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W50Cu50 heatsinks

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Ingredient Name

CAS Number

% Weight

Tungsten 7440-33-7 50-90
Copper 7440-50-8 10-50

Composition
(Wt%)

W 90%
Cu 10%

W 88%
Cu 12%

W 85%
Cu 15%

W 80%
Cu 20%

Density
(g/cm3)
17.0 16.6 16.4 15.5
Coefficient of Thermal
Expansion(10-6/K)
5.6 5.7 5.8 7.0
Thermal Conductivity
(W/mK)
180 188 196 220
Specific Heat Capacity
(J/kgK)
155 165 175 190
Young’s Modulus
(Gpa)
325 315 305 278
Specific Electrical
Resistance(uΩm)
0.047 0.045 0.042 0.035
Vickers Hardness
(HV10)
300 295 275 255
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