Aluminum vs. Copper / Brass article by U S Radiator: The thermal conductivity or heat transfer rate of copper is 92% versus aluminum which is approximately 49%. Copper has high thermal conductivity and therefore is able to constantly supply heat from the peripheral parts of the sheet to the place cooled by the ice cube. However, the copper fin bonded to the tubes, or water passages, using lead solder is very inefficient and slows the heat transfer rate to just slightly better than that of aluminum. The advantage of this experiment is the possibility to go without the thermosensitive films. Copper Heat Sinks. All values should be regarded as typical, since these properties are dependent on the particular type of alloy, heat treatment, and other factors. This Table gives typical values of thermal several common commercial metals and alloys. Copper has even better thermal conductivity than aluminum. Values refer to ambient temperature (0 to 25°C). This ability is significantly worse in the brass sheet. Most of copper element is used in manufacturing electrical and electronic equipments such as wirings and components. Aluminum is used in a various products; for example, cans, foils, kitchen utensils, window frames, beer kegs and aero plane parts, automobile parts, etc. It’s drawbacks, though, are weight and cost. It is also used in construction and industrial machine. The values depend on the temper of the alloy. Aluminium alloys 6060 and 6063 are commonly used, with thermal conductivity values of 166 and 201 W/m•K, respectively.
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