White fused aluminum oxide al2o3 corundum for magnet polishing
White fused aluminum oxide was made from the high quality alumina by melting above 2000 in the electric arc furnace and cooling. It is white with the main crystal phase alpha-Al2O3.
Al2O3 | 99.2-99.7% |
Fe2O3 | 0.04-0.08% |
Na2O | 0.25-0.35% |
SiO2 | 0.01-0.05% |
Sample | free |
| Size | D0 | D3 | D50 | D94 |
| 240# | ≤127 | ≤103 | 57±3.0 | ≥40 |
| 280# | ≤112 | ≤87 | 48±3.0 | ≥33 |
| 320# | ≤98 | ≤74 | 40±2.5 | ≥27 |
| 360# | ≤86 | ≤66 | 35±2.0 | ≥23 |
| 400# | ≤75 | ≤58 | 30±2.0 | ≥20 |
| 500# | ≤63 | ≤50 | 25±2.0 | ≥16 |
| 600# | ≤53 | ≤41 | 20±1.5 | ≥13 |
| 700# | ≤45 | ≤37 | 17±1.5 | ≥11 |
| 800# | ≤38 | ≤31 | 14±1.0 | ≥9 |
| 1000# | ≤32 | ≤27 | 11.5±1.0 | ≥7 |
| 1200# | ≤27 | ≤23 | 9.5±0.8 | ≥5.5 |
| 1500# | ≤23 | ≤20 | 8±0.6 | ≥4.5 |
| 2000# | ≤19 | ≤17 | 6.7±0.6 | ≥4.0 |
| 2500# | ≤16 | ≤14 | 5.5±0.5 | ≥3.0 |
| 3000# | ≤13 | ≤11 | 4.0±0.5 | ≥2.0 |
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