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Elmet Technologies

Unifrax Excelfrax® 1800 Board Microporous Insulation
Categories: Ceramic; Oxide; Silicon Oxide

Material Notes: Unifrax Corporation's Excelfrax® microporous insulation technology is a family of products which all exhibit superior insulating characteristics. Excelfrax microporous insulation is composed of inorganic oxides, primarily fumed silica. Silicates and opacifiers are added to improve the material performance. Microporous materials are very efficient insulation products. These products actually have thermal conductivity values lower than still air.

Excelfrax 1800 Board is a high-temperature, rigid, microporous material specifically designed for applications where a strong, highly efficient insulating material is required. Excelfrax 1800 Board is available in thicknesses up to 2" and can be field fabricated to meet specific appliation requirements. Some typical applications for Excelfrax 1800 Board include back-up insulation in high-temperature furnaces (steel, glass, ceramic, aluminum), aluminum launders, and aluminum transfer ladles.

Information Provided by Unifrax I LLC

Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesMetricEnglishComments
Density 0.231 g/cc0.00833 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Compressive Strength 1.10 MPa160 psiCold Crushing Strength; DIN 51067 / DIN 53421
Compression Set 2.9 %
@Pressure 0.100 MPa
2.9 %
@Pressure 14.5 psi
 
Thermal PropertiesMetricEnglishComments
Specific Heat Capacity 0.800 J/g-°C
@Temperature 32.0 - 800 °C
0.191 BTU/lb-°F
@Temperature 89.6 - 1470 °F
Thermal Conductivity  0.0190 W/m-K
@Temperature 20.0 °C
0.132 BTU-in/hr-ft²-°F
@Temperature 68.0 °F
DIN 51046
 0.0210 W/m-K
@Temperature 200 °C
0.146 BTU-in/hr-ft²-°F
@Temperature 392 °F
DIN 51046
 0.0250 W/m-K
@Temperature 400 °C
0.174 BTU-in/hr-ft²-°F
@Temperature 752 °F
DIN 51046
 0.0300 W/m-K
@Temperature 600 °C
0.208 BTU-in/hr-ft²-°F
@Temperature 1110 °F
DIN 51046
 0.0380 W/m-K
@Temperature 800 °C
0.264 BTU-in/hr-ft²-°F
@Temperature 1470 °F
DIN 51046
Maximum Service Temperature, Air 1000 °C1830 °FRecommended Operating Temperature
Minimum Service Temperature, Air 20.0 °C68.0 °FRecommended Operating Temperature
Shrinkage  1.0 %
@Temperature 800 °C
1.0 %
@Temperature 1470 °F
All sides, long term
 4.8 %
@Temperature 1000 °C
4.8 %
@Temperature 1830 °F
All sides, long term
 0.50 %
@Temperature 1000 °C,
Time 43200 sec
0.50 %
@Temperature 1830 °F,
Time 12.0 hour
Single sided
 
Component Elements PropertiesMetricEnglishComments
SiC 15 %15 %
SiO2 80 %80 %
 
Descriptive Properties
ColorGrey
Other Inorganics (%)5

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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