Tungsten – Copper alloys
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These composites are a combination of tungsten or tungsten carbide and copper produced by powder metallurgy .
WCu alloys are very hard , highly resistant to wear , highly resistant to traction at high temperatures and provide good electrical and thermal conductivity . |
They are used in electrodes for spot welding , projection welding , MIG process weld points and electrodes for electro – erosion .
They are capable of carrying high current with good arc resistance , highly resistant to wear and provide good electrical and thermal conductivity . |
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| Material |
Composition (%) |
Hardness (HRB) |
Electrical Condutivity
(%IACS) |
UTS (PSI)
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Density (g/cm³) |
Thermal Conductivity w/cm°c ( 20°c) |
| 10CI |
W=90 Cu= Bal. |
103-109 |
26-35 |
- |
17,05 |
1,45 |
| 20CI |
W= 80 Cu= Bal. |
98-106 |
38-45 |
96000 |
15,50 |
1,50 |
| 30CI |
W= 70 Cu= Bal. |
92-96 |
44-52 |
85000 |
14,20 |
1,75 |
| 40CI |
W= 60 Cu=Bal. |
70-85 |
47-57 |
- |
13,00 |
1,95 |
| 50CI |
W= 50 Cu= Bal. |
65-75 |
51-65 |
- |
12,00 |
2,00 |
| 50WCI |
Wc= 50 Cu= Bal. |
91-97 |
44-50 |
70000 |
11,30 |
- |
Molybdenum – Copper alloys
Molybdenum – copper alloys produced by powder mettalurgy have low density and excellent thermal conductivity . They are used in vacuum switchgears , heat sinks and other electrical and engineering applications .
| Material |
Composition (%) |
Hardness
HB 2.5 / 62.5 |
Electrical Condutivity
(%IACS) |
UTS (PSI)
|
Density (g/cm³) |
Thermal Conductivity w/cm°c |
| 35MCI |
Mo= 65 Cu= Bal. |
125-145 |
45 |
minimum 40590 |
9,70 |
minimum 1,65 |
| 20MCI |
Mo= 80 Cu= Bal. |
135-155 |
35 |
minimum 43480 |
9,95 |
minimum 1,45 |
Other Conditions
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