6061 Aluminum alloy sandblasting abrasives glass beads
Glass Beads are made of hardened spherical soda lime glass and are a multi-faceted and commonly used media. Cost effective, ideal where metal contamination is not allowed, and often used to peen difficult to reach part areas.
| Designation | US Sieve | Nominal Diameter | Lowest roundness% | |
| Max(um) | Min(um) | |||
| 3 | 20-30 | 850 | 600 | 65 |
| 4 | 30-40 | 600 | 425 | 70 |
| 5 | 40-50 | 425 | 300 | 70 |
| 6 | 50-70 | 300 | 212 | 80 |
| 7 | 60-80 | 250 | 180 | 80 |
| 8 | 70-100 | 212 | 150 | 80 |
| 9 | 80-120 | 180 | 125 | 80 |
| 10 | 100-170 | 150 | 90 | 90 |
| 11 | 120-200 | 125 | 75 | 90 |
| 12 | 140-230 | 106 | 62 | 90 |
| 13 | 170-325 | 90 | 45 | 95 |
| Specifications | ||
| Chemical composition% | SiO2 | >72% |
| CaO | >8% | |
| Na2O | <14% | |
| MgO | >2.5% | |
| Al2O3 | 0.5-2.0% | |
| Fe2O3 | 0.15% | |
| Others | 2.0% | |
| Refractive Index | Nd≥1.5% | |
| Density | 2.4-2.6g/cm3 | |
| Size distribution | Oversize ≤5% under size ≤10% | |
| Wire diameter | 0.03-0.4mm | |
| Durability | 3-5 % | |
| Hardness | 6-7 MOHS ;46HRC | |
| Microhardness | ≥650kg/cm3 | |
| Circularity | Round rate of ≥95% | |
