Alumina (aluminum oxide, Al₂O₃) Sphere
Alumina Spheres have excellent mechanical properties and are often used as grinding media in a variety of mills. The spheres have high compressive strength and scuff-resistance. Spheres are offered in a 92% & 99% purity to serve both grinding and packing applications. Aluminum Oxide Spheres are available in typical sizing ranging from 2mm to 25mm.
| Catalog No. | AC3498 |
| Material | Al2O3 |
| Size | 1-70 mm |
| Density | 3.7 kg/dm3 |
Alumina Sphere Specifications
odel | Particle Size φmm | Model | Particle Size φmm | Model | Particle Size φmm |
NA1 | 1.0±0.2 | NA8 | 8.0±0.4 | NA30 | 30.0±0.5 |
NA2 | 2.0±0.3 | NA10 | 10.0±0.4 | NA40 | 40.0±1.0 |
NA3 | 3.0±0.3 | NA13 | 13.0±0.4 | NA45 | 45.0±1.0 |
NA4 | 4.0±0.3 | NA15 | 15.0±0.4 | NA50 | 50.0±1.0 |
NA5 | 5.0±0.3 | NA20 | 20.0±0.5 | NA60 | 60.0±2.0 |
NA6 | 6.0±0.3 | NA25 | 25.0±0.5 | NA70 | 70.0±2.0 |
Alumina Advantages and Applications
| Advantages | Applications |
|---|---|
| High Melting Point | Catalyst Support |
| High Hardness | Grinding Media |
| High Compression Strength | Thermal Insulation |
| Abrasion/Wear-Resistance | Gas Drying |
| Chemical Inertness | Filtration and Purification |
| Resistance to Thermal Shock |
Payment & Order Questions
Most Popular Questions
We offer alumina spheres in a range of sizes, typically from 1 mm to 10 mm in diameter. Custom sizes can also be produced to meet specific application requirements.
Yes, we provide customization options for:
Size and diameter
Pore size and surface area
Chemical composition (e.g., doping with other elements)
Packaging and bulk density
Our alumina spheres are available in purity levels ranging from 99% to 99.9%, depending on the application requirements.
Yes, alumina spheres are highly resistant to thermal degradation and can withstand temperatures up to 1600°C, making them ideal for high-temperature processes.
Our alumina spheres meet industry standards and certifications, including ISO 9001 for quality management. Additional certifications can be provided upon request.
Alumina spheres offer superior:
Thermal and chemical stability
Mechanical strength
Uniformity in shape and size
Cost-effectiveness compared to alternatives like silica or zirconia
Our standard lead time is 2-4 weeks for bulk orders. For custom orders, lead times may vary depending on specifications and quantity.
We offer packaging in:
25 kg bags
Bulk super sacks
Custom packaging to meet your logistics and storage needs
Yes, we provide samples for testing and evaluation. Contact our sales team to request a sample.
Our standard MOQ is 500 kg, but we can accommodate smaller orders for testing or trial purposes.
