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Specialty Compounds RTP Company

Thermal Ceramics Kaowool 822 Millboard
Categories: Ceramic; Oxide; Silicon Oxide

Material Notes: Thermal Ceramics Kaowool Millboard products are processed from a slurry consisting of Kaowool ceramic fibers, fillers and binders. The fiber raw material is Kaolin, a naturally occurring high-purity alumina-silica fireclay. Kaowool Millboard products are strong, thin, durable ceramic fiber based boards having a variety of high-temperature applications. Although these products were formulated and designed to replace asbestos millboard, their potential use extends into more conventional refractory fiber applications. Their use should be considered whenever there is a need for a thin, durable board with excellent insulating characteristics.

Features:

  • Asbestos replacement millboard
  • Thin durable insulation and gasketing
  • Easy to install
  • Thickness tolerance of ± 0.0315" (0.7875 mm)
  • Suitable for saw or die cutting
  • Excellent backup insulation
  • Grade 830 excellent for molten metal contact applications
  • 2000°F to 2700°F (1482°C) use limits
  • Applications:

  • High-temperature gaskets
  • High-temperature roll covering
  • Fire protection
  • Thermal barrier
  • Backup insulation in rotary kilns

    Information provided by Thermal Ceramics

    Data has not been recently verified. Please contact manufacturer for current information.

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    Physical PropertiesMetricEnglishComments
    Density 0.881 g/cc0.0318 lb/in³
    Moisture Absorption 0.50 %0.50 %
    Loss On Ignition 5.0 - 7.0 %
    @Temperature 538 °C
    5.0 - 7.0 %
    @Temperature 1000 °F
     
    Mechanical PropertiesMetricEnglishComments
    Modulus of Rupture 0.00448 - 0.00517 GPa0.650 - 0.750 ksi
    Compressive Yield Strength 0.340 - 0.510 MPa49.3 - 74.0 psiat 5% deformation
     0.690 - 0.860 MPa100 - 125 psiat 10% deformation
     1.72 - 2.06 MPa249 - 299 psiat 15% deformation
     
    Thermal PropertiesMetricEnglishComments
    Thermal Conductivity  0.115 W/m-K
    @Temperature 260 °C
    0.800 BTU-in/hr-ft²-°F
    @Temperature 500 °F
     0.128 W/m-K
    @Temperature 538 °C
    0.890 BTU-in/hr-ft²-°F
    @Temperature 1000 °F
     0.141 W/m-K
    @Temperature 816 °C
    0.980 BTU-in/hr-ft²-°F
    @Temperature 1500 °F
     0.156 W/m-K
    @Temperature 1090 °C
    1.08 BTU-in/hr-ft²-°F
    @Temperature 2000 °F
    Melting Point 1760 °C3200 °F
    Maximum Service Temperature, Air 1090 °C2000 °F
     
    Component Elements PropertiesMetricEnglishComments
    Al2O3 35 %35 %
    Other 6.0 - 8.0 %6.0 - 8.0 %
    SiO2 63 %63 %

    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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