Kanthal® copper clad aluminium (CCA) wires are available with 10% or 15% copper cladding over an aluminium wire core. Copper clad aluminum wires offer the inherent characteristics of aluminium while the copper cladding provides greater conduction of current and the ease of soldering of copper. Kanthal® copper clad aluminum wires are used for electrical contact material and conductors.
| Alloy | Chemical composition | Ultimate tensile strength | Electrical conductivity IACS 20°C (68°F) | Electrical resistivity | Density | Coefficient of thermal expansion |
|---|---|---|---|---|---|---|
| 10%CCA | 10% Copper by volume | 82.7 MPa (12.0 ksi) | 62.854 | 2.74 Ω cm 10-6 (16.5 Ω cir-mil/ft) | 3.32g/cm3 (0.12 lb/in3) |
22.9 µm/m-°C (12.7 µin/in-°F) |
| 15%CCA | 15% Copper by volume | 117 MPa (17.0 ksi) | 64.416 | 2.67 Ω cm 10-6 (16.1 Ω cir-mil/ft) | 3.63g/cm3 (0.131 lb/in3) | 22.9 µm/m-°C (12.7 µin/in-°F) |