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Carbon-Graphite and graphite materials are porous after they are processed. Hence it is common to impregnate these materials with resin or metals to: increase their strength, increase the thermal conductivity, reduce the resistivity, reduce the porosity.
Different types of metals are impregnated for different effects, e.g: antimony is added to improve the friction and wear resistance characteristics of the carbon-graphite compound.
The difference between resin impregnation and metal impregnation one is, with metal-impregnation, the material is able to handle higher temperature and higher-pressure applications.
| Properties | Unit of Measurement | Values |
| Bulk Density | g/cm3 | 2.3 |
| porosity | % | <1.5 |
| Flexure strength | MPa | 80 |
| Compressive strength | MPa | 250 |
| Young’s modulus | GPa | 24 |
| Coefficient of thermal expansion | 10-6/ok | 4.2 |
| Thermal conductivity | W/mk | 13 |
| Temp limit (oxidizing atmos.) | °C/°F | 350/660 |
| Temp limit (inert atmos) | °C/°F | 600/1110 |
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