Graphite Felt & Carbon Felt

Graphite Felt & Carbon Felt

Carbon felt and graphite felt for high temperature furnace insulation


Carbon felt and graphite felt are designed for use as high-temperature insulation in vacuum furnaces and inert gas furnaces. Our PAN-based carbon and graphite felt is light in weight and has low thermal conductivity. It can be used in oxidizing temperatures up to 400 °C and in vacuum or protective atmospheres up to 3200 °C.

The carbon and graphite felts are processed from a polyacrylonitrile precursor and fired to graphitizing temperatures. Primarily used as high-temperature insulation in inert or vacuum atmospheres offering high stability through rapid thermal cycling.

Distinctive Characteristics:

  • High stability with low shrinkage
  • Low density and thermal mass
  • Greater efficiency in heating and cooling
  • Low thermal conductivity
  • Uniformity throughout the material
  • Available in different lengths, widths, and thickness
  • Can be halogen purified to reduce impurity levels into the ppm range


Technical Data Unit Carbon Felt Graphite Felt
Process Temperature 950-1400 2200
Carbon Content % ≥96 ≥99.9
Heat Conductivity W/m·k 0.07-0.14 0.12-0.17
Density g/cm3 0.13-0.18 0.10-0.14
Tensile Strength Mpa 0.15-0.25 0.14-0.25