Graphite Insulation Shapes

Graphite Insulation Shapes are manufactured and fabricated from our rayon graphite boards. This insulation material is specifically designed for high-temperature vacuum and inert gas furnaces, among other applications. Material is pre-fired / heat-treated to 3992℉ (2200℃) to promote consistent insulation performance, higher purity, and reduced ash content. The material can be purified to ≤ 20ppm if needed and our engineering team will work with you to fabricate exactly what is needed for your application.

Materials such as Graphite Foil, Carbon Fiber Composite (CFC), and GraphiSeal can be used to enhance the perforamnce of our graphite boards and shapes. 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

Properties	Units	Graphite Insulation Boards (Rayon)
Density	g/cm3	0.17
Carbon Content	%	≥ 98-99.9
Thermal Conductivity 3632℉| 2000℃ 4532℉| 2500℃	W/mk W/mk	0.48 0.61
Specific Resistance	ohm.cm	0.18 - 0.22
Bending Strength	MPa	1.10
Compressive Strength	MPa	1
Ash Content	ppm	1000
Ash Content Purified	ppm	≤ 20
Moisture Absorption	%	≤ 1.0
Volatiles	%	Nil
Temperature Rating1	℉| ℃	5432 | 3000
Pre-fire temp	℉| ℃	3992 | 2200
Standard Size Board	inches	40 x 60
Max Size Board	inches	60 x 60
Max Thickness	inches	≤ 20"
Alternate Sizing & Purities	Standard | Metric	Contact us
Notes:	1Temp rating in vacuum or inert atmosphere