Graphite Rigid Board
Graphite rigid board is a low density bonded carbon fiber material that is designed to operate in a vacuum or inert atmosphere with standing temperatures up to 5000°F or 2750°C. We can offer many different sizes and thicknesses up to 10” thick and 50” wide and 60” long, based on your specific needs. Rigid board can be easily shaped by machining, sawing and drilling and can even be machined into cylindrical forms to meet specific complex configurations.
Graphite Insulating Systems offers a variety of foils and coatings that can be applied to the board to prevent infiltration and arid oxidation maximizing the insulation performance and longevity.
We stock board in full billet size of 39.4” x 59” x 10.5”, then cut the board to meet customer requirements.
Each billet is numbered for tracking through the entire process, from supplier through GIS process.
Density is measured and recorded on 100% of the material.
Distinguishing Characteristics
- Low thermal conductivity & expansion
- Good thermal insulating qualities
- Low out-gassing in temperatures > 1400°C
- Low vapor pressure at high temperatures
- Low ash and sulfur content
- Low moisture absorption
- Light weight and easily installed
- Low heat retention
- Excellent temperature uniformity
- Resistant to metal vapor impregnation
- Excellent chemical resistance
- Rapid heating and cooling due to low mass
- Unsurpassed thermal shock resistance
- Designed specifically for inert or vacuum atmospheres
Graphite Rigid Insulation Board Properties
- 100% Rayon Precursor
- Fired to 2000 Deg. C
- Bulk Density: .17 g/cc
- Flexural Strength: 145 psi
- Compressive Strength: 29 psi
Thermal Conductivity
- BTU-in/hr-ft2-° F
- 1,000 deg C 1.7
- 1,500 deg C 2.3
- 2,000 deg C 3.1
Ash Content: 300~800ppm
