Industrial grade WFA (Al₂O₃ ≥99.0%, Na₂O 0.20%–0.40%) is the most common economical grade, widely used in abrasives, refractories, sandblasting and ceramic industry.
| Physical Properties | |
| Hardness: micro | 21600-22600kg/mm3 |
| Hardness: Mohs | 9.0 min |
| Specific Gravity | 3.95-3.97g/cm3 |
| Bulk Density | 1.65-2.05g/cm3 |
| Particle Shape | Blocky, Sharp |
| Color | white |
| Chemical compositions | |
| Al2O3 | 99.3%0min |
| SiO2 | 0.15%max |
| Na2O | 0.28%max |
| Fe2O3 | 0.06%max |
| CaO | 0.03%max |
1. Abrasives & Grinding Tools
- Manufacturing resin grinding wheels, cutting discs, flap discs
- Abrasive belts, sandpaper, mounted points
- Precision grinding for carbon steel, alloy steel, stainless steel, cast iron
- Suitable for dry/wet grinding, surface finishing
2. Sandblasting & Surface Treatment
- Sandblasting cleaning for metal casting, steel structure, mold, ship hull
- Rust removal, oxide layer removal, surface matting and texturing
- Etching for metal and glass surface
- High hardness, no iron contamination, good recycling performance
3. Refractory Materials
- Raw material for high-alumina refractory bricks, castables, ramming mass
- Used in industrial furnace lining, boiler, cement kiln, steel ladle
- Good high temperature resistance, erosion resistance and slag resistance
4. Ceramic & Structural Ceramics
- Raw material for high-grade wear-resistant ceramics, alumina ceramic parts
- Ceramic filter plates, insulating ceramic parts
- Catalyst carrier raw material
5. Wear-Resistant Flooring & Engineering Materials
- Wear-resistant floor aggregate for industrial workshop, warehouse
- Anti-slip and wear-resistant epoxy floor filler
6. Other Industrial Uses
- Polishing powder for metal, glass, hardware
- Filter media, high-temperature filler
- Pipeline wear-resistant lining raw material