... //Fe2O3≤1≤1≤1≤1Others≤5≤10≤5≤3Material density, g/cm31.8-2.51.8-2.51.6-2.22 ... .5-3.2Thermal shocking, °C ≥200300350200Softening temperature, °C ≥1300140014501700Specific heat, J/g. °C 900-1000900-12001000-12001300-1500Specific heat conductance, W/m ...