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→5.3 Triple-Layer Carrier Materials
Depending on the intended application the following layer systems are utilized:
* Conduflex N <br/> CuSn6 - Cu - CuSn6 <br/>
The high electrical and thermal conductivity as well as the current carrying capacity of copper is combined with the spring properties of the tin bronze. Conduflex N strips are used in a thickness range of 0.1 – 1,5 mm in a maximum width of 140 mm.
* Cu - FeNi36 (Invar) - Cu
The high electrical conductivity and ductility of copperis combined with the low coefficient of thermal conductivity of the Invar alloy. The dimensionsional range is 0.2 – 1.8 mm in thickness with a maximum width of 140 mm.
* Cu – Fe or Steel – Cu
The high electrical conductivity and good arc mobility properties of copper are combined with the mechanical strength and magnetic properties of iron or steel. The thickness and width range of material strips are the same of the ones for Cu – Invar – Cu system.
The thickness ratios of the components can be selected according to the application requirements. The two outer layers usually have the same thickness.
