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High Alumina Bricks Table

SK36

SK38

BTA85

A90

Pyrometric Cone Equivalent  Orton Cone 35 – 36 37 – 38 >38 39 – 40
Refractoriness  °C 1,785 1,830 1,840 1,880
Bulk Density kg/m3 2,460 – 2,480 2,740 – 2,750 2,885 – 2,920 3,010 – 3,060
Apparent Porosity  % 18.0 – 19.0 17.0 – 18.0 17.0 – 18.0 16.0 – 17.0
Cold Crushing Strength  kg / cm2 450 – 480 720 – 750 900 – 1,000 900 – 1,000
Modulus of Rupture  kg / cm2 70 – 80 120 – 130 200 – 250 150 – 160
Reheat Test. Permanent Linear Change
After Heating at 1.400 ° C
 % + 0.5 + 1.00  + 1.0