains, and ships. In addition, space rockets, space shuttles, and artificial satellites also use a large amount of aluminum and its alloys. For example, a supersonic aircraft is composed of approximately 70 percent aluminum and its alloys. Aluminum is also widely used in ship construction, and a large passenger ship often consumes several thousand tons of aluminum.
2. Aluminum has a conductivity second only to silver, copper, and gold. Although its conductivity is only 2/3 that of copper, its density is only 1/3 that 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, making it widely used in the electrical manufacturing industry, wire and cable industry, and radio 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 cooking utensils.
4. Aluminum has good ductility (second only to gold and silver), and can be made into aluminum foil thinner than 0.01mm at 100 degree to 150 degree . These aluminum foils are widely used to package cigarettes, candy, etc. They can also be made into aluminum wires, aluminum bars, and can roll various aluminum products.
5. The surface of aluminum is less susceptible to corrosion due to its dense oxide protective film, and is often used to manufacture chemical reactors, medical devices, refrigeration devices, petroleum refining devices, oil 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.
7. Aluminio quema en oxígeno puede dar a lote de calor y deslumbrante luz, and es es frecuente usado para producir explosivos mezclas, such as amonio aluminio explosivos (mezclados con amonio nitrato, carbón polvo, aluminio polvo, hollín y otro combustible orgánico sustancias), combustión mezclas (tal as termita bombas y proyectiles puede ser usados para atacar difícil disparar objetivos o tanques, artillería, etc. ) and iluminación mezclas (tal as bario nitrato 68 porciento , aluminio polvo 28 percent , goma laca 4 percent ).
8. Thermit is often used to melt Refractory metals and weld rails. Aluminium is also used as a Oxygen scavenger in steelmaking. Aluminum powder, graphite, titanium dioxide (or other high melting point metal oxides) are uniformly mixed in a certain ratio and coated on the metal. After high-temperature calcination, they are made into high-temperature resistant cermets, which have important applications in rocket and missile technology.