Item Brand |
Low Creep Clay Fire brick | Low porosity clay brick | Special high alumina brick | |
Chemical Composition |
Al2o3(%) | 42~53 | >42 | >58 |
Fe2o3(%) | 1.6 | 2.0 | 1.5 | |
Cao+Mgo(%) | 0.7 | 0.7 | 0.7 | |
Na2o+k2O(%) | 0.8 | 0.8 | 0.8 | |
Bulk Density g/cm3 | 2.2 | 2.2 | 2.45 | |
Apparent Porosity | 17 | 17 | 16 | |
Cold Crushing Strength | 40 | 40 | 50 | |
0.2MPa Refractoriness Under Load |
1450 | 1450 | 1600 | |
High temperature creep%(1280℃,0.2mpa,25h)CS | 0.4 | - | 0.4 | |
High temperature flexural strength | 1200℃ | 10 | - | - |
1350℃ | 4 | - | 6 | |
Thermal expansion rate (20℃-100℃)< | 0.7 | 0.7 | 0.7 |