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fication  specification Unit High-Alumina brick   
Physical Properties Bulk density kg/m3 2650   
Apparent porosity % 18   
Cold Crushing Strength kg/cm2 700   
Modulus of rupture kg/cm2 110   
permanent linear change after heating at 1600 oC % 1   
Alkali attack Index 0-10 0-1   
Chemical composition Alumina % 70   
Silica % 25   
Iron Oxide % 1.4   
Titania % 1.5   
Thermal expansion 400 oC % 0.28   
800 oC % 0.42   
1000 oC % 0.55   
1200 oC % 0.69   
1400 oC % 0.84   
Thermal Conductivity 400 oC w/m.k 1.62   
600 oC w/m.k 1.62   
800 oC w/m.k 1.63   
1000 oC w/m.k 1.67