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Elmet Technologies

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Touchstone CFOAM® 20 Structural Carbon Foam
Categories: Carbon; Other Engineering Material; Composite Core Material

Material Notes: CFOAM, developed by Touchstone Research Laboratory, Ltd., is a next generation structural material which is inexpensive, lightweight, fire-resistant, impact-absorbing, and which can be thermally insulating or conducting and whose electrical conductivity can be varied over seven orders of magnitude. It can be fabricated in a variety of shapes, sizes, and densities to meet the property requirements of specific applications.

These foams will not off-gas at elevated temperatures and will not support ignition. Unlike most metals and ceramics, CFOAM mechanical properties do not deteriorate with increased temperature if protected from oxidization, making carbon foams an attractive thermal protection material. Carbon foams also are tolerant to impact damage and can be repaired in-place using carbonaceous adhesives. They can be bonded easily to dissimilar materials, such as metals or PMCs, for oxidation or further impact protection, respectively.

Results from ASTM E1354, ASTM E1515, MIL-STD-1623, Coast Guard IMO, and FTP Code Part I and Part III indicate that CFOAM will pass all key fire tests including radiant panel, smoke generation, toxicity, cone calorimeter, fire resistance, and room corner tests.

Information provided by Touchstone Research Laboratory.

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Physical PropertiesOriginal ValueComments
Density 20.0 lb/ft³ASTM D1622
 
Mechanical PropertiesOriginal ValueComments
Tensile Strength, Ultimate >= 300 psiASTM C297
Tensile Modulus 60000 psiASTM C297
Compressive Strength >= 1100 psiASTM D365
Compressive Modulus 90000 psiASTM D365
Shear Strength >= 190 psiTorsional Shear
 
Electrical PropertiesOriginal ValueComments
Electrical Resistivity 0.069 ohm-cmStandard
 0.0025 - 2.5e+6 ohm-cmTailorable; ASTM D4496
 
Thermal PropertiesOriginal ValueComments
CTE, linear 2.80 µin/in-°F
Thermal Conductivity 0.250 W/m-K
@Temperature 23.0 °C
 0.700 W/m-K
@Temperature 500 °C
 1.00 W/m-K
@Temperature 1000 °C
 4.00 W/m-K
@Temperature 2000 °C
Maximum Service Temperature, Air >= 570 °F
Maximum Service Temperature, Inert >= 3000 °C
 
Descriptive Properties
Fire ResistanceISO 1182, ASTM E1354, ASTM E119, IMO FTP Cote Pt. I & III, UL1709Pass

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 go back to viewing the property data in MatWeb's normal format.

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ETOUCH01A / 161706

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