Has brown corundum the same cost with garnet sand?
Brown corundum is made from baxite,with high hardness and toughness,In our mind,it is very expensive,higher too much than garnet sand.But in fact now there is one kind brown corundum,to be honest,we can call it low quality brown corundum, which has almost the same cost with garnet sand.
Now compare them as follows:
1.Appearance
| Garnet sand | Brown fused alumina |
 |  |
2.Main chemical compostion
| Item | Garnet sand | brown fused alumina |
| Al2O3 | 17-21% | 40-60% |
| SiO2 | 34-40% | 12-15% |
| Fe2O3 | 25-31 | 15-20% |
3.Main physical properties
| Item | Garnet sand | Brown fused alumina |
| Bulk Density | 1.8-1.9g/cm3 | 1.53-1.99g/cm3 |
| Specific Gravity | 3.8-4.1g/cm3 | ≥3.90g/cm3 |
| Mohs Hardness | 7.5-8.0 | 8.0-9.0 |
| Melting Point | 1300℃ | 2250℃ |
4.Applications
Both of them has been widely used in sandblasting,cutting,anti-slip material in coating etc.