Product Description
Item | Specification | |
Floor & wall bricks | Other bricks | |
SiO2 % ≥ | 94.5 | 94.5 |
Al2O3 % ≤ | 1.5 | 1.5 |
Fe2O3 % ≤ | 1.5 | 1.5 |
CaO % ≤ | 2.5 | 2.5 |
Refractoriness under load ℃ 0.2 Mpa≥ | 1650 | 1650 |
Cold crushing strength Mpa ≥ | 40 | 35 |
Apparent porosity % ≤ | 22 | 24 |
true density g/cm3 ≤ | 2.33 | 2.34 |
Thermal expansion 1000℃ % ≤ | 1.28 | 1.30 |
Residual quartz % ≤ | 1.0 | 1.0 |
Permanent linear change 1450℃ 2h % | 0–0.2 | 0–0.2 |