Kanthal® copper-clad aluminium (CCA) wire is available with 10% or 15% copper cladding over an aluminium wire core. CCA offers the inherent characteristics of aluminium while the copper cladding provides greater conduction of current and the ease of soldering of copper. Kanthal® CCA wire is 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) |