mainly for general grinding purpose, economic choice as compared with ZrO2 beads
| Product: | Alumina / aluminium oxide (Al2O3) grinding beads / balls |
| Material: | Al2O3 (99.5%) |
| Density: | 3.89 g/cm3 |
| Diameters: | 0.4 - 14 mm |
| Grade: | G5 - G500 |
| Flexural Strength: | 379 MPa |
| Elastic Modulus: | 375 GPa |
| Shear Modulus: | 152 GPa |
| Bulk Modulus: | 228 GPa |
| Polsson's Ratio: | 0.22 |
| Compressive Strength: | 2600 MPa |
| Hardness: | 1400 kg/mm2 |
| Fracture Toughness KIC: | 4 MPa.m1/2 |
| Maximum Temperature: | 1750 oC |
| Thermal Coefficient: | 35 W/(m.k) |
| Coefficient of Thermal Expansion: | 8.4 x 10-6/oC |
| Specific Heat: | 880 J/kg.oC |
| Dielectric Strength: | 16.9 ac-kv/mm |
| Dielectric Constant: | 9.8 f/m |
| Electrical Resistivity: | >1014 ohm.m |
| Applications: | Ball milling |
| Comments: | Quenching resistant, excellent insulating behaviour, long-lasting. |
