| Item | CN305 | CN303 | CN605 | CN603 |
| ZrO2(%) | ≥30 | ≥30 | ≥60 | ≥60 |
| Al2O3(%) | 48±2 | 48±2 | / | / |
| Fe2O3(%) | 0.5 | 0.5 | 0.5 | 0.5 |
| Cold Crushing Strength(Mpa) | ≥80 | ≥80 | ≥50 | ≥50 |
| Bulk Density(g/cm³) | 3.0±0.1 | 3.0±0.1 | 3.05±0.1 | 3.05±0.1 |
| Refractoriness(℃) | ≥1700 | ≥1700 | ≥1700 | ≥1700 |
| Moisture(%) | 5-7 | 3-5 | 5-7 | 3-5 |
