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Copper Tungsten Bar

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Description:
The refractory metal composite material is a combination of tungsten and copper. The manufacturing process is as follows: press the refractory metal, sinter the pressed compact at a high temperature, and infiltrate it with copper. All this is done under very closely controlled conditions. The result is a relatively hard material with superior arc and wear resistance, high physical Properties: at elevated temperatures, and good electrical and thermal conductivity.

Main Grade and Properties:
  RWM Group B Nominal composition % Weight Rockwell Hardness Electrical Conductivity %ACS Ultimate Tensile Strength PSI Cross Breaking Strength PSI Density GMS/CC Thermal Exp in/in cx10(6) at 20°c Thermal Conductivity W/CM °c 20-400°c
CW55 - 45 copper
55 tungsten		 79B 55 63000 110000 12.6 11.8 2.4
CW68 - 32 copper
68 tungsten		 88B 52 75000 130000 13.93 10.9 2.1
CW70 Class 10 30 copper
70 tungsten		 90B 50 85000 140000 14.18 10.77 2.01
CW75 Class 11 25 copper
75 tungsten		 94B 48 90000 150000 14.7 10.22 1.89
CW78 Class 11&12 22 copper
78 tungsten		 96B 46 94000 160000 15.12 9.3 1.84
CW80 Class 12 20 copper
80 tungsten		 98B 44 96000 170000 15.58 9.2 1.82
CW85 - 15 copper
85 tungsten		 102B 36 75000 170000 16.19 7.97 1.75
CW90 - 10 copper
90 tungsten		 106B 28 70000 150000 17.05 6.49 1.47
CW75 - 25 copper
75 tungsten		 109B 28 16000 200000 14.6 - -