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Rulon Bearings

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Thermal Ceramics MRI 95C Pre-Fired Refractory Shapes
Categories: Ceramic; Oxide; Aluminum Oxide

Material Notes: MRI pressed fired shapes are used in a variety of alloy melt-pour systems. The pressed manufacture process meets the tight tolerance specifications required by end users. Precise size dies and detailed product inspection provide the user with a high-quality, dimensionally accurate refractory shape.

MRI 95C 95% alumina, cement bonded composition. Thermal shock resistant mix for tundishes and general use. Provides superior surface finish and low silica content.

Features:

  • Variety of available compositions in high alumina and fused silica.
  • Extreme tight tolerance capabilities
  • Low gas permeability to ferrous alloys
  • Good non-wetting characteristics
  • Excellent mechanical strength
  • Proven performance in super alloy, investment
  • Applications:

  • Standard size crucibles and liners for induction melting and investment casting
  • Tundish nozzles - meet user demands on pour stream and pour speeds
  • Gas atomized nozzles - for custom-designed atomizing powder metal systems
  • Information provided by Thermal Ceramics

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

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    Physical PropertiesOriginal ValueComments
    Bulk Density 2.74 g/cc
    Porosity 25 %Apparent
     
    Mechanical PropertiesOriginal ValueComments
    Modulus of Rupture 0.950 ksi
     
    Thermal PropertiesOriginal ValueComments
    CTE, linear 4.50 µin/in-°F
    @Temperature 20.0 °C
    Thermal Conductivity 18.3 BTU-in/hr-ft²-°F
    @Temperature 1090 °C
    ASTM C417
    Maximum Service Temperature, Air 3270 °F
     
    Component Elements PropertiesOriginal ValueComments
    Al2O3 96 %
    Alkalis 0.30 %
    CaO+MgO 3.3 %
    Fe2O3 0.10 %
    SiO2 0.10 %
     
    Descriptive Properties
    TiO2 contenttraces

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    CTHERM145 / 2465

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