Carbon Felt & Graphite Felt

Carbon felt and graphite felt is an ideal material for high temperature insulation in vacuum furnaces and inert gas furnaces. The needle-punched PAN based carbon and graphite felt is light in weight and has low thermal conductivity.

Carbon and graphite felt can be used in oxidizing temperatures up to 400 °C and in vacuum or protective atmospheres up to 3200 °C. Rayon Based and PAN Based felt are available.

Typical Properties of HPMS PAN Based Carbon Felt & Graphite Felt
Property Carbon Felt Graphite Felt
Bulk density (g/cm³) 0.14 0.13
Carbon content (%) 98.5 > 99.5
Ash content (%) 0.75 0.05
Thermal conductivity (W/mK) (at 1150 °C) 0.12 0.16
Tensile strength (MPa) 0.18 0.12
Min. Process Temperature (°C) 1500 2400
Thickness (mm) 3, 5, 8, 10, 12 5, 8, 10, 12
Width (mm) 1000 - 1300 1000 - 1300
Length 9 - 12 9 - 12
Typical Properties of HPMS Rayon Based Carbon Felt & Graphite Felt
Property Carbon Felt Graphite Felt
Bulk density (g/cm³) 0.12 0.09
Carbon content (%) ≥ 99 ≥ 99.5
Ash content (%) ≤ 0.05 ≤ 0.01
Thermal conductivity (W/mK) (at 1150 °C) 0.11 0.14
Tensile strength (MPa) 0.13 0.10
Min. Process Temperature (°C) 1400 2200 - 2500
Thickness (mm) 3, 5, 8, 10, 12 5, 8, 10, 12
Width (mm) 1000 - 1300 1000 - 1300
Length 9 - 12 9 - 12