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Copper tungsten

Copper tungsten materials

Copper tungsten materials

Copper tungsten materials

Copper tungsten alloy product is a sintered copper-tungsten material manufactured by powder metallurgy. It forms dense composite offering hardness, wear resistance and a high softening temperature of tungsten combined with the good electrical conductivity of copper.

Copper tungsten may be used as an electrical contact material. In the most severe applications associated with power generation and transmission the switch may be totally immersed in oil. In these cases there is no advantage in using the tarnish resistant silver-based materials, as oxidation is prevented by the exclusion of air. Copper tungsten contacts are widely used in these cases, the selection of the grade used being dependent on the relative importance of conductivity and arc resistance.

Copper tungsten data sheet

Grade

Cu%(WT)

W%(WT)

RWMA
Class

Density
(Min)

Electric Conductivity
(Min)

Hardness (Min)

CuW55 45±2 Balance 10 12.30g/cm3 55%IACS 125HB
CuW60 40±2 Balance   12.75g/cm3 52%IACS 140HB
CuW65 35±2 Balance   13.30g/cm3 50%IACS 155HB
CuW70 30±2 Balance   13.80g/cm3 49%IACS 175HB
CuW75 25±2 Balance 11 14.50g/cm3 47%IACS 195HB
CuW80 20±2 Balance 12 15.15g/cm3 42%IACS 220HB
CuW85 15±2 Balance   15.90g/cm3 35%IACS 240HB

Copper WC data sheet

Grade Cu%(WT) WC%(WT) Density (Min)) Electric Conductivity (Min) Hardness (Min)
CuWC50 50±2 Balance 11.04g/cm3 48%IACS 80HRB
CuWC55 45±2 Balance 11.35g/cm3 45%IACS 85HRB
CuWC60 40±2 Balance 11.80g/cm3 38%IACS 90HRB
CuWC70 30±2 Balance 12.56g/cm3 33%IACS 98HRB
CuWC75 25±2 Balance 12.80g/cm3 31%IACS 28HRC
CuWC80 20±2 Balance 13.40g/cm3 28%IACS 34HRC
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