Item | Common Fire Clay Brick | |||
PN-35 | PN-40 | PN-42 | ||
Al2O3(%) | 35 | 40 | 42 | |
Fe2O3 (%) | - | - | 2.0 | |
Apparent Porosity(%) | 26 (28) | 24 (26) | 20 (22) | |
Cold Crushing Strength(%) | 30 (25) | 35 (30) | 45 (35) | |
0.2 MPa Refractoriness Under Load(℃) | 1320 | 1350 | 1400 | |
Permanent Linear Change(%) | 1400℃*2hr | -0.4~0.1 |