Mullite Insulating Brick
Item   / TypesHJM-23HJM-26HJM-28HJM-30HJM-32
 Chemical   Composition (%)Al2O34055657075
SiO25042332622
Fe2O310.80.70.70.5
TiO21.21.30.90.50.3
CaO+   MgO0.70.60.20.30.2
K2O+ Na2O1.31.10.80.20.1
Classification temperature  (ºC)13001420153015501650
Bulk Density (g/cm3)0.60.80.911.1
Cold Crushing Strength (MPa)1.21.82.53.33.5
Modulus   of rupture (MPa)11.72.33.13.2
Permanent   linear change (CT x24h)%0.60.60.80.91.01
Thermal   Expansion(%) @ 1000ºC0.50.520.520.530.6
Thermal   conductivity (W/m.k)350ºC0.180.270.320.380.45
400ºC0.20.290.340.40.45
600ºC0.240.320.360.420.47