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Pyrolytic Graphite is a unique form of graphite manufactured by decomposition of a hydrocarbon gas at very high temperature in a vacuum furnace.
It is nucleated on substrate and grown with texture along C axis.
The result is an ultra-pure product which is near theoretical density and extremely anisotropic.
The material is grown onto a substrate giving it a layered composition.
This also means it has different properties in different planes.
In the C plane (across its layers) it has low thermal conductivity, acting as an insulator.
In the A-B plane (with the layers) it has very high thermal conductivity, acting as a superb conductor.
All values are taken at room temperature, unless noted otherwise.
■ Typical Properties
| PROPERTY |
US VALUE |
METRIC VALUE |
|---|
| Density |
0.079 |
lb/in 3 |
2.2 |
gr/cm 3 |
| Flexural Strength - AB |
13000 |
psi |
89.6 |
mpa |
| Compressive Strength - AB |
15000 |
psi |
103.4 |
mpa |
| Compressive Strength - C |
25000 |
psi |
172.4 |
mpa |
| Shear Strength - AB |
1000 |
psi |
6.9 |
mpa |
| CTE - AB |
0.8 |
in/in °F x 10 -6 |
0.5 |
Microns/m °C |
| CTE - C |
11 |
in/in °F x 10 -6 |
6.5 |
Microns/m °C |
| Thermal Conductivity - AB |
232 |
BTU/(h.ft 2 °F/ft) |
400 |
W/(m 2 . K/m) |
| Thermal Conductivity - C |
2 |
BTU/(h.ft 2 °F/ft) |
3.5 |
W/(m 2 . K/m) |
| Resistivity (RT) - AB |
0.2 * 10-3 |
ohm/inch |
0.5 * 10-3 |
ohm/cm |
| Resistivity (1650C) - AB |
0.1 * 10-3 |
ohm/inch |
0.3 * 10-3 |
ohm/cm |
| Resistivity (RT) - C |
0.2 |
ohm/inch |
0.5 |
ohm/cm |
| Resistivity (1650C) - C |
0.1 |
ohm/inch |
0.3 |
ohm/cm |
| Oxidizing Atmosphere |
1200 |
°F |
649 |
°C |
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Working days : Monday to Saturday
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