Dingmans Ferry, PA 518.701.6722 sales@graphiteinsulation.com


Carbon Insulation Boards


Carbon Insulation boards are made of rigidized Pan felt and are used as insulation for vacuum or protective atmosphere process furnaces. The boards are easily cut or machined to custom sizes and can be used in both square and round hot zones.

Optional foil-lined boards increase radiant heat retention and minimize issues with furnace contaminant containment.

Shipping Information

Boards must be shipped freight to ensure safe delivery. Please contact us directly for a custom shipping quote or place your order and a representative will contact you to confirm shipping cost before processing your order.

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Carbon Insulation Boards

Pre-fire / Heat-treated Temp: 2192℉ | 1200℃

Grade: Carbon Board, Rigidized Pan Felt

What are Carbon Insulation Boards?
Carbon Insulation Boards, manufactured from rigidized pan felt, are used as refractory insulation for vacuum or protective atmosphere process furnaces. Material is pre-fired to 2192°F (1200°C) to promote higher purity, reduced ash content, and consistent performance. Ash purification services to ≤ 10ppm available. The rigid insulation boards can be easily cut or machined to custom sizes and used in both square and round hot zones. Boards manufactured from pan have better oxidation resistance and lower surface area due to its larger courser fibers in comparison to graphite insulation boards manufactured from rayon.
Surface & layering Options
Materials such as Graphite Foil, Carbon Fiber Composite (CFC), and GraphiSeal can be used to enhance the perforamnce of our carbon boards. Foil and CFC can be used on exterior surface(s) or layered internally.

  • Graphite foil
    • Dust generation prevention
    • Surface protection
    • Low gas-permeability
    • Increase radiant heat retention while reducing issues with furnace contaminant containment
    • Decreases pump downtimes and increases longevity of the insulation
  • Carbon Fiber Composite (CFC)
    • Dust generation prevention
    • High strength and surface protection
    • Promotes excellent durability, impact, & wear resistance
  • GraphiSeal Coating
    • Reduce porosity and dusting
    • Improve oxidation resistance
    • Surface(s) and/or edge(s) can be sealed with specified number of coats
    • Material can be mixed with Silicon Carbide powder to produce an anti-eutectic coating
Benefits of Carbon Insulation Boards
  • Boards able to be fabricated into complex shapes & machined to print
  • Graphite Foil option available on surface(s) or layered
  • CFC option available on surface(s) or layered
  • GraphiSeal Coating option available on surface(s) and/or edge(s)
  • Greater oxidation resistance & lower surface area due to larger courser fibers in comparison to rayon
Applications of Carbon Insulation Boards
  • Vacuum Furnaces
  • Powdered Metal Sintering
  • Annealing & Hot Pressing
  • Silicon / GaAs Crystal Growing Furnaces
  • Sputtering Targets
  • Fiber Optics Production
  • CVD, CVI, and CVR Furnaces
  • Graphite Purification Furnaces
  • Carbon Fiber Heat Treating Furnaces
PropertiesUnitsCarbon Insulation Boards (Pan)
Carbon Content%≥ 95
Specific Resistanceohm.cm0.18 - 0.22
Ash Contentppm≤ 500
Ash Content Purifiedppm≤ 10
Temperature Rating1℉| ℃5432 | 3000
Pre-fire temp℉| ℃2192 | 1200
Standard Size Boardinches40" x 60"
Max Size Boardinches60" x 60"
Max Thicknessinches≤ 20"
Alternate Sizing & PuritiesStandard | MetricContact us
Notes:1Temp rating in vacuum or inert atmosphere

Pricing Overview

BoardsProcess Temp.
(℉ | ℃)
(g/cm³ | lb/ft³)
Weight per Board
Foil Coating
Carbon Boards219212001" x 40" x 60"0.2515.6122$1100.00$1300.00
(2 Sides)
219212001.5" 40" x 60"0.2515.6132$1,300.00$1,500.00
(2 Sides)
219212002" x 40" x 60"0.2515.6143$2,200.00$2,400.00
(2 Sides)
219212004" x 40" x 60"0.2515.6186$2,600.00$2,750.00
(2 Sides)
Graphite Boards363212001" x 24" x 52"0.2414.9811$565.00$615.00
363220001" x 40" x 60"0.2414.9821$1,100.00$1,200.00
363220001.5" x 24" x 52"0.2414.9816$850.00$900.00
363220001.5" 40" x 60"0.2414.9831$1,650.00$1,750.00
363220002" x 24" x 52"0.2414.9822$1,125.00$1,175.00
363220002" x 40" x 60"0.2414.9841$2,160.00$2,260.00
363220004" x 24" x 52"0.2414.9843$2,630.00$2,680.00
363220004" x 40" x 60"0.2414.9883$4,350.00$4,450.00
Carbon Boards
You’ re viewing: Carbon Insulation Boards $1,100.00$2,750.00
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