Brown corundum (Al2O3) is grinding，blasting ， polishing abrasives， used in various areas (domestic glassware, jewellery, gems, optical glass, etc.).
BRASSIVE GRADE
| Chemical Properties (% wt) | Item | Typical | Min | Max |
| Al2O3 | 95.50 | 95.50 | 96.00 | |
| Fe2O3 | 0.15 | – | 0.30 | |
| SiO2 | 0.88 | – | 1.20 | |
| TiO2 | 2.70 | 2.50 | 3.20 | |
| Physical Properties(% wt) | Magnetics | 0.03 | – | 0.05 |
| Moisture | 0.05 | – | 0.20 | |
| Hardness | 2090 Knoop | 9 Mohs | – | |
| Grain form | Angular-cubic | |||
| Bulk density g/cm3 | 3.94 | 3.90 | – | |
| Grit sizes | A full range of size from # 10 to # 320 TO ANSI,ISO and FEPA specifications | |||
| Packing | In 1,000-1,500 kilos super sacks,or 25 kilos paper bags Special quantity packaging and labeling available. | |||
Application：
