Molybdenum Copper alloy
MoCu alloys are made by sintering molybdenum and copper together. This results in a heat sink of lower density, low CTE and excellent thermal conductivity.
Grade
Material
Wt%
g/cm3
Thermal conductivity at 25℃
Coefficient of thermal
Mo85Cu15
Mo
Cu
Density at 20℃
160 - 180
expansion at 20℃
Mo80Cu20
85± 1
Balance
10
170 - 190
6.8
Mo70Cu30
80 ± 1
9.9
180 - 200
7.7
Mo60Cu40
70 ± 1
9.8
210 - 250
9.1
Mo50Cu50
60 ± 1
9.66
230 - 270
10.3
Typical Properties
MoCu
65/35
80/20
85/15
Molybdenum
%
65±3
80±2
85±2
Copper
35±3
20±2
15±2
Density
9.73±0.2
9.9±0.2
10.0±3
Hardness
HB2.5/62.5
120-150
130-160
CTE20-100°c
10-6/K
8.6
6.3
6.2
CTE20-300°c
9.2
6.4
CTE20-450°c
9.6
6.6
6.5
Elastic Modulus
KN/mm²
210-250
220-260
Ultimate Tensile Strength
N/mm²
>250
>300
>320
Yield Strength
>270
>280
Electrical Conductivity
%IACS
45
35
32
Electrical Resistiance
Ωmm²/m
0.038
0.042
Thermal Conductivity
W/mK
≥170
≥150
≥145
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