Chinatungsten’s Tungsten-Copper/Molybdenum copper Heat Sinks
Chinatungsten’s Tungsten-Copper/Molybdenum copper Heat Sinks
Chinatungsten Online offers a wide variety of Tungsten products including Tungsten Copper and Copper Alloys
Chinatungsten’s Tungsten-Copper Alloys
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.
Tungsten-Copper for Electrical Application
Properties
High Voltage Arc Contacts, Vacuum Contacts, Electrodes for Resistant Welding and Spark Erosion, Leaders for Steel Rolling, Dies for Casting, Balance Weights, Rocket Parts.
|
Type |
Density(g/c3) |
HB(MPa) |
Electrical Conductivity(% IACS) |
Form |
|
WCu10 |
16.8-17.2 |
> 2550 |
> 27 |
Rods, Bars
Sheets, Plates,
Parts |
|
WCu20 |
15.2-15.6 |
> 2160 |
> 34 |
|
WCu25 |
14.5-15.0 |
> 1940 |
> 38 |
|
WCu30 |
13.8-14.4 |
> 1720 |
> 42 |
Laminated Sheets - Copper/Moly/Copper
Tungsten/Copper –Moly/Copper –Cu/Mo/Cu Heat Sink Materials
Values are approximate and may vary.
Type Materials Densityg/cm3 Thermal Conductivity W/m•K CTE,ppm/ºK20-100ºC
Composite
W90Cu 16.6-17.0 180~190 5.6~6.3
W85Cu 16.2-16.6 190~200 6.3~7.0
W80Cu 15.4-15.8 200~220 7.8~8.5
W75Cu 14.8-15.2 220~240 9.5~10.2
Mo70Cu 9.6-9.8 190~200 7.8~8.4
Mo60Cu 9.5-9.7 200~220 9.0~9.6
Mo50Cu 9.3-9.5 220~250 10.1~10.7
Copper Metal Laminate
1:1:1
Cu/Mo/Cu 9.27-9.47 300-310(x-y) 220-230(z) 9.6-10.0
1:2:1
Cu/Mo/Cu 9.48-9.68 270-280(x-y) 200-210(z) 8.5-8.9
1:3:1
Cu/Mo/Cu 9.6-9.8 240-250(x-y) 180-190(z) 7.7-8.1
1:4:1
Cu/Mo/Cu 9.7-9.9 210-220(x-y) 170-180(z) 6.8-7.2
1:5:1
Cu/Mo/Cu 9.74-9.94 195-200(x-y) 165-170(z) 6.2-6.6
13:74:13
Cu/Mo/Cu 9.78-9.98 190-200(x-y) 160-170(z) 5.7-6.1
1:4:1
Cu/Mo70/Cu 9.46 210-220(x-y) 170-180(z) 7.2
Cu/MoCu sheets have very high in plane conductivity provide by layers
of copper and low thermal expansion provided by the inner layer of molybdenum. These laminated sheets have the ability to spread the heat from a concentrated heat source and then dissipate the heat through the layers. They Also:
|
● Offer an economical solution to many applications |
|
● Will not delaminate and can resist repeated 850° C cycles |
|
● Available in several standard ratios and many thicknesses for tailored TE machining |
|
● Are lower weight than WCu composite materials |
|
● Are available in larger and thinner sheet size |
|
● Utilize copper that is easily plated |
|
● Can be machined by EDM |
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