White Fused Alumina WA
Ø Feature
White fused alumina WA is the finest fine powder particles crushed and sized by advanced fine powder technology using white alumina abrasive as raw material. And the stable particle shape enables sharp particle size distribution.
Ø Physical Properties and Chemical Composition
l Raw Material：high-purity alumina melted in an electric furnace
l Chemical Name：α-alumina (fused alumina)
l Structure：white corundum crystal
l Melting Point：2050°C
l Hardness：Mohs 12
Ø Application
l Materials for precision grinding wheels (bearing stell, etc,) and high-classed polishing grinding wheels
l Materials for polishing cloth and abrasive tape
l High-grade fillers for paints, resins and plywood
l Various lapping materials for metal, glass, crystal, semiconductor crystal, etc.
l Electrical insulation materials, high-grade refractory materials
l Other
Ø Specification
|
Particle |
Specific gravity |
Chemical composition (%) |
|||
|
Al2O3 |
SiO2 |
Fe2O3 |
Na2O |
||
|
#240~#3000 |
≥3.90 |
≥99.0 |
≤0.3 |
≤0.1 |
≤0.5 |
|
#4000 |
≥3.85 |
≥98.0 |
≤0.5 |
≤0.2 |
≤0.7 |
|
#6000 |
≥3.85 |
≥97.0 |
≤1.0 |
≤0.2 |
≤0.7 |
|
#8000 |
≥3.85 |
≥96.0 |
≤1.5 |
≤0.3 |
≤0.7 |
|
Particle |
Particle size distribution (µm) |
|||
|
Maximum size |
D3 |
D50 |
D94 |
|
|
#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 |
≤43 |
20.0±1.5 |
≥13 |
|
#700 |
≤45 |
≤37 |
17.0±1.3 |
≥11 |
|
#800 |
≤38 |
≤31 |
14.0±1.0 |
≥9 |
|
#1000 |
≤32 |
≤27 |
11.5±1.0 |
≥7 |
|
#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 |
|
#2500 |
≤16 |
≤14 |
5.5±0.5 |
≥3 |
|
#3000 |
≤13 |
≤11 |
4.0±0.5 |
≥2 |
|
#4000 |
≤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 |
D75: ≥0.6 |
*The above specifications may be updated, please contact us.
