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Rulon Bearings

Thermal Ceramics 2800 RPC Shapes
Categories: Ceramic; Oxide; Silicon Oxide

Material Notes: RPC 2800 is an insulating material produced by blending alumina-silicate fibers and alumina fibers with high purity silica binders. The polycrystalline alumina fibers form a matrix within the material, and give it high temperature capability. The high temperature capability is further enhanced by employing ammonia stabilized colloidal silica rather than sodium stabilized product. At elevated temperatures, residual sodium acts as a flux and reduces the refractories maximum use temperature.

Features:

  • No organic binders
  • Complex shape capability
  • Low thermal conductivity and minimal heat storage
  • High resistance to thermal shock and spalling
  • Low shrinkage
  • Light weight
  • Applications:

  • Bullnose tiles
  • Burner blocks
  • Combustion chamber construction
  • Diffusion furnaces
  • Flue and exhaust stack liners
  • Furnace components
  • General molten metal contact
  • Peep door frames and plugs
  • Heat shields
  • High temperature gaskets and seals
  • Hot tops for super alloy casting
  • Molten aluminum contact
  • Semiconductor processing equipment
  • Shapes for laboratory furnaces
  • Shapes in ammonia reformers
  • Information provided by Thermal Ceramics

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

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    Physical PropertiesMetricEnglishComments
    Density 0.256 g/cc0.00925 lb/in³
    Loss On Ignition 1.3 %1.3 %
     
    Mechanical PropertiesMetricEnglishComments
    Hardness, Shore A 47 - 5847 - 58ASTM D2240
    Modulus of Rupture 0.000455 GPa0.0660 ksiafter 24 hour isothermal soak
    Compressive Yield Strength 0.0700 MPa10.2 psiafter 24 hour isothermal soak, at 5% deformation
     0.110 MPa16.0 psiafter 24 hour isothermal soak, at 10% deformation
     
    Thermal PropertiesMetricEnglishComments
    Specific Heat Capacity 1.13 J/g-°C0.270 BTU/lb-°F
    Thermal Conductivity  0.0634 W/m-K
    @Temperature 260 °C
    0.440 BTU-in/hr-ft²-°F
    @Temperature 500 °F
    ASTM C210
     0.0922 W/m-K
    @Temperature 538 °C
    0.640 BTU-in/hr-ft²-°F
    @Temperature 1000 °F
    ASTM C210
     0.134 W/m-K
    @Temperature 816 °C
    0.930 BTU-in/hr-ft²-°F
    @Temperature 1500 °F
    ASTM C210
     0.193 W/m-K
    @Temperature 1090 °C
    1.34 BTU-in/hr-ft²-°F
    @Temperature 2000 °F
    ASTM C210
    Melting Point 1760 °C3200 °F
    Maximum Service Temperature, Air 1540 °C2800 °F
    Shrinkage  0.00 %
    @Temperature 816 °C,
    Time 86400 sec
    0.00 %
    @Temperature 1500 °F,
    Time 24.0 hour
     0.10 %
    @Temperature 982 °C,
    Time 86400 sec
    0.10 %
    @Temperature 1800 °F,
    Time 24.0 hour
     0.80 %
    @Temperature 1090 °C,
    Time 86400 sec
    0.80 %
    @Temperature 2000 °F,
    Time 24.0 hour
     0.90 %
    @Temperature 1200 °C,
    Time 86400 sec
    0.90 %
    @Temperature 2200 °F,
    Time 24.0 hour
     1.0 %
    @Temperature 1540 °C,
    Time 86400 sec
    1.0 %
    @Temperature 2800 °F,
    Time 24.0 hour
     1.2 %
    @Temperature 1320 °C,
    Time 86400 sec
    1.2 %
    @Temperature 2400 °F,
    Time 24.0 hour
     1.5 %
    @Temperature 1430 °C,
    Time 86400 sec
    1.5 %
    @Temperature 2600 °F,
    Time 24.0 hour
     
    Component Elements PropertiesMetricEnglishComments
    Al2O3 40 %40 %
    SiO2 60 %60 %

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