Our glass bead raw materials are made from the new glass include new float glass, door and window glass, flat glass, it has the advantage of no overweight heavy metal, and roundness rate can be more than eighty-five percent.
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% |