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Tungsten Copper

We employ powder metallurgy to manufacture high-voltage tungsten-copper contacts:
  • out of the mixture of W and Cu (high copper content)
  • by the infiltration of a tungsten matrix with copper (low copper content)

The starting powders have a high purity (W ≥ 99.9%), fine electrolytic Cu powderes. Because of its properties (Table 2) W-Cu is used for:
  • electrical contact materials
  • welding and erosion electrodes

Table 2: W-Cu properties
COMPOSITION γ
g/cm3
HARDNESS
HV
El - conductivity
mΩ/mm2
W-Cu 80/20 min 15,2 ≥ 210 16-20
W-Cu 75/25 min 14,6 ≥ 180 17-21
W-Cu 70/30 min 13,9 ≥ 160 18-22


Alloy composition and product form are produced according to customer demand.
W-Cu products can also be cast in brass, aluminium, etc.