High Alumina Brick HA-60-70-75-80
High Alumina Brick HA-60
Item |
Standard |
Al2O3(%) |
≥60 |
SIO2(%) |
32 |
Fe2O3(%) |
≤1.7 |
Na2O+K2O(%) |
<2.3 |
Refractoriness |
1790 |
refractoriness under load 0.2mpa(℃) |
1450 |
Porosity(%) |
22 |
Bulk density(g/cm3) |
2.33 |
Cold cushing strength (mpa) |
≥50 |
Thermal expansion at 1000℃(%) |
≤0.3 |
Reheating shrinkingchange(%) 1500℃X24h |
-0.3 |
High Alumina Brick 75%
Specification:
Brand |
FR75 |
Al2O3(%) |
≥75 |
Fe2o3(%) |
≤2.0 |
Refractoriness |
1770 |
refractoriness under load 0.2mpa(℃) |
1520 |
Porosity(%) |
22 |
Bulk density(g/cm3) |
≥2.7 |
Cold cushing strength (mpa) |
≥60 |
Thermal expansion at 1000℃(%) |
≤0.5 |
High Alumina Brick 85%
Specification:
Brand |
FR85 |
Al2O3(%) |
≥85 |
Fe2o3(%) |
≤1.8 |
Refractoriness |
1830 |
refractoriness under load 0.2mpa(℃) |
1550 |
Porosity(%) |
22 |
Bulk density(g/cm3) |
≥2.8 |
Cold cushing strength (mpa) |
≥70 |
Thermal expansion at 1000℃(%) |
≤0.5 |