White alumina powder F400 for Al2O3 advanced ceramics
Product Introduction of White alumina powder F400 for Al2O3 advanced ceramics
White alumina powder F400 for Al2O3 advanced ceramics is made from high-quality alumina by melting above 2000 in the electric arc furnace and cooling. It is white with the main crystal phase alpha-Al2O3. The white alumina produced in titling electric arc furnaces has the advantage of high bulk density and low porosity and good volume stability and thermal shock resistance. As one of the most commonly used corundum in the abrasive industry, White fused alumina has a long history in applications because of its high hardness and good self-sharpening advantages. By adopting high-quality grade materials, a strict quality control system, and developed production technology, HAIXU’s white fused alumina gets high purity, stable quality, and good distribution.
The WFA micro-powder from Haixu Abrasives is acid-washed and gets water pickled, by this process, the white fused alumina powder is with better purity and better grit size distribution.
Typical chemical analysis of White alumina powder F400 for Al2O3 advance ceramics
| AL2O3 | 99.27% |
| Fe2O3 | 0.06% |
| Na2O | 0.30% |
| K2O | 0.03% |
| SiO2 | 0.14% |
| CaO | 0.05% |
| MgO | 0.01% |
| L.I.O. | 0.12% |
Typical physical properties of White alumina powder F400 for Al2O3 advance ceramics
| Hardness: | Mohs:9.0 |
| Maximum service temperature: | 1900 °C |
| Melting Point: | 2250 °C |
| Specific Gravity: | 3.95g/cm3 |
| Volume density | 3.6g/cm3 |
| Oil absorption | 10% |
| Whiteness: | 85% |
| Ph Value | 7.53 |
| Particle shape: | Angular |
The particle size distribution of White alumina powder F400 for Al2O3 advance ceramics
| D10(um): 10.336 | D50(um): 19.106 | D90(um): 31.483 | D97(um): 37.748 | D(3,2)(um): 16.850 | D(4,3)(um): 20.164 | Span: 1.107 |
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The available sizes of White alumina powder for Al2O3 advance ceramics
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%) |
Product Feature of White alumina powder F400 for Al2O3 advance ceramics
The Al2O3 purity is high(99%min). So the hardness & grinding ability is high with good grinding efficiency.
High wear-resistance. Even in high-temperature circumstances, the strength is still excellent.
The white fused aluminum oxide powder is suspension treated by water. So it is of flowability and easy to scatter.
Low oil absorption especially for water-based paint.
Neutral property with PH value around 7-8.
High whiteness. It doesn’t affect the color of paints or coatings by adding Al2O3 powder.
Resistant to most corrosive alkali and acid. It doesn’t dissolve in water.
Resistant to high temperatures up to 1900 °C.
Good particle size consistency without big size grains. So it prevents scratching on the grinding substrate.
Applications of White alumina 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.
Raw material for polishing liquid, polishing wax, polishing paste, and lapping compound.
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.
Thermal glue, wear-resistance glues, Polyurethane adhesive, etc.
Dental application for removing decayed and sound tooth structure. Preparation for bonded restoration.
Production Details of White alumina powder F400
Product Qualification of White alumina powder F400
HAIXU Abrasives is certificated by ISO 9001:2015
Golden supplier of Alibaba for 13 years
Package of White alumina powder F400
1Metric Ton/Jumbo Bag
25KGS/PVC Bag,40Bags/Jumbo Bag
1 Metric Ton/Jumbo Bag/Pallet
Other customized packages are available
FAQ:
Q: Are you a manufacturer or trading company?
A: We are a professional manufacturer of white fused aluminum oxide. HAIXU Abrasives has white aluminum oxide manufacturing experience of 22 years. The white fused aluminum oxide powder is one of our best sellers.
Q: What is the difference between suspension-treated white fused alumina powder and fine powders?
A: The suspension-treated WFA powder is of even particle size distributions. The white fused alumina fine powder always goes 200#-0,320#-0 produced by milling and gets particle size by mesh sieving.
Q: What are the differences between the FEPA standard and the JIS standard for aluminum oxide powder?
A: They defined the particle size range with different standards. FEPA standard gets 14 grits from 63um-1 um. While JIS standard gets 19 grits from 63um-1um.
Q: Do you have a MOQ of WFA grain?
A: Generally no limit of MOQ. Even 25kgs(1 bag)is ok for us. But the logistic cost will be higher than normal.
Q: How do you make quality control on White fused aluminum oxide powder before delivery?
A: Besides inspection items such as chemical, and density, we check aluminum oxide powder sizes during and after production for each batch. We also keep samples of each batch for 3 months.
Q: What are the differences between fused aluminum oxide powder and calcined aluminum oxide powder?
A: They are produced by different processes. For fused ones, it is a melting and fusing process at a temperature of 2250 °C. The hardness and grinding performance are better. For calcined aluminum oxide powder, they are produced by a calcining process in an oven or a Tunnel kiln at a temperature of 1300°C or 1800°C. Calcined aluminum oxide is with kinds of crystal shapes. The price of calcined aluminum oxide powder is always lower than fused ones.
Q: Are free samples available from you?
A: Yes, we provide free samples within 1 kg. Express costs have to be borne by customers.
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