What are the characteristics and uses of aluminum alloy

What are the characteristics and uses of aluminum alloy

The application of aluminum alloy in the automotive industry is also relatively early, we often hear about what expensive cars are using all-aluminum body to reduce weight, and the all-aluminum here actually refers to our common aluminum alloy. So why use aluminum? Because aluminum alloy can reduce the weight of the car in order to reduce fuel consumption, on the other hand, aluminum alloy has a good recycling effect, so in the later maintenance, it will be more environmentally friendly. Today, the small edition of aluminum alloy processing takes you to see the characteristics and uses of aluminum alloy.

What are the characteristics of aluminum alloy material

1. Aluminum alloy is light and soft. The density of aluminum is 2171 g/ cm3, about one-third of the density of steel (7187 g/ cm3); Young's modulus is also about one-third that of steel.

2, good strength. The tensile strength of pure aluminum is about 80 MN/ m2, which is one-fifth of the low carbon steel. However, after heat treatment strengthening and alloying strengthening, its strength will increase greatly. Such as aluminum alloy car body commonly used material 6005A-T6, its tensile strength is at least 360 MN/ m2, can reach the corresponding strength value of low carbon steel.

3, good corrosion resistance. One of the characteristics of aluminum alloy is that the surface will form a dense oxide film when it contacts the air, which can prevent corrosion, so the corrosion resistance is good. If the "alumina film treatment method" is implemented, corrosion can be completely prevented.

4, good processing performance. Railway rolling stock profile extrusion performance is good, can be secondary machining, bending processing is easier.

5, easy to regenerate. The melting point of aluminum is low (660 ℃) and the regeneration is simple. In the disposal of waste is also pollution-free, conducive to environmental protection, and in line with sustainable development strategy.

According to the aluminum alloy car body structure and manufacturing, application, the selection of materials should follow the following principles:

1) From the perspective of lightweight, it requires good strength, weldability, extrusion processability and maintenance;

2) From the perspective of life, it requires corrosion resistance and high surface handling;

3) From the perspective of manufacturing efficiency, it requires high weldability, extrusion processability and molding processability.

What are the main uses of aluminum

1, the density of aluminum is very small, only 2.7g /cm, although it is relatively soft, but can be made of various aluminum alloys, such as hard aluminum, super hard aluminum, rust-proof aluminum, cast aluminum and so on. These aluminum alloys are widely used in aircraft, automobiles, trains, ships 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.