Carbon/carbon heaters are mainly used in the thermal systems of monocrystalline silicon furnaces and polycrystalline silicon ingot casting furnaces.
Density, ≥1.70 g/cm³;
Flexural strength, ≥130 MPa;
Compressive strength, ≥100 MPa;
Thermal conductivity at room temperature, ≥40 W/(m·K).