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Amatrium Materials AI
Thermal Ceramics TR-20 Block Insulation
Categories: Ceramic; Oxide; Silicon Oxide

Material Notes: TR-20 Block is a superior, high-temperature insulation for service to 2000°F (1095°C). According to ASTM testing procedures, TR-20 exhibits extremely high resistance to breakage to 2000°F (1095°C). Long, maintenance-free service and maximum operating efficiency is assured by TR-20’s unique combination of low conductivity and high stability. TR-20 is also very low in sulfur and iron, making it highly resistant to attack from atmospheric conditions and greatly reducing the possibility of product contamination.

These products can be manufactured in special shapes to fit.


  • Low thermal conductivity
  • Block construction 36" x 12"
  • Good high temperature strength
  • Variety of thicknesses up to 7”
  • Resistant to cryolite vapors


  • Side and end wall insulating material in carbon baking pits
  • Backup insulation in aluminum pot cells, reheat and pusher furnaces, copper reverberatory furnaces, and oil-fired water tube boilers

    Curved Block

  • Interior and exterior use on bustle pipes, hot air pipes, stacks and other curved or circular equipment
  • customer specifications, saving money on both installation and energy costs.

    Information provided by Thermal Ceramics

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

    Available Properties
    • Density, ASTM C303, at ambient temperature
    • Density, ASTM C303
    • Loss On Ignition
    • Porosity, ASTM C493
    • Modulus of Rupture, ASTM C203, at ambient temperature
    • Modulus of Rupture, ASTM C203
    • Compressive Strength, ASTM C165, at ambient temperature
    • Compressive Strength, ASTM C165
    • Specific Heat Capacity
    • Thermal Conductivity
    • Thermal Conductivity
    • Thermal Conductivity
    • Thermal Conductivity
    • Thermal Conductivity
    • Thermal Conductivity
    • Thermal Conductivity
    • Maximum Service Temperature, Air, Continuous
    • Shrinkage, ASTM C356, Linear
    • Al2O3
    • Alkalis
    • CaO
    • Fe2O3
    • MgO
    • SiO2
    • TiO2
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