Brown Aluminum oxide
Brown Aluminum oxide belongs to the group of the electro-corundum.
Brown Aluminum oxide is produced by controlled melting fo the calcined bauxite in an electric arc furnace.
Brown Aluminum oxide is iron-free and extremely tough.
Applications
Reusable abrasive
Wear-resistant & refractory products
Grinding,lapping & polishing medium
Ceramic grinding wheels & grinding media
Blasting systems
Pressure blast systems
Injection blast cabinets
Typical Physical Properties
| Hardness | 9 mohs |
| Grain shape | Angular |
| Melting Point | 1950 C min |
| True density | 3.9-4.1g/cm3 |
| Bulk density | 1.5-2.1g/cm3(depends on the size) |
Typical Chemical Analysis
| Al2O3 | 94.55% |
| TiO2 | 2.25% |
| Fe2O3 | 0.1% |
| SiO2 | 1.82% |
| CaO | 0.30% |
| NaO | 0.25% |
Typical Size
| F-macrogrit | F8,F10,F12,F14,F16,F20,F22,F24,F30,F36,F40,F46 F54,F60,F70,F80,F90,F100,F120,F150,F180,F220 |
| Fepa standard | FEPA-Federation of European Producers of Abrasives |
| GB standard | Chinese stantard |
| JIS standard | Japanese Industry Standard |
| Other grain sizes can be produced if required. | |
| F-macrogrits sizes bonded | |
| Grit designation | Mean diameter in um |
| F4 | 4890 |
| F5 | 4125 |
| F6 | 3460 |
| F7 | 2900 |
| F8 | 2460 |
| F10 | 2085 |
| F12 | 1765 |
| F14 | 1470 |
| F16 | 1230 |
| F20 | 1040 |
| F22 | 885 |
| F24 | 745 |
| F30 | 625 |
| F36 | 525 |
| F40 | 438 |
| F46 | 370 |
| F54 | 310 |
| F60 | 260 |
| F70 | 218 |
| F80 | 185 |
| F90 | 154 |
| F100 | 129 |
| F120 | 109 |
| F150 | 82 |
| F180 | 69 |
| F220 | 58 |
