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| Tungsten -Copper alloys |
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| Property and Application: |
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| As the composite of the Tungsten and Copper,these alloys are characterized by high thermal conductivity, low thermal expansion and high wear resistance combined with excellent electrical conductivity. These alloys are easy to be machined into various components. These alloys are mainly used in electrical industry and sink evaporation industry. |
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| Tungsten-Copper for electrical industry |
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| Property |
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| Type |
Density |
HB |
Electrical |
Form |
| (g/c3) |
(MPa) |
Conductivity |
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(% IACS) |
| WCu10 |
16.8-17.2 |
2550 |
> 27 |
Rods |
| WCu20 |
15.2-15.6 |
2160 |
> 34 |
Plates |
| WCu25 |
14.5-15.0 |
1940 |
> 38 |
Sheets |
| WCu30 |
13.8-14.4 |
1720 |
> 42 |
Bars |
| WCu50 |
11.9-12.3 |
1130-1180 |
> 55 |
Parts |
| Application |
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| Resistance welding and ECM(spark erosion) and EDM(Electrical Discharge Machining) electrode,casting dies,rocket parts,heat sinks and spreaders,high voltage arc contactor and switch gear,vacuum contactors. |
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| Tungsten-Copper for sink evaporation industry |
| Property |
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| Grade |
WCu10 |
WCu15 |
WCu20 |
WCu25 |
Wcu30 |
| Density g/cm3 |
17 |
16.3 |
15.4 |
14.9 |
14.2 |
| CTE, ppm/K |
6.5 |
7 |
8.3 |
9 |
9 |
| Thermal conductivity |
1700-1800 |
190-200 |
200-220 |
220-250 |
247 |
| W/m.K |
| Application |
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Better sink substrate made of silicon carbide, aluminum oxide,esp. for the heavy packed circuits.Because the Tungsten-copper alloy characters the good thermal conductivity of Copper and low expansion of Tungsten.
Othe electrode material is also available:
AgW75,CU-C(Rare earth Cu alloy),CuCrZr,CuAl2O3
Te-Cu(C14500,ASTM B301/B301M),
Be-Cu(C17200,C17300,C17500,C17510,C17520 etc.) | |
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