Electrical Contact Materials
Electrical Contact Materials
|
classify |
Chemistry element content wt% |
Gas content（not greater than）ppm |
Density g/cm3 |
Rigidity HB MPa |
Conductance MS/m |
|
Cu |
W |
C |
O2 |
N2 |
H2 |
（not less than） |
|
W-Cu10 |
10±2 |
other |
— |
50 |
8 |
— |
16.3 |
2250 |
20 |
|
Cu-W-WC |
30±2 |
other |
1～2 |
60 |
— |
— |
13.5 |
1960 |
20 |
|
Cu-WC |
40±3 |
other |
— |
60 |
25 |
— |
11.8 |
2156 |
20 |
|
Cu-Mo |
Cu25 |
Mo75 |
— |
60 |
10 |
— |
9.4 |
1300 |
21 |
|
Ag-WC |
Ag40 |
WC60 |
— |
70 |
30 |
5 |
12.5 |
1666 |
22 |
They mainly apply to vacuum interrupter of vacuum load breaker switches, vacuum contactor, among them the product of WCu10 occupy national market quota 70%. The tungsten-copper produced by powder metallurgy method have high density, high heat conduction, high tensile strength, high rigidity, low resistance, low coefficient of expansion, fine electric arc resistance, fine fusion welding resistance, and good galvanic corrosion resistance. They are widely used as electrical contact materials and electrode materials.
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