Products
Core materials are organized for procurement, engineering and factory teams who need technical clarity before sending an inquiry.
Product Definition & Characteristics
A concise overview of WFA value from raw material, smelting process, crystal behavior and application performance.
White fused alumina, internationally known as WFA, is a white artificial abrasive made from high-quality industrial alumina powder through high-temperature electric arc furnace smelting, cooling, crushing, shaping, magnetic separation and screening.
Al2O3 content is typically above 99%, supporting chemical stability and reducing contamination risk during precision processing.
Mohs hardness reaches around 9.0, giving strong cutting ability and excellent wear resistance for abrasive tools and surface finishing.
Angular crystals fracture during use to expose new cutting edges, helping maintain efficient grinding performance.
Stable performance in acidic, alkaline and demanding processing environments makes WFA suitable for advanced industrial applications.
A high melting point of about 2250 C makes WFA an important raw material for advanced refractory systems.
White Fused Alumina Series
White fused alumina can be supplied as F grit, P grit, micro powder and section sand. Customized particle sizes can be discussed according to specific production requirements.
Bonded abrasives including vitrified grinding wheels and resin cutting discs.
Coated abrasives including sandpaper, sanding cloth and sanding belts.
Precision lapping, polishing, optical glass and high-end surface finishing.
Refractory castables, sandblasting and general industrial material systems.
High purity fused alumina for coated abrasives, bonded abrasives, blasting, precision lapping and refractory applications.
| Al2O3 | >= 99.4% |
| Na2O | <= 0.28% |
| Fe2O3 | <= 0.03% |
| SiO2 | <= 0.05% |
| True Density | 3.95-4.10 g/cm3 |
| Mohs Hardness | 9.0 |
| Melting Point | ~2250 C |
| Fire Resistance | <= 1850 C |
| Standard | GB/T 2479-2022 |
Stable fused mullite material for high temperature refractory systems and kiln furniture applications.
| Al2O3 | 74-79% |
| Fe2O3 | <= 0.1% |
| SiO2 | <= 0.20% |
| Key Features | Low creep rate, high refractoriness |
| Granules | 5-8 / 3-5 / 1-3 / 0-1 mm |
| Powder | 200#-0 / 320#-0 |
| Customization | Available |
Lightweight high alumina insulating aggregate for ultra high temperature refractory insulation.
| Al2O3 | >= 99% |
| Na2O | <= 0.3% |
| Fe2O3 | <= 0.1% |
| SiO2 | <= 0.3% |
| True Density | 1.0-1.8 g/cm3 |
| Working Temperature | Up to 1600 C |
| Granularity | 0.2-1 / 1-2 / 2-3 / 3-5 mm |
| Form | Hollow sphere aggregate |
| Color | White |
Technical Advantage
These technical advantages help procurement and engineering teams evaluate WFA value in precision processing and high-temperature material systems.
Al2O3 content is typically above 99.4%, helping reduce contamination risk in precision grinding and refractory use.
Mohs hardness around 9.0 gives strong cutting ability, wear resistance and stable abrasive performance.
Angular crystals fracture during use to expose new cutting edges and maintain efficient grinding.
High melting point and stable alpha-Al2O3 phase make WFA suitable for advanced refractory systems.