Features

CuW has excellent arc erosion resistance, fusion welding resistance and pressure resistance. The content of tunsgten ranges from 50% to 90% according to its operation conditions. It combines the good thermal and electrical conductivities of copper and the high hardness and abrasion resistance of tungsten.

Property and Application

Material	Composition (wt%)			Density (g/cm3)	Resistivity (μΩ·cm)	Hardness(HB)	Metallography
	Cu	w	impurity
CuW(50)	50.0±2.0	balance	≤0.5	≥11.85	≤3.2	≥115
CuW(55)	45.0±2.0			≥12.30	≤3.5	≥125
CuW(60)	40.0±2.0			≥12.75	≤3.7	≥140
CuW(65)	35.0±2.0			≥13.30	≤3.9	≥155
CuW(70)	30.0±2.0			≥13.80	≤4.1	≥175
CuW(75)	25.0±2.0			≥14.50	≤4.5	≥195
CuW(80)	20.0±2.0			≥15.15	≤5.0	≥220
CuW(85)	15.0±2.0			≥15.90	≤5.7	≥240
CuW(90)	10.0±2.0			≥16.76	≤6.5	≥260

CuW is mainly used in auxiliary contact and arc striking contact for low or medium voltage.