Made of borosilicate glass, these balls are characterized by their excellent chemical and thermal stability. They are ideal for demanding environments thanks to their resistance to pressure variations and external shocks. Marteau-Lemarie, with its expertise over 40 years, assures you a stock available in France for fast deliveries and personalized advice.
Physical characteristics of borosilicate glass ball
| Ownership | Value | Unit |
|---|---|---|
| Density | 2.23 | g/cm3 |
| Young Module | 64 | GPA |
| Thermal expansion coefficient | 3.3 (T=0-100°C) | × 10−6 /°C |
| Thermal conductivity | 1.15 | W/m·K |
| Volume resistivity | >10^15 | D·m |
| Relative magnetic permeability | <~1 | — |
| Magnetic behaviour | Diamagnetic | — |
| Softening temperature | 821 | ° C |
| Refraction index | 1.471 | — |
Hardness and mechanical strength of borosilicate glass ball
| Ownership | Value | Unit |
|---|---|---|
| Hardness | 420-520 | Knoop |
| Hardness | 6 | Mohs |
| Exercise temperatures | 0/200 | ° C |
| Exercise temperatures | 32/392 | °F |
Available diameters and grades for borosilicate glass ball
| Parameter | Value |
|---|---|
| Minimum diameter | 1 mm — 3/64′′′ |
| Maximum diameter | 100 mm — 4′′ |
| Grades available | G10-25-50-100-200-500-1000-2000 |
Corrosion resistance of borosilicate glass ball
Excellent chemical resistance to water, most acids, saline solutions, organic solvents and halogens. Ideal for resisting in highly oxidizing environments. Moderate resistance to alkaline solutions while not resistant to strong alkaline solutions, hydrofluoric acid and hot concentrated phosphoric acid.
Applications of borosilicate glass ball
Special/safety valves, dosing pumps. Employees in the pharmaceutical and photographic equipment sector.
