Insulation bricks

Properties of JM series insulating bricks Products Items JM20JM23JM26JM28JM30Maximum Working Temp. 1100 1260 1430 1540 1650 Bulk Density, g/cm3, min 0.45 0.48 0.78 0.88 1.02 C. C. Strength, Mpa, min 0.8 1.1 1.6 2.1 2.5 Cold Bending Strength, Mpa, min 0.7 0.9 1.4 1.8 2.0 Linear Change after Reheating, % 24 hr, max 1080 1230 1400 1510 1620 0.1 0.2 0.2 0.2 0.5 Al2O3 content, min 35% 37% 56% 67% 73.4% Fe2O3 content, max 0.8% 0.7% 0.7% 0.6% 0.5% Thermal Conductivity W/m.k 260 0.12 0.14 0.32 0.33 0.41 540 0.44 0.16 0.34 0.35 0.43 8150.36 0.37 0.44 Thermal Shock Stability (times) from 1000, by cooling air20 30 30