Fireclay Bricks Table

SK30

SK32

SK34

 K43

Pyrometric Cone Equivalent  Orton Cone 29 – 30 31 – 32 33 – 34 33 – 34
Refractoriness  °C 1,670 1,715 1,760 1,760
Bulk Density kg/m3 2,140 – 2,150 2,200 – 2,250 2,235 – 2,250 2,275 – 2,285
Apparent Porosity  % 19.0 – 20.0 18.0 – 19.0 17.0 – 18.0 17.0 – 18.0
Cold Crushing Strength  kg / cm2 220-250 220-320 300-350 350 – 400
Modulus of Rupture  kg / cm2 55 – 70 55 – 70 60 – 80 80 – 90
Reheat Test. Permanent Linear Change
After Heating at 1.400 ° C
 % 0.0 to – 0.06 0.0 to – 0.2  – 0.18  – 0.5

SK30

SK32

SK34

 K43

Pyrometric Cone Equivalent  Orton Cone 29 – 30 31 – 32 33 – 34 33 – 34
Refractoriness  °C 1,670 1,715 1,760 1,760
Bulk Density kg/m3 2,140 – 2,150 2,200 – 2,250 2,235 – 2,250 2,275 – 2,285
Apparent Porosity  % 19.0 – 20.0 18.0 – 19.0 17.0 – 18.0 17.0 – 18.0
Cold Crushing Strength  kg / cm2 220-250 220-320 300-350 350 – 400
Modulus of Rupture  kg / cm2 55 – 70 55 – 70 60 – 80 80 – 90
Reheat Test. Permanent Linear Change
After Heating at 1.400 ° C
 % 0.0 to – 0.06 0.0 to – 0.2  – 0.18  – 0.5