Brown fused alumina (brown aluminium oxide abrasive gains) is made from high quality bauxite by fusing in an electric arc furnace at high temperature. It has good toughness and high hardness. It is suitable for manufacturing of vitrified and resin bonded tools, and for lapping,polishing, and sand blasting and sand cleaning.
| Color |
Dark Brown |
| Bulk Density, g/cm3 |
1.21-1.85 |
| Specific Gravity |
3.9 |
| Grain Shape |
Angular/sharp |
| Hardness, MOH |
9 |
| Grit No. |
16-90 |
100-180 |
220 |
| Al2O3 |
95.0 – 97.0 |
93.5 min |
92.5 min |
| TiO2 |
1.5 – 3.8 |
1.5 – 3.8 |
1.5 – 3.8 |
|
Grit No. |
Micron |
Grit No. |
Micron |
Grit No. |
Micron |
Grit No. |
Micron |
|
12 |
2000 ~ 1700 |
24 |
850 ~ 710 |
54 |
355 ~ 300 |
100 |
150 ~ 125 |
|
14 |
1700 ~ 1400 |
30 |
710 ~ 600 |
60 |
300 ~ 250 |
120 |
125 ~ 106 |
|
16 |
1400 ~ 1180 |
36 |
600 ~ 500 |
70 |
250 ~ 212 |
150 |
106 ~ 75 |
|
20 |
1180 ~ 1000 |
40 |
500 ~ 425 |
80 |
212 ~ 180 |
180 |
90 ~ 63 |
|
22 |
1000 ~ 850 |
46 |
425 ~ 355 |
90 |
180 ~ 150 |
220 |
75~53 |
