White Aluminum Oxide Micropowder
Product Introduction
White aluminum oxide micropowder is a high-purity abrasive and filler material made from high-quality alumina through high-temperature fusion, crushing, shaping, and precise grinding. It appears white or off-white, with high hardness, good wear resistance, stable chemical properties, and excellent dispersibility.
| Typical Chemical composition | |
| AL2O3 | 99.3%min |
| SiO2 | 0.06% |
| Na2O | 0.3%max |
| Fe2O3 | 0.05%max |
| CaO | 0.04%max |
| MgO | 0.01%max |
| K2O | 0.02#max |
| Typical physical properties | |
| Hardness: | Mohs:9.0 |
| Maximum service temperature: | 1900 ℃ |
| Melting Point: | 2250 ℃ |
| Specific Gravity: | 3.95g/cm3 |
| Volume density | 3.6g/cm3 |
| Bulk density(LPD): | 1.75-1.95 g/cm3 |
| Color: | White |
| Particle shape: | Angular |
| Available size: | |
| FEPA | F230 F240 F280 F320 F360 F400 F500 F600 F800 F1000 F1200 F1500 |
| JIS | 240# 280# 320# 360# 400# 500# 600# 700# 800# 1000# 1200# 1500# 2000# 2500# 3000# 4000# 6000# 8000# 10000# |
Typical Specifications
- Chemical Composition: Al₂O₃ ≥ 99.0%
- Hardness: Mohs 9.0
- Color: White
- Particle Size: Commonly available in W5, W7, W10, W14, W20, W28, etc.
- Shape: Angular / sub-angular particles
Main Applications
- Used as functional filler in epoxy flooring, polyurethane coatings, wear-resistant floor paints
- Fine polishing and lapping for metals, ceramics, glass, and semiconductor materials
- Additive for high-temperature ceramics, refractory materials, and anti-corrosion coatings
- Sandblasting and surface treatment for precision parts
Key Advantages
- High hardness and excellent wear resistance
- Neutral pH, no reaction with resins or solvents
- White color, does not affect color matching of coatings
- Low impurity content, stable performance
- Good compatibility with epoxy, polyurethane and other binders
