- The beads is transparant clean colorless glass smooth spherically shaped,free from milkiness,pits,or excessive air bubbles and conform to the following specific requirements.
- Material of bead s is clear and colorless commercial grade soda lime glass cullet that has been cleaned to remove any opaque particulate and other matter that may interfere with the reflective properties of the bead.
Item | Value |
SiO2 | ≥65% |
Na2O | ≤14% |
CaO | ≤8.0% |
MgO | ≤2.5% |
Al2O3 | 0.5-2.0% |
Fe2O3 | ≥0.15% |
Other | 2.0% |
Bulk density | 1.5g/cm3 |
Real Density | 2.5g/cm3 |
Mohs Hardness | 6-7 |
HRC hardness | 46 |
Roundness | ≥85% |