​What are the characteristics of aluminum alloy material?

  In the application of aluminum alloy in many industries, we often hear that the keychain bracket car uses all aluminum to reduce weight, in fact, the so-called "all aluminum" here also refers to aluminum alloy. So why use aluminum? On the one hand, reduce the weight, on the other hand, aluminum alloy is a kind of material that is easy to recycle, which also makes life easier and more environmentally friendly. Let's take a look at what are the characteristics of aluminum alloy materials and what are the main uses of aluminum.

Light weight: The density of aluminum alloy is about 2.7g/cm³, lower than many of our common metals, such as iron (density about 7.86g/cm³), copper (density about 8.96g/cm³), only about one-third of steel, which makes it in aerospace, automotive manufacturing and other fields also has a great advantage, can effectively reduce weight, Improve transportation efficiency and energy efficiency.

High strength: Although the strength of aluminum alloy varies due to the alloy composition and processing technology, in general, after a reasonable alloying and heat treatment, aluminum alloy can obtain a higher strength, while maintaining a lighter weight, higher specific strength, so that it can be used to manufacture some structural parts that require both high strength and light weight.

Strong corrosion resistance: Aluminum alloy is easy to react with oxygen in the air, forming a layer of dense alumina film on the surface, this layer of oxide film can prevent the internal metal from being further oxidized, so that it has good corrosion resistance, can resist the erosion of atmosphere, water and some chemical substances, suitable for manufacturing outdoor building components, car bodies and other long-term exposure to the natural environment parts.

Easy processing molding: Aluminum alloy has good plasticity and machinability, can be processed into various shapes and sizes of products through rolling, extrusion, forging, casting, machining and other processes to meet the needs of different application fields, but also through stamping, drawing and other processes to produce complex shape parts, and processing costs are relatively low.

Good thermal and electrical conductivity: aluminum alloy has excellent thermal and electrical conductivity, its thermal conductivity is about 100-250W/(m · K), and its electrical conductivity is second only to a few metals such as silver, copper and gold, so it has been widely used in electrical, electronic and other fields, such as wire and cable, radiator and so on.

Recyclability: Aluminum alloy has a high recycling value, recycling energy consumption is only about 5% of the primary aluminum production energy consumption, and the recovered aluminum alloy performance loss is small, can be reused for the production of various aluminum alloy products, is conducive to saving resources and protecting the environment.

Good surface treatment performance: Aluminum alloy can be anodized, electrophoretic coating, powder spraying and other surface treatment methods to obtain different colors, gloss and performance of the surface coating, which can not only further improve its corrosion resistance, wear resistance, but also increase the beauty, to meet the individual needs of different users.

Good low temperature performance: in the low temperature environment, the strength and toughness of aluminum alloy will not be reduced, but will be improved, so it is suitable for manufacturing some equipment and components that need to work at low temperatures, such as refrigeration equipment, aerospace low temperature parts, etc.

  What are the main uses of aluminum

1, the density of aluminum is very small, only 2.7g /cm, although the material is soft, it can be made of various aluminum alloys, such as duralumin, super duralumin, rust-proof aluminum, cast aluminum and so on. These aluminum alloys are widely used in automobile, train, metal products and other manufacturing industries.

2, the electrical conductivity of aluminum is second only to silver and copper, although its conductivity is only 2/3 of copper, but the density is only 1/3 of copper, so the same amount of electricity, the quality of aluminum wire is only half of copper wire. The oxide film on the surface of aluminum not only has corrosion resistance, but also has certain insulation, so aluminum has a wide range of uses in the electrical appliance manufacturing industry, wire and cable industry and radio industry.

3, aluminum is a good conductor of heat, its thermal conductivity is 3 times greater than iron, industrial aluminum can be used to manufacture a variety of heat exchangers, heat dissipation materials and cookware and household goods.