Higher electrical conductivity is required to ensure effective operation when used for frequent switching with high current strength, where mixed oxides of silver-tungsten can form, resulting in higher contact resistance.
Tungsten Silver data sheet
|
Grade |
Ag%(WT) |
W%(WT) |
Density (Min) |
Electric Conductivity (Min) |
Hardness (Min) |
|
AgW55 |
45±2 |
Balance |
13.55g/cm3 |
58%IACS |
115HB |
|
AgW60 |
40±2 |
Balance |
14.00g/cm3 |
56%IACS |
125HB |
|
AgW65 |
35±2 |
Balance |
14.50g/cm3 |
53%IACS |
135HB |
|
AgW70 |
30±2 |
Balance |
14.90g/cm3 |
51%IACS |
150HB |
|
AgW75 |
25±2 |
Balance |
15.40g/cm3 |
48%IACS |
165HB |
|
AgW80 |
20±2 |
Balance |
16.10g/cm3 |
45%IACS |
180HB |
Tungsten Silver Carbide
Silver Tungsten Carbide alloys have higher hardness but lower electrical conductivity compared to Silver Tungsten alloys. They are suitable for applications requiring greater mechanical wear resistance. They are used in DC switching devices, miniature circuit breakers, and heavy-duty relays.
Silver Tungsten-carbide data sheet
|
Grade |
Ag%(WT) |
WC%(WT) |
Density (Min) |
Electric Conductivity (Min) |
Hardness (Min) |
|
AgWC50 |
50±2 |
Balance |
12.20g/cm3 |
29%IACS |
85HRB |
|
AgWC40 |
60±2 |
Balance |
11.70g/cm3 |
34%IACS |
72HRB |
|
AgWC30 |
70±2 |
Balance |
11.20g/cm3 |
36%IACS |
57HRB |