Physical Properties 

Working Temperature (°C) 1000 650
Bulk Density (kg/m3) ≤ 220 200 (+ 10%)
Flexural Strength (MPa) ≥ 0.40 ≥ 0.40
Temperature Limit. (°C) 1100 850
Linear Shrinkage (%)

(1000°C 3hrs)

  ≤ 1.5

(1050°C 12 hrs)

≤ 2.0  
Termal Cond. (W/M.K)

+0.00011t

≤ 0.054 ≤ 0.050
Loss on ignition (1025°C) (%) 7.5 7.5
Chemical Analysis SiO2 (%) 45 45
CaO (%) 45 45
Fe2O3 (%) 0.2 0.2
MgO 0.7 0.7
AL2O3 (%) 0.2 0.2
Na2O (%) 0.1 0.1
K2O (%) 0.2 0.2