Premium High Al₂O₃ Alumina Pebbles Ceramic Balls For Precision Grinding ODM
Our premium Al₂O₃ ceramic balls deliver exceptional grinding performance with outstanding hardness, wear resistance, and thermal stability. Engineered for precision applications across multiple industries, these alumina pebbles offer significant advantages over traditional grinding media.
- High Corrosion Resistance: Superior resistance to chemicals and acids
- Dimensional Stability: Maintains shape and size at temperatures up to 3180°F
- Exceptional Abrasion Resistance: Hardness of 9 Mohs for extended service life
- Electrical Insulation: Non-porous, durable insulating properties
- Lightweight: 50% lighter than steel with greater hardness
| Composition | Al₂O₃ | SiO₂ | CaO+MgO | Fe₂O₃ |
|---|---|---|---|---|
| Wt% | ≥92 | 7 max | ≤2 | ＜0.1 |
| Specific Gravity (g/cm³) | Bulk Density (kg/L) | Hardness (Moh's) | Water Absorption (%) | Self Wearing Loss % (24hrs) | Compression (MPa) |
|---|---|---|---|---|---|
| ≥3.65 | ≥2.2 | 9 | ＜0.01 | ≤0.012 | ≥2000 |
| 0.5-1.0 | 6.0 | 20.0 | 70.0 |
| 1.0 | 8.0 | 25.0 | 80.0 |
| 2.0 | 10.0 | 30.0 | 90.0 |
| 3.0 | 13.0 | 40.0 | 100.0 |
| 4.0 | 15.0 | 50.0 | |
| 5.0 | 18.0 | 60.0 |
| Property | Alumina (92%) | Alumina (99%) | Zirconia | Steel | Silica Sand |
|---|---|---|---|---|---|
| Density (g/cm³) | 3.6 | 3.9 | 6.0 | 7.8 | 2.2 |
| Hardness (Mohs/HV) | 9 (~1,500 HV) | 9 (~1,800 HV) | 8.5 | 6-7 | 7 |
| Wear Rate (g/ton) | 10-50 | 5-20 | 1-5 | 100+ | 300+ |
| Compressive Strength | 2,000 MPa | 2,500 MPa | 2,200 MPa | 500 MPa | Low |
- Chemical Processing: Corrosion-resistant performance in pumps and valves
- Petroleum Manufacturing: Resists oxidation in water and salt solutions
- Pharmaceutical: FDA-compliant, no endotoxin release
- Battery Production: Prevents metal contamination in cathode materials
- Paint & Coatings: Maintains color purity with no metal leaching
Standard packaging: 25KG woven bags, 1000KG-1250KG per pallet with shrink wrap
- Store in dry, clean environment to prevent contamination
- Avoid sudden thermal shocks exceeding 200°C/min
- Do not exceed recommended load capacity
- Inspect regularly for wear or surface damage
- Not suitable for high-impact applications
They are made from aluminium oxide (Al₂O₃), a high-purity ceramic material known for its hardness and wear resistance.
High hardness, excellent wear resistance, chemical stability, high-temperature resistance (up to 1600°C), and electrical insulation.
They offer superior wear resistance, chemical stability, and are lighter than steel, making them ideal for specific applications requiring precision and durability.
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