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B270 Superwite®
Glass Type: Soda Lime
Description
B270 is manufactured by Schott Glass. It's a crown or soda lime type glass which is fabricated in a drawn process. B270 is extremely clear and colorless, and has good transmission value into the infrared range. SGP can CNC mill, cut, drill, lap, and polish this material in many shapes, sizes, and surface finishes.
| Thermal Properties |
| Thermal Coefficient of Expansion |
(0/300°C): 95 X 10 -7/°C |
| Annealing Point |
541°C / 1006 °F |
| Softening Point |
724°C / 1335 °F |
| Strain Point |
511°C / 952 °F |
| Mechanical Properties |
| Density |
2.55 g/cm3 |
| Knoop Hardness |
542 |
| Young's Modulus |
E=71.5 kN/mm2 |
| Poisson's Ratio |
.219 |
| Chemical Properties |
| Hydrolytic Resistance |
class 3 |
| Acid Resistance |
class 2 |
| Alkali Resistance |
class 2 |
| Electrical Properties |
| Dielectric Constant |
E=7 |
| Resistivity |
N/A |
| Dielectric Strength |
N/A | |
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