Brief Introduction
High Alumina Refractory Bricks
Al2O3 % Min. | 55 | 65 | 75 | 58 | 55 | |
SiC % Min. | 5 | 4 | ||||
C % Min. | 14 | 12 | ||||
Fe2O3 % Max. | 2.0 | 2.0 | 2.0 | |||
Refractoriness ℃ Min. | 1770 | 1790 | 1790 | |||
Apparent Porosity % Max. | 19 | 19 | 19 | 13 | 15 | |
Refractoriness under Load 0.2MPa ℃ Min. | 1480 | 1500 | 1550 | 1630 | 1600 | |
Cold Crushing Strength MPa MPa Min. | 49 | 58.8 | 60 | 30 | 25 | |
Permanent Linear Change % | 1450℃x2h | |||||
1500℃x2h | 0~- 0.2 | |||||
Modulus of Rupture MPa Min. | 12 | 9 | ||||
Bulk Density g/cm3 Min. | 2.5 | 2.5 | ||||
Coefficient of average line expansion (1000℃) | 2.4x10-6 |
2.4x10-6 |