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JM26 Mullite Insulation Brick

Al2O3: 54-56%

Bulk Density: 0.7-1.0g/cm3

High porosity

Small volume density

High mechanical intensity

Small thermal conductivity

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JM26 mullite insulation brick is an advanced product with high efficiency, energy saving, low carbon and environmental protection, manufactured according to ASTM standard. JM series products are the best heat insulation materials for various industrial furnaces in metallurgy, aluminum, petrochemical, electric power, glass ceramics and other industries.


  1. High porosity.
  2. Small volume density.
  3. Good insulation effect.
  4. High mechanical intensity.
  5. Small thermal conductivity.


JM26 Mullite Insulation BrickABCD
Volume density (g/cm3)
Reheating Linear Change 1300℃*12h, %-0.9-0.7-0.5-0.5
Cold Compression Strength (Mpa)
Modulus of Rupture (Mpa)
Thermal Conductivity 350℃w/m·k0.
Al2O3 (%)54555656
SiO2 (%)42.541.540.540.5
Fe2O3 (%)


  1. Metallurgical Industry: blast furnace, hot blast furnace, heating furnace, etc.
  2. Carbon industry: carbon furnace, etc.
  3. Ceramic industry: roller kiln, kiln, etc.
  4. Glass industry: glass furnace regenerator, etc.
  5. Aluminum electrolysis industry: aluminum reduction cell, etc.
  6. Other industries: tunnel kiln, shuttle kiln, etc.


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