White Fused Alumina Micro Powder is suitable for making bonded and coated grinding tools, wet or dry, Sandblasting, ultra-fine grinding and polishing in crystal and electronic industry, and making advanced refractory materials and materials with high tensile strength. Also, it can be used as a catalyst, insulator, and precision casting sand, etc. White fused alumina powder is also widely used in the emerging industry of wood flooring, circuit boards, special coatings, and polishing waxes, etc.
White Fused Alumina Fine Powder‘s property is more concentrated in particle size distribution than an ordinary fine powder, making refractory and foundry the application effect better.
White Fused Alumina Fine Powder
| Using | Specifications | The main chemical components % | |||||
| Al2O3 | Fe2O3 | SiO2 | Na2O | CaO | |||
| Refractory | Fine powder | 180#—0 | ≥99.0 | <0.05 | <0.05 | ≤0.35 | － |
| 240#-0 | |||||||
| 320#-0 | |||||||
| Foundry | Fine powder | 200#-0 | ≥99.0 | ≤0.1 | ≤0.1 | ≤0.35 | － |
| 270#-0 | |||||||
| 320#-0 | |||||||
White Fused Alumina Powder Micro Series Sizes—JIS Standard
| Bonded abrasives micro size distribution | ||||||||
| (μm) | （μm） | |||||||
| Settlement pipe particle size analysis method | Electric-resistivity grain counter method | |||||||
| ds0 | ds3 | ds50 | ds94 | ds0 | ds3 | ds50 | ds94 | |
| #240 | 127 | 90 | 60±4.0 | 48 | 127 | 103 | 57±3.0 | 40 |
| #280 | 112 | 79 | 52±3.0 | 41 | 112 | 87 | 48±3.0 | 33 |
| #320 | 98 | 71 | 46±2.5 | 35 | 98 | 74 | 40±2.5 | 27 |
| #360 | 86 | 64 | 40±2.0 | 30 | 86 | 68 | 35±2.0 | 23 |
| #400 | 75 | 56 | 34±2.0 | 25 | 75 | 58 | 30±2.0 | 20 |
| #500 | 65 | 48 | 28±2.0 | 20 | 63 | 50 | 25±2 | 16 |
| #600 | 57 | 43 | 24.0±1.5 | 17 | 52 | 41 | 20±1.5 | 13 |
| #700 | 50 | 39 | 21.0±1.3 | 14 | 45 | 37 | 17±1.3 | 11 |
| #800 | 46 | 35 | 18.0±1.0 | 12 | 38 | 31 | 14±1.0 | 9 |
| #1000 | 42 | 32 | 15.5±1.0 | 9.5 | 32 | 27 | 11.5±1.0 | 7 |
| #1200 | 39 | 28 | 13.0±1.0 | 7.8 | 27 | 23 | 9.5±0.8 | 5.5 |
| #1500 | 36 | 24 | 10.5±1.0 | 6 | 23 | 20 | 8.0±0.6 | 4.5 |
| #2000 | 33 | 21 | 8.5±0.7 | 4.7 | 19 | 17 | 6.7±0.6 | 4 |
| #2500 | 30 | 18 | 7.0±0.7 | 3.6 | 16 | 14 | 5.5±0.5 | 3 |
| #3000 | 28 | 16 | 5.7±0.5 | 2.8 | 13 | 11 | 4.0±0.5 | 2 |
| #4000 | 4.7±0.4 | 11 | 8 | 3.0±0.4 | 1.3 | |||
| #6000 | 8 | 5 | 2.0±0.4 | 0.8 | ||||
| #8000 | 6 | 3.5 | 1.2±0.3 | 0.6（ds75） | ||||
| #10000 | 0.8±0.2 | |||||||
White Fused Alumina Powder Micro Series Sizes—FEPA Standard
| F230-F2000 bonded abrasives micro size distribution | ||||||
| (μm) | （μm） | |||||
| Settlement pipe particle size analysis method | Photoelectricity settlement method | |||||
| ds3 | ds50 | ds94 | ds3 | ds50 | ds94 | |
| F230 | 77 | 55.7±3.0 | 38 | 82 | 53.0±3.0 | 34 |
| F240 | 68 | 47.5±2.0 | 32 | 70 | 44.5±2.0 | 28 |
| F280 | 60 | 39.9±1.5 | 25 | 59 | 36.5±1.5 | 22 |
| F320 | 52 | 32.8±1.5 | 19 | 49 | 29.2±1.5 | 16.5 |
| F360 | 46 | 26.7±1.5 | 14 | 40 | 22.8±1.5 | 12 |
| F400 | 39 | 21.4±1.0 | 10 | 32 | 17.3±1.0 | 8 |
| F500 | 34 | 17.1±1.0 | 7 | 25 | 12.8±1.0 | 5 |
| F600 | 30 | 13.7±1.0 | 4.6 | 19 | 9.3±1.0 | 3 |
| F800 | 26 | 11.0±1.0 | 3.5 | 14 | 6.5±1.0 | 2 |
| F1000 | 23 | 9.1±0.8 | 2.4 | 10 | 4.5±0.8 | 1 |
| F1200 | 20 | 7.6±0.5 | 2.4 | 7 | 3.0±0.5 | 80% 1 |
| F1500 | 5 | 2.0±0.4 | 80% 0.8 | |||
| F2000 | 3.5 | 1.2±0.3 | 80% 0.5 | |||
| F2500 | 0.8±0.1 | |||||
| F3000 | 0.4±0.5 | |||||
White Fused Alumina Powder Micro Series Sizes—P Standard
| (μm) | ||||
| Settlement pipe particle size analysis method | ||||
| ds0 | ds3 | ds50 | ds94 | |
| P240 | 110 | 81.7 | 58.5±2.0 | 44.5 |
| P280 | 101 | 74 | 52.2±2.0 | 39.2 |
| P320 | 94 | 66.8 | 46.2±2.0 | 34.2 |
| P360 | 87 | 60.3 | 40.5±2.0 | 29.6 |
| P400 | 81 | 58.9 | 35.5±1.5 | 25.2 |
| P500 | 77 | 48.3 | 30.2±1.5 | 21.5 |
| P600 | 72 | 43 | 25.8±1.0 | 18 |
| P800 | 67 | 38.1 | 21.8±1.0 | 15.1 |
| P1000 | 63 | 33.7 | 18.3±1.0 | 12.4 |
| P1200 | 58 | 29.7 | 15.3±1.0 | 10.2 |
| P1500 | 58 | 25.8 | 12.6±1.0 | 8.3 |
| P2000 | 58 | 22.4 | 10.3±0.8 | 6.7 |
| P2500 | 58 | 19.3 | 8.4±0.5 | 5.4 |
CHINA GB White Fused Alumina Powder Micro Series Sizes—W Micro National Standard
| Size | distribution(μm) |
| W63 | 63~50 |
| W50 | 50~40 |
| W40 | 40~28 |
| W28 | 28~20 |
| W20 | 20~14 |
| W14 | 14~10 |
| W10 | 10~7 |
| W7 | 7~5 |
| W5 | 5~3.5 |
| W3.5 | 3.5~2.5 |
| W2.5 | 2.5~1.5 |
| W1.5 | 1.5~1 |
| W1 | 1~0.5 |
| W0.5 | 0.5~0 |
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