### Determine the allowed range of the diameter of copper core

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##### Reference no: EM131112089

A copper-silver bimetallic wire, 1 cm in diameter, is prepared by co-extrusion with copper as the core and silver as the outer layer. The desired properties along the axis parallel to the length of the bimetallic wire are as follows:

(a) Thermal conductivity /410 W/(m-K);

(b) Electrical conductivity / 60 × 106Ω-1m-1; and

(c) Weight < 750 g/m. Determine the allowed range of the diameter of the copper core.

 Copper Silver Density (g/cm3) 8.96 10.49 Electrical conductivity 59 × 106 63 × 106 (Ω-1m-1) Thermal conductivity 401 429 [W/(m-K)]

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