What is White Fused Alumina powder?
White fused alumina powder (WFA powder) is a high-purity abrasive material made from calcined alumina (Al₂O₃), melted in an electric arc furnace and finely ground into micron-sized particles. Featuring over 98% aluminum oxide content, it offers exceptional hardness, thermal stability, and chemical inertness.
XINLI supplies premium-grade white fused alumina powder designed for high-precision applications such as fine polishing, lapping, and micro-grinding. Manufactured from high-purity aluminum oxide and processed through advanced milling and classification technology, our WFA powder features tight particle size distribution, high hardness, and excellent thermal stability. It is ideal for use in semiconductors, ceramics, optical components, and high-end surface finishing. With customizable grain sizes ranging from F230 to #20000, XINLI ensures consistent quality for both wet and dry processes. Whether you need abrasives for precision polishing or advanced material processing, our white corundum powder delivers exceptional performance with low impurities and strong cutting power.
Main Colors
- White
Factory Price
USD $0.93-3.75 / kg EXW
Packaging
25 kg bags or customized packaging on request
White Fused Alumina powder Physical Properties
| Item | Value |
|---|---|
| True Density | 3.90g/cm3 |
| Mohs Hardness | 9.0 |
| Melting Point | 2250°C |
| Al2O3 CAS No. | 1344-28-1 |
| HS Code | 2818109000 |
White Fused Alumina powder Chemical Composition(%)
| Model | Particle Size | Al2O3 | Na2O |
|---|---|---|---|
| WFA | F230-F800 (#240-#1500) |
≥98.50 | ≤0.50 |
| F1000-F1200 (#2000-#2500) |
≥98.30 | ≤0.60 | |
| #3000-#8000 | ≥97.60 | ≤0.80 | |
| #10000-#20000 | ≥97.40 | ≤0.90 |
White Fused Alumina powder Particle Distribution(μm)
| Particle Size | D0 | D3 | D50 | D94 |
|---|---|---|---|---|
| #240 | ≤127 | ≤103 | 58.6±3.0 | ≥40.0 |
| #280 | ≤112 | ≤87.0 | 49.4±3.0 | ≥33.0 |
| #320 | ≤98.0 | ≤74.0 | 41.1±2.5 | ≥27.0 |
| #360 | ≤86.0 | ≤66.0 | 36.1±2.0 | ≥23.0 |
| #400 | ≤75.0 | ≤58.0 | 30.9±2.0 | ≥20.0 |
| #500 | ≤63.0 | ≤50.0 | 26.4±2.0 | ≥16.0 |
| #600 | ≤53.0 | ≤43.0 | 21.1±1.5 | ≥13.0 |
| #700 | ≤45.0 | ≤37.0 | 17.9±1.3 | ≥11.0 |
| #800 | ≤38.0 | ≤31.0 | 14.7±1.0 | ≥9.00 |
| #1000 | ≤32.0 | ≤27.0 | 11.9±1.0 | ≥7.00 |
| #1200 | ≤27.0 | ≤23.0 | 9.90±0.80 | ≥5.50 |
| #1500 | ≤23.0 | ≤20.0 | 8.40±0.60 | ≥4.50 |
| #2000 | ≤19.0 | ≤17.0 | 6.90±0.60 | ≥4.00 |
| #2500 | ≤16.0 | ≤14.0 | 5.60±0.50 | ≥3.00 |
| #3000 | ≤13.0 | ≤11.0 | 4.00±0.50 | ≥2.00 |
| #4000 | ≤11.0 | ≤8.00 | 3.00±0.40 | ≥1.30 |
| #6000 | ≤8.00 | ≤5.00 | 2.00±0.40 | ≥0.80 |
| #8000 | ≤6.00 | ≤3.50 | 1.20±0.30 | ≥0.60 |
| #10000 | — | — | 0.50–0.70 | — |
| #20000 | — | — | 0.40–0.50 | — |
White Fused Alumina powder Advantages
- Does not affect the color of the workpiece
- It can be used for sandblasting in the process where iron powder residue is strictly prohibited
- Shaping grade particles are ideal for wet blasting and polishing abrasives
- High Al2O3 purity with low Na2O and low SiO2
White Fused Alumina powder Applications
- Sandblasting, polishing and grinding of metal and glass.
- Filling of the paint, wear-resistant coating, ceramic and glaze.
- Making oil stone, grinding stone, grinding wheel, sandpaper and emery cloth.
- Production of ceramic filter membranes, ceramic tubes, ceramic plates.
- Production of polishing solid wax and liquid wax.
- For the use of wear-resistant floor.
- Advanced grinding and polishing of piezoelectric crystals, semiconductors, stainless steel, aluminum and other metals and non-metals.
