| Item | H55 | H62 | H65 | GMH53 | GMH60 |
| Al2O3(%) | ≥55 | ≥62 | ≥65 | ≥53 | ≥60 |
| SiO2(%) | -- | -- | -- | -- | -- |
| Fe2O3(%) | ≤1.2 | ≤1.2 | ≤1.2 | ≤1.2 | ≤1.0 |
| Bulk Density(g/cm3) | ≥2.45 | ≥2.5 | ≥2.5 | -- | -- |
| Cold Crushing Strength(110℃) (N/mm2) | ≥60 | ≥60 | ≥60 | ≥50 | ≥60 |
| Thermal Shock Resistance (Cycles) | -- | -- | -- | ≥20 | ≥25 |
| Thermal Expansion(%) | ≤0.55 | ≤0.55 | ≤0.55 | -- | -- |
| Apparent Porosity(%) | ≤17 | ≤17 | ≤17 | ≤18 | ≤18 |
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