WFA F320 mesh for wear resistance additive
WFA F320 mesh (white fused alumina micro powder) is a high-purity fused alumina wear-resistant additive with a main component of Al₂O₃ ≥ 99%, a Mohs hardness of 9.0, and a melting point of approximately 2250℃. Its particle size is fine and uniform (median particle size approximately 29.2μm), with polygonal angular particles that easily disperse in the matrix and form a dense, wear-resistant skeleton. As a filler added to coatings, plastics, and composite materials, it can significantly improve the surface hardness, scratch resistance, and abrasion life of the coating. It is chemically inert, resistant to acids and alkalis, and resistant to high temperatures, making it suitable for both water-based and oil-based systems. It is widely used in high-performance wear-resistant and anti-corrosion coatings, wear-resistant engineering plastics, and precision wear-resistant composite materials.
Advantage of WFA Powder for wear resistance addtives
- High purity and high hardness: WFA powder contains ≥99% Al₂O₃, with a Mohs hardness of 9, offering excellent wear and scratch resistance, significantly improving the wear and scratch resistance of coatings/composite materials.
- Uniform and fine particle size: WFA F320 ultrafine powder exhibits good dispersibility and dense filling, resulting in a smooth, non-gritty surface that balances high wear resistance with a delicate surface texture.
- Excellent chemical stability: Resistant to acids and alkalis, corrosion, oxidation, and reaction with resins/coatings, it does not chalk or discolor with long-term use.
- Outstanding high-temperature resistance: With a melting point exceeding 2200℃, it maintains hardness and structural stability even under high-temperature conditions, making it suitable for heat-resistant and wear-resistant systems.
- Good reinforcing effect: Angular grains can form a wear-resistant skeleton within the matrix, enhancing overall compressive strength, friction resistance, and erosion resistance.
Typical chemical analysis of WFA F320 mesh for wear resistance additive
| 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 WFA F320 mesh for wear resistance additive
| 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 WFA F320 mesh for wear resistance additive
| D10(um): 19.407 | D50(um): 33.153 | D90(um): 55.974 | D97(um): 69.919 | D(3,2)(um): 30.346 | D(4,3)(um): 35.621 | Span: 1.103 |
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The available sizes of WFA Powder
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 WFA Powder
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.
Production Details of WFA Powder
Product Qualification of White fused corundum FEPA
HAIXU Abrasives is certificated by ISO 9001:2015
Golden supplier of Alibaba for 13 years
Package of WFA Powder
25KGS/PVC Bag
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 difference 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, 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 difference 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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