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| Brown Fused Alumin a |
Brown fused alumina 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,polishin, and sand blasting and sand cleaning.
| Physical Properties |
| Color |
Dark Brown |
| Bulk Density |
115-125lb/cu.ft. |
| Specific Gravity |
3.9 |
| Grain Shape |
Angular/sharp |
| Hardness |
9 Mohs |
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| Chemical Composition (% by weight) |
Grit
No. |
16¨C30 |
36-60 |
70-90 |
100¨C120 |
150-180 |
220 |
Al2O3 |
94.5 - 97.0 |
93.5 min |
92.5 min |
TiO2 |
1.5 - 3.8 |
1.5 - 3.8 |
1.5 - 3.8 |
Magnetic Matters |
<0.0380
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<0.0280
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<0.0230
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<0.0230
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<0.0170
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<0.0170
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| Available grain sizes |
| Grit No. |
Micron |
Grit No. |
Micron |
Grit No. |
Micron |
| 10 |
2360 ~ 2000 |
30 |
710 ~ 600 |
80 |
212 ~ 180 |
| 12 |
2000 ~ 1700 |
36 |
600 ~ 500 |
90 |
180 ~ 150 |
| 14 |
1700 ~ 1400 |
40 |
500 ~ 425 |
100 |
150 ~ 125 |
| 16 |
1400 ~ 1180 |
46 |
425 ~ 355 |
120 |
125 ~ 106 |
| 20 |
1180 ~ 1000 |
54 |
355 ~ 300 |
150 |
106 ~ 75 |
| 22 |
1000 ~ 850 |
60 |
300 ~ 250 |
180 |
90 ~ 63 |
| 24 |
850 ~ 710 |
70 |
250 ~ 212 |
220 |
75 ~ 53 |
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