Refractory Metals
Tungsten Copper Vacuum Contacts
Tungsten copper is a good choice for a vacuum contact due to its low cost, resistance to arc erosion, good conductivity, and resistance to mechanical wear and contact welding. CuW is usually a contact for vacuum, oil, and gas systems.
HEXON supplies tungsten copper composites from 50W-50Cu to 90W-10Cu, by using isostatic pressing, high-temperature sintering and copper infiltration process. We can produce semi-finished forms like plate, sheet, rod, bar, tube, as well as complicated custom-shaped forms by die molding, extrusion or injection molding, in large or very small sizes.
Datasheet for tungsten copper used as electrical contacts
|
Composition |
Density (g/cm3, ≥) |
Resistivity, (µΩ·cm, ≤) |
IACS (%, ≥) |
Hardness HB (Kgf/mm2, ≥) |
UTS (MPa, ≥) |
Bending strength (MPa, ≥) |
|
50WCu |
11.85 |
3.2 |
54 |
115 |
-- |
-- |
|
55WCu |
12.30 |
3.5 |
49 |
125 |
434 |
-- |
|
60WCu |
12.75 |
3.7 |
47 |
140 |
485 |
-- |
|
65WCu |
13.30 |
3.9 |
44 |
155 |
537 |
-- |
|
70WCu |
13.80 |
4.1 |
42 |
175 |
586 |
790 |
|
75WCu |
14.50 |
4.5 |
38 |
195 |
620 |
885 |
|
80WCu |
15.15 |
5.0 |
34 |
220 |
662 |
980 |
|
85WCu |
15.90 |
5.7 |
30 |
240 |
517 |
1080 |
|
90WCu |
16.75 |
6.5 |
27 |
260 |
483 |
1160 |
