ANHYDROUS STEMMING
| Al2O3 | SiO2 | C | Volatile matter | Ash | After drying at 200℃ | 1200℃×3h | ||
| % | % | % | % | % | Bending strenght,MPa | Cold Crushing strenght,MPa | AP,% | BD,g/cm3 |
| ≥35 | ≥35 | ≥20 | ≤22 | ≤56 | ≥1.5 | ≥4 | ≤42 | ≥1.4 |

| Al2O3 | SiO2 | C | Volatile matter | Ash | After drying at 200℃ | 1200℃×3h | ||
| % | % | % | % | % | Bending strenght,MPa | Cold Crushing strenght,MPa | AP,% | BD,g/cm3 |
| ≥35 | ≥35 | ≥20 | ≤22 | ≤56 | ≥1.5 | ≥4 | ≤42 | ≥1.4 |
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