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Substrate Properties Chart
WAM offers a wide range of alloys meeting various Coefficients of Thermal Expansion specifications.
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Material |
Chemical Symbol |
Coefficient of Thermal Expansion (ppm/K) |
Thermal Conductivity (W/m*K) |
Density (g/cc) |
Melting Temperature (°C) |
Alloy 42 |
NiFe |
4.8 |
10.9 |
8.12 |
1426 |
Alumina |
Al2O3 |
6.4 |
30 |
3.91 |
2030 |
Aluminum |
Al |
23.4 |
237 |
2.69 |
660 |
Aluminum Nitride |
AlN |
4.5 |
184 |
3.21 |
2300 |
Beryillia |
BeO |
6.7 |
281 |
2.91 |
2530 |
Beryllium |
Be |
11.2 |
200 |
1.86 |
1287 |
Copper |
Cu |
16.8 |
401 |
8.95 |
1083 |
Copper/Invar/Copper |
20/60/20 |
5.2 |
18 |
8.4 |
N/A |
Copper/Moly/Copper |
13/74/13 |
5.8 |
185 |
8.89 |
N/A |
Gallium Arsenide |
GaAs |
6.5 |
47 |
5.26 |
1238 |
Gold |
Au |
14.2 |
317 |
19.34 |
1063 |
Kovar |
NiFeCo |
4.9 |
17 |
8.37 |
1450 |
Molybdenum |
Mo |
4.9 |
138 |
10.22 |
2623 |
Nickel |
Ni |
13.3 |
91 |
8.92 |
1453 |
Nickel/Moly/Nickel |
5/90/5 |
5.58 |
132 |
10.09 |
N/A |
Silicon |
Si |
4.2 |
148 |
2.33 |
1410 |
Silicon Carbide |
SiC |
3.7 |
277 |
3.21 |
2700 |
Silver |
Ag |
19.6 |
429 |
10.5 |
962 |
Tungsten |
W |
4.5 |
174 |
19.31 |
3380 |
Tungsten Copper |
75W25Cu |
8.3 |
234 |
14.91 |
N/A |
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