Mullite corundum brick overcome the weakness what alumina hollow brick don`t antistrip resistance to high temperature.It is understanding liner material for building high temperature furnace.

AL2O3% Fe2O3% Bulk density
% Cold compressive strength
MPa Normal temperature anti-adhesive strength MPa Initial softenting point under load Highest service temperature ℃
Middle light mullite corundum brick ≥75 ≤.5 1.5-1.7 ≥40 ≥11 ≥1600 1550