| Chemical analysis (standard) | ||
| % | Typical | Guaranteed |
| Al2O3 | 40,03 | min. 38,0 |
| SiO2 | 55,00 | |
| Fe2O3 | 1,20 | max. 1,5 |
| TiO2 | 3,00 | – |
| CaO | 0,20 | – |
| MgO | 0,09 | – |
| Na2O | 0,10 | max. 0,5 |
| K2O | 0,10 | |
| Physical properties | |||
| Typical | Guaranteed | ||
| Bulk density | 2,56 | 2,50 | g/cm3 |
| Water absorption | 1,36 | – | % |
| Apparent porosity | 3 | – | % |