Aluminum alloy has excellent thermal conductivity, thermal conductivity of aluminium alloy is about 200 W/m-K, which is about three times higher than that of general steel and about six times higher than that of stainless steel. This characteristic makes aluminium alloy excellent in heat dissipation and thermal conductivity, and is widely used in various fields that require rapid heat dissipation and thermal conductivity, such as electronic products, automobiles, and construction.

thermal conductivity of aluminium alloys

Different grades of aluminum alloys have different thermal conductivity properties. In general, the thermal conductivity of aluminium alloys depends on their chemical composition and microstructure. For example, the thermal conductivity of pure aluminum is about 237 W/m-K, while that of aluminum alloys of the 1xxx series (e.g. 1050A) is about 231 W/m-K, that of aluminum alloys of the 2xxx series (e.g. 2014) is about 110-170 W/m-K, and that of aluminum alloys of the 3xxx series (e.g. 3003 aluminum sheet) is about 120-180 W/m-K. It should be noted that the thermal conductivity of different grades of aluminum alloys may vary, and the specific values may vary depending on factors such as alloy composition, microstructure and heat treatment state.


Applications where the thermal conductivity of aluminium alloys needs to be taken into account are:

Heaters, radiators and other heat exchange equipment:

Aluminum alloys have good thermal conductivity and fast heat dissipation, which can improve heating and heat dissipation efficiency.

Automobile manufacturing industry:

Aluminum alloy has the advantages of light weight, high strength, good thermal conductivity, etc. It is often used to manufacture automobile engine hood, doors, frames and other parts to reduce the quality of the whole vehicle and improve fuel economy. In addition, aluminum alloy can be used as a cooler material to solve the problem of heat dissipation in automobiles.


Aluminum alloy, as a lightweight material, has a wide range of applications in the aerospace field. For example, the fuselage, engine, wings and other parts of the aircraft are often made of aluminum alloy materials to reduce weight and improve fuel economy. At the same time, aluminum alloys also have better thermal conductivity and can be used to make radiator parts for aerospace vehicles.

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