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The comparison of heat sink material
Oct 18, 2017

    Heat sink material refers to the heat sink used by the specific material. Each of the materials of its thermal conductivity is different, according to the thermal conductivity from high to low arrangement, namely silver, copper, aluminum, steel.

    But if you use silver for the heat sink will be too expensive, so the best program for the use of copper. Although aluminum is much cheaper, it is clear that the thermal conductivity is not as good as copper (about 50 percent more than copper).

    Commonly used heat sink material is copper and aluminum alloy, both have their advantages and disadvantages. Copper thermal conductivity is good, but the price is more expensive, processing more difficult, the weight is too large (many copper radiators are more than the CPU weight limit), heat capacity is small, and easy to oxidation. And pure aluminum is too soft, can not be used directly, are the use of aluminum to provide sufficient hardness, the advantages of aluminum alloy is cheap, light weight, but the thermal conductivity is much worse than the copper. Some radiators to take their own long, in the aluminum radiator base embedded in a copper plate.

For ordinary users, with aluminum heat sink has been enough to meet the cooling needs, and the more common aluminum is 6061 and 6063 aluminum, the cooling effect is better. The steel heat sink is mainly used for heating heat sinks because it is more resistant to corrosion

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