Copper Tungsten Alloys
Refractory Metal Composites
Typical Properties
Eagle refractory metal composite materials are a combination of tungsten or tungsten carbide combined with copper or silver. The manufacturing process is to press the refractory (tungsten or tungsten carbide), sinter the pressed compact at a high temperature, and infiltrate with copper or silver. All this is done under very closely controlled conditions. The result is a relatively hard materials with superior arc and wear resistance, high physical properties at elevated temperatures, and good electrical and thermal conductivity.
| Eagle |
RWMA Group B |
Nominal composition % Weight |
Rockwell Hardness |
Electrical Conductvity % ACS |
Ultimate Tensile Strength PSI |
Cross Breaking Strength PSI |
Density |
Thermal Exp in/in cx10(6) at 20° |
Thermal Conductivity W/CM °C 20-400°C |
Specific Heat /kg °C at 20° |
Electro resistance at 20° |
| CW55 | --- | 45 copper 55 tungsten |
79B | 55 | 63000 | 110000 | 12.60 | 11.80 | 2.40 | 251 | 3.16 |
| CW68 | --- | 32 copper 68 tungsten |
88B | 52 | 75000 | 130000 | 13.93 | 10.90 | 2.10 | 219 | 3.33 |
| CW70 | class10 | 30 copper 70 tungsten |
90B | 50 | 85000 | 140000 | 14.18 | 10.77 | 2.01 | 214 | 3.41 |
| CW75 | class11 | 25 Copper 75 Tungsten |
94B | 48 | 90000 | 150000 | 14.70 | 10.22 | 1.89 | 201 | 3.51 |
| CW78 | class 11&12 |
22 Copper 78 Tungsten |
96B | 46 | 94000 | 160000 | 15.12 | 9.30 | 1.84 | 194 | 3.71 |
| CW80 | Class 12 | 20 Copper 80 Tungsten |
98B | 44 | 96000 | 170000 | 15.58 | 9.20 | 1.82 | 188 | 3.9 |
| CW85 | -- | 15 copper 85 tungsten |
102B | 36 | 75000 | 170000 | 16.19 | 7.97 | 1.75 | 175 | 4.71 |
| CW90 | -- | 10 copper 90 Tungsten |
106B | 28 | 70000 | 150000 | 17.05 | 6.49 | 1.47 | 163 | 6.1 |
| CW75 | -- | 25 Copper Alloy 75 Tungsten |
109B | 28 | 16000 | 200000 | 14.60 | -- | -- | -- | 6.1 |
| TC50 | -- | 50 copper 50 Tungsten- Carbide |
94B | 47 | 70000 | 140000 | 11.27 | 12.2 | -- | -- | 3.6 |
| TC56 | -- | 44 copper 56 Tungsten- carbide |
99B | 42 | 75000 | 160000 | 11.67 | 11.5 | -- | -- | 4.1 |
| TC70 | -- | 30 copper 70 tungsten- carbide |
37C | 30 | 85000 | 180000 | 12.60 | 9.8 | -- | -- | 5.7 |
| TCa70 | -- | 30 copper alloy 70 tungsten- carbide |
47C | 18 | 150000 | 220000 | 12.60 | -- | -- | -- | 9.5 |
| Molybdenum | class 14 |
100 molybdenum |
92-98B | 33 | 100000 | --- | 10.15 | 5.40 | 1.15 | 260 | 5.2 |
| Tungsten | class 13 |
100 tungsten |
35-50C | 30 | 100000 | --- | 19.10 | 4.40 | 1.25 | 140 | 6.5 |
| Diemetal | -- | 92.5 tungsten blance Ni, Fe, Mo |