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Copper/ Aluminum/CCAW properties
ltom Copper Aluminum CCAW-15%
Volume Conductivity (IACS,20°C) 100.0% 61.8% 67%
Volume Resistivity (Ω-m,20°C) 文本框: -8 1.724×10-8 文本框: -8 2.740×10-8 2.573×10-8
Specific heat(cal/g,20°C) 0.092 0.215 0.149
Coefficient of Linear Expansion (°C,20°C) 17×10-6 24×10-6 21.9×10-6
Density(g/cm3,20°C) 8.89 2.70 3.63
Thermal conductivity(cal/cm sec,°C,20°C) 0.053 0.094 0.059
Tensile stength(kg/mm2) 22-27 7-11 10-14

Benefits if copper conductor exchange to Aluminum conductor

1. The thermal temperature of Aluminum insulator 20 °Chigher than copper thermal
temperature because of Aluminum oxide film effects a good insulator in the
insulation system. ( reference to UL and Arrhenius Curve )

2. Aluminum coils can be expected longer than the average insulation life of copper
coil bacause of the alunimun quickly forms a very tight oxide skin that is also
insulator.

3. One of the big advantage of Aluminum is reducing non-ferrous material cost, less shipping damage of it's products and easier to mount in the fixture because of Aluminum lighter than 1/3 the weight copper.


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