White fused alumina lapping powder is an excellent polishing powder for stainless steel, aluminum alloy, copper, glass, and other materials. White fused aluminum oxide powder from us is an electrofused aluminum oxide powder. It is an aggressive grinding powder with high hardness, good toughness. White aluminum oxide is suitable not only for direct polishing with a micro polishing machine, but also suitable for making lapping products such as polishing wax, polishing stone, polishing liquid, etc. In the meanwhile, white aluminum oxide is an ideal additive for wear-resistance coating and ceramics.
white aluminum oxide lapping powder size distribution:
JIS standard:
| JIS Grit Size | D0(Micron) | D3(Micron) | D50(Micron) | D94(Micron) |
| #240 | ≤ 127 | ≤ 103 | 57.0±3.0 | ≥ 40 |
| #280 | ≤ 112 | ≤ 87 | 48.0±3.0 | ≥ 33 |
| #320 | ≤ 98 | ≤ 74 | 40.0±2.5 | ≥ 27 |
| #360 | ≤ 86 | ≤ 66 | 35.0±2.0 | ≥ 23 |
| #400 | ≤ 75 | ≤ 58 | 30.0±2.0 | ≥ 20 |
| #500 | ≤ 63 | ≤ 50 | 25.0±2.0 | ≥ 16 |
| #600 | ≤ 53 | ≤ 41 | 20.0±1.5 | ≥ 13 |
| #700 | ≤ 45 | ≤ 37 | 17.0±1.5 | ≥ 11 |
| #800 | ≤ 38 | ≤ 31 | 14.0±1.0 | ≥ 9.0 |
| #1000 | ≤ 32 | ≤ 27 | 11.5.±1.0 | ≥ 7.0 |
| #1200 | ≤ 27 | ≤ 23 | 9.5±0.8 | ≥ 5.5 |
| #1500 | ≤ 23 | ≤ 20 | 8.0±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 |
| #4000 | ≤ 11 | ≤ 8.0 | 3.0±0.4 | ≥ 1.8 |
| #6000 | ≤ 8.0 | ≤ 5.0 | 2.0±0.4 | ≥ 0.8 |
| #8000 | ≤ 6.0 | ≤ 3.5 | 1.2±0.3 | ≥ 0.6 |
FEPA standard:
| Grit Size | D3(um) | D50(um) | D94（um) |
| F230 | <82 | 53.0±3.0 | >34 |
| F240 | <70 | 44.5±2.0 | >28 |
| F280 | <59 | 36.5±1.5 | >22 |
| F320 | <49 | 29.2±1.5 | >16.5 |
| F360 | <40 | 22.8±1.5 | >12 |
| F400 | <32 | 17.3±1.0 | >8 |
| F500 | <25 | 12.8±1.0 | >5 |
| F600 | <19 | 9.3±1.0 | >3 |
| F800 | <14 | 6.5±1.0 | >2 |
| F1000 | <10 | 4.5±0.8 | >1 |
| F1200 | <7 | 3.0±0.5 | >1(at 80%) |
| F1500 | <5 | 2.0±0.4 | >0.8(at 80%) |
| F2000 | <3.5 | 1.2±0.3 | >0.5(at 80%) |
Applications of white aluminum oxide lapping powder
-Micro polishing and lapping for precise polishing. It is suitable for components such as stainless steel, Sapphire crystal, silicon wafer, etc.
-Polishing electronic components such as probes and needles.
-The main material for Whetstone, oil stone, polishing media, rubber bonded abrasives, etc.
-The main material for polishing abrasive tools such as nylon polishing wheel, Metallographic sandpaper, PVA polishing wheels, etc.
-Subsidiary material for diamond tools such as dry diamond polishing pads.
-Ceramic membrane filters material such as ceramic flat sheet membranes and ultrafiltration membrane.
-Wear resistance coatings for composite material such as printing rubber roller, Insulation board, laminated flooring coating, etc.
-Paint and coatings such as water-based urethane epoxy coating, etc.