Rayon Graphite Felt

Rayon graphite felt is a premium refractory insulation designed and manufactured for high-temperature vacuum and inert gas furnaces, among other applications. Our rayon felt is available in carbon and graphite grades that have been pre-fired / heat-treated to promote consistent insulation performance, higher purity, and reduced ash content. Felt grades can be purified to less than 20 ppm if needed. Material is rated for temperatures up to 5432℉ (3000℃). Our rayon graphite grade is pre-fired to 4532℉ (2500℃), whereas our rayon carbon grade is pre-fired to 3452℉ (1900℃).

Rayon felt is a premium soft insulation material that is manufactured from 100% rayon-based fiber precursor. In comparison to Pan, Rayon is pre-fired to high temperatures, has a higher carbon content, lower ash content, and lower thermal conductivity.

Properties	Unit	Rayon Carbon	Rayon Graphite
Density	g/cc	0.09	0.08
Linear Shrinkage1	%	1	Negligible
Water Absorption	%	1	Negligible
Carbon Content	%	≥ 99	≥ 99.9
Ash Content	%	≤ 0.25	≤ 0.02
Sulphur Content	%	≤ 0.07	≤ 0.035
Friability (Dusting)	%	≤ 1.5	≤ 2.5
Emissivity		0.99	0.99
Sublimation Temp	℉ | ℃	6512 | 3600	6512 | 3600
Surface Area (Nitrogen)	m2/g	0.6	0.7
Tensile Strength	MPa	0.13	0.10
Thermal Conductivity 2012℉ | 1150℃	W/mk	0.11	0.14
Vapor Pressure 4118℉ | 2270℃ 4424℉ | 2440℃ 4748℉ | 2620℃	microns	1 10 100	1 10 100
Temperature Rating2	℉ | ℃	5432 | 3000	5432 | 3000
Pre-fire temp	℉ | ℃	3452 | 1900	4532 | 2500
Stock Sizing	Standard	1/8"x42"x150' 1/4"x48"x100' 1/2"x48"x54' 1"x42"x24'	1/8"x42"x150' 1/4"x48"x100' 1/2"x48"x54' 1"x42"x24'
Alternate Sizing	Standard | Metric	Contact us	Contact us
Notes:	1Measured after heating to 5432F | 3000C 2Temp Rating in Vacuum or Inert Atmosphere