Fire Clay Brick for Common Usage
|
Brand |
SK-32 |
SK-34 |
SK-36 |
HA-60 |
HA-75 |
|
Al2O3(%) |
≥30 |
≥38 |
≥50 |
≥60 |
≥75 |
|
Fe2o3(%) |
≤3 |
≤2 |
≤1.5 |
≤1.5 |
≤1.2 |
|
Refractoriness |
1710 |
1750 |
1780 |
1790 |
1800 |
|
refractoriness under load 0.2mpa(℃) |
1300 |
1350 |
1450 |
1600 |
1650 |
|
Porosity(%) |
22 |
19-23 |
19-21 |
≤18 |
≤17 |
|
Bulk density(g/cm3) |
≥2.1 |
≥2.2 |
≥2.3 |
≥2.35 |
≥2.45 |
|
Cold cushing strength (mpa) |
≥25 |
≥30 |
≥50 |
≥70 |
≥80 |
|
Thermal expansion at 1000℃(%) |
≤0.6 |
≤0.6 |
≤0.3 |
≤0.6 |
≤0.6 |
