China Clay Refractory Brick Clay Bricks Clay Firebrick Clay Refractory Bricks for Furnace, Find details about China Refractory, Refractory Brick from Clay Refractory Brick Clay Bricks Clay Firebrick Clay Refractory Bricks for Furnace
Items | Fireclay brick | High alumina brick | ||||||
SK30 | SK32 | SK34 | SK35 | SK36 | SK37 | SK38 | SK40 | |
Al2O3,% ≥ | 30 | 32 | 38 | 45 | 55 | 65 | 70 | 82 |
Fe2O3,%≤ | 2.5 | 2.5 | 2 | 2 | 2 | 2 | 2 | 2 |
Refractoriness,SK | 30 | 32 | 34 | 35 | 36 | 37 | 38 | 40 |
Refractoriness,ºC | 1670 | 1710 | 1750 | 1770 | 1790 | 1820 | 1850 | 1920 |
Refractiriness under load,0.2Mpa | 1250 | 1350 | 1370 | 1420 | 1450 | 1480 | 1530 | 1600 |
Apparent porosity,% ≤ | 22-26 | 20-24 | 20-22 | 18-20 | 20-23 | 20-23 | 20-22 | 18-20 |
Bulk density,g/cm3 | 1.9-2.0 | 1.95-2.1 | 2.1-2.2 | 2.15-2.22 | 2.25-2.4 | 2.3-2.5 | 2.4-2.6 | 2.5-2.7 |
Cold crushing strength,Mpa ≥ | 20 | 25 | 30 | 40 | 45 | 50 | 60 | 70 |