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Refractory Metals - Composites -Special Alloys -
Ceramics -Tungsten - Titanium
TUNGSTEN COPPER -
COPPER ALLOYS
Marketech International, Inc.
offers a wide variety of Tungsten products including Tungsten
Copper and Copper Alloys
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Description of Tungsten-Copper Alloys |
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As high performance materials, Tungsten-Copper
and Molybdenum-Copper are characterized by high thermal
conductivity, low thermal expansion and high wear resistance
combined with excellent electrical conductivity. These
composites are made by infiltrating porous tungsten or
molybdenum with molten copper in a vacuum. Thus providing a
direct copper path for heat or electrical conductivity. |
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Tungsten-Copper for Electrical Application |
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Alloys and Properties |
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High
Voltage Arc Contacts, Vacuum Contacts, Electrodes for Resistant
Welding and Spark Erosion, Leaders for Steel Rolling, Dies for
Casting, Balance Weights, Rocket Parts. |
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Type |
Density
(g/c3) |
HB
(MPa) |
Electrical
Conductivity
(% IACS) |
Form |
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WCu10 |
16.8-17.2 |
> 2550 |
> 27 |
Rods, Bars
Sheets,Plates,
Parts |
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WCu20 |
15.2-15.6 |
> 2160 |
> 34 |
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WCu25 |
14.5-15.0 |
> 1940 |
> 38 |
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WCu30 |
13.8-14.4 |
> 1720 |
> 42 |
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Heat Sink Applications |
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Heat Sinks and Spreaders, Microwave
Carriers, Hermetic Package Bases and Housings,
Ceramic
Substrate Carriers, GaAs and Silicon Device Mounts,
Laser Diode Mounts. |
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Tungsten-Copper for Heat Sinks |
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Alloys and Properties |
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Properties |
WCu10 |
WCu15 |
WCu20 |
WCu25 |
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Density g/cm3 |
17.0 |
16.3 |
15.4 |
14.9 |
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CTE, ppm/K |
6.5 |
7.0 |
8.3 |
9.0 |
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Thermal conductivity
W/m.K |
1700-1800 |
190-200 |
200-220 |
220-250 |
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Typical Size |
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Ground Finish Bars |
Ground Finish Sheets |
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Diameter (mm) |
Max. Length (mm) |
Thickness (mm) |
Max. Width x
Max. Length (mm) |
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4 - 8 |
175 |
1.2 |
20 x 80 |
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10 - 50 |
203 |
3.3 |
30 x 150 |
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> 60 |
350 |
5 |
50 x 150 |
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10 |
100 x 200 |
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20 |
200 x 300 |
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30 - 100 |
300 x 400 |
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