Metric Felt Company
708-479-7979
	Typical Properties of Carbon and Graphite Felts
		English Units				S.I. Units
		Unit	Value			Unit	Value
			CH Grade	GH Grade			CH Grade	GH Grade
Carbon Content		wt%	94	99.7		wt%	94	99.7
Ash Content		wt%	1	0.03		wt%	1	0.03
Thermal Conductivity		Btu●in/h●	0.37	0.48		W/m●°K	0.053	0.069
at 120° F (50°)		ft2●°F
Electrical Resistivity
at 70° F (23° C)
Longitudinal		10-3	85-103	80-100		10-3	220-260	200-250
Transverse		Ohm●in	54-70	75-85		Ohm●in	138-180	200-209
Tensile Strength
at 70° F (23° C)
Longitudinal		psi	27	8		Pa	0.19	0.06
Transverse		psi	39	13		Pa	0.27	0.09
Splitting Resistance
at 70° F (23° C)
Longitudinal		lb/in	0.2	0.09		N/m	35	16
Transverse		lb/in	0.2	0.08		N/m	35	14
Linear Shorinkage		%	1	0		%	1	0
			Availalble Materials
Nominal Thickness in (mm)			Nominal Weight, lb/yd2 (kg/m2)
			CH Grade			GH Grade
1/8 ( 3)			0.5 (0.27)			0.5 (0.27)
1/4 (6)			.09 (0.49)			.09 (0.49)
3/8 (10)			1.8 (0.98)			1.8 (0.98)
1/2 (13)			2.0 (1.08)			1.9 (1.03)
3/4 (19)			3.0 (1.63)			2.8 (1.52)
1   (25)			4.3 (2.33)			3.5 (1.90)
All are available as rolls from 3 to 21 yards (2.74 to 19.2) in length and in widtsh to 42" (1.07m).
Special size pieces can b e cut per customer cupplied drawings for furnace kits and for fabrication of
thermal isnulation systems in conjunction with other materials.