Copper-clad aluminium (CCA)

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.

Copper-clad aluminium
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 Ohms cm 10-6 (16.5 Ohms cir-mil/ft) 3.32g/cm
(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 Ohms cm 10-6 (16.1 Ohms cir-mil/ft) 3.63g/cm3 (0.131 lb/in3) 22.9 µm/m-°C (12.7 µin/in-°F)