Insulating Fire Brick

Insulating Fire Brick Index /brand RS-23 RS-26 RS-28 RS-30 RS-32 Classification temperature °C 1260 1430 1540 1650 1760 Bulk densitykg/m3 580 800 890 1030 1250 Moudulus of ruptureMPa 0.9 1.5 1.6 1.7 2.0 Cold crushing strengthMPa 1.2 2.4 2.6 2.8 3.4 Permanent Liner Change % °CxHr -0.1 -0.5 -0.8 -0.9 -0.9 1230X24 1400x24 1510x24 1620x24 1730x24 Thermal expansion coefficient (1100°C）% 0.45 0.50 0.55 0.60 0.65 Thermal conductivity (W/m.k) 400°C 0.17 0.24 0.30 0.40 0.49 600°C 0.19 0.27 0.32 0.42 0.50 800°C 0.22 0.30 0.35 0.44 0.51 1000°C 0.25 0.32 0.38 0.45 0.53 1200°C 0.35 0.39 0.47 0.55 Al2O3 % 45 50 64 72 76 Fe2O3 % 0.9 0.8 0.7 0.5 0.4 SiO2% 50 43 33 26 0.4 TiO2 % 1.2 1.3 0.9 0.5 0.3 CaO+ MgO % 0.7 0.6 0.4 0.3 0.2 K2O+ Na2O % 1.3 1.1 0.8 0.2 0.1