NeoGraf GRAFOIL® GTB Standard Fluid Sealing Graphite Single Layer Gasketing Material

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NeoGraf GRAFOIL® GTB Standard Fluid Sealing Graphite Single Layer Gasketing Material
Categories:	Carbon; Graphite
Material Notes:	GRAFOIL® GTB flexible graphite sheet is a gasketing material containing no binders or fillers. Standard industrial grade GTB flexible graphite has an oxidation/corrosion inhibitor and is typically 98% graphite. Grade GTB is the facing material for grades GHR, GHE, GHP, and GHW laminates. GTB is used in most standard industrial fluid sealing applications, including: chemical, petrochemical, refinery, and steam service. While maintaining an effective seal, GRAFOIL® material exhibits virtually no creep relaxation. As a result, the need for periodic bolt tightening is greatly reduced. Formerly a product of GrafTech.
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Physical Properties	Metric	English	Comments

Bulk Density	1.00 g/cc	0.0361 lb/in³	Standard for 0.020", 0.040" 0.060" thick
	1.12 g/cc	0.0405 lb/in³	Standard for 0.005", 0.010", 0.015", 0.020", 0.025", 0.030", 0.060" thick
Thickness	130 microns	5.12 mil	Standard
	250 microns	9.84 mil	Standard
	380 microns	15.0 mil	Standard
	510 microns	20.1 mil	Standard
	640 microns	25.2 mil	Standard
	760 microns	29.9 mil	Standard
	1020 microns	40.2 mil	Standard
	1520 microns	59.8 mil	Standard
Ash	1.8 %	1.8 %

Chemical Properties	Metric	English	Comments
Ionic Impurities - Cl (Chloride)	10 ppm	10 ppm	Leachable

Mechanical Properties	Metric	English	Comments
Tensile Strength at Break	4.48 MPa	650 psi	Typical for 70 lb/ft³
Compression Set	85 % @Pressure 34.5 MPa	85 % @Pressure 5000 psi	Typical for 70 lb/ft³

Thermal Properties	Metric	English	Comments
Maximum Service Temperature, Air	525 °C	977 °F
Minimum Service Temperature, Air	-240 °C	-400 °F

Component Elements Properties	Metric	English	Comments
Carbon, C	98.2 %	98.2 %
Sulfur, S	0.055 %	0.055 %

Descriptive Properties
Compressibility (%)	43		at 5000 psi load; Typical for 70 lb/ft³

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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CGRAF929 / 107333

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