Different purity of brown fused alumina
Brown Fused Alumina is made from Calcined Bauxite. It is a hard and tough material, used in grinding wheels manufacturing and coated products，also used for shot blasting and as polishing media.
In China market,there are different purity(Al2o3%) of brown fused alumina,mainly grades is as follows:
| A grade | 95%min |
| B grade | 85-92% |
| C grade | 70-80% |
| D grade | 60-70% |
| E grade | 50-60% |