Product : GLASS BEADS : Specification
Chemical Analysis : Glass beads made of soda lime glass; CAS-Nr. 65997-17-3 / EINECS 266-046-0
Chemicale |
Sio2 |
Al2O3 |
Na2O |
MgO |
CaO |
K2O |
% by weight |
70 - 73 % |
1 - 2 % |
10 - 15 % |
1.0 - 4.5 % |
7 - 13 % |
0.1 - 1.5 % |
The heavy metal content of the Glass beads are within the permitted limits of EN71 Part 3, RoHS
SPECIFIC GRAVITY |
2.5 |
ACID RESISTANCE |
0.07 (wt%) |
REFRACTIVE INDEX (nD) |
1.52 |
ALKALI RESISTANCE |
2.88 (wt%) |
THERMAL EXPANSION |
WATER RESISTANCE |
0.12 (wt%) |
|
COEFFICIENT |
9.2 x 10-6 ºC-1 |
HARDNESS (VICKERS) |
520 (kgf/mm2) |
SPECIFIC HEAT |
0.2-0.3 (kcal/kgºC) |
HARDNESS (MOHS) |
≥6 |
SOFTENING POINT |
730 ºC |
ABRASION INDEX |
4 - 5% |
CHEMICAL DURABILITY |
0.12 (wt%) |
COMPRESSIVE STRENGTH |
18 - 30 (kgf/mm3) |