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Synthetic Sapphire
Glass Type: Sapphire
Description
Synthetic Sapphire is an aluminum oxide material grown in a hexagonal crystalline form. It's a very hard material with a high resistance to heat. Because of its crystalline structure, material characteristics can change depending upon the requested orientation. SGP can CNC mill, drill, cut, lap, and polish Sapphire in many sizes, shapes, and surface finishes.
| Thermal Properties |
| Thermal Coefficient of Expansion |
(0/300°C): 45-53 X 10 -7/°C |
| Annealing Point |
N/A |
| Softening Point |
2040°C / 3700 °F |
| Strain Point |
N/A |
| Mechanical Properties |
| Density |
3.97 g/cm3 |
| Knoop Hardness |
1525-2000 Kg/mm2 |
| Young's Modulus |
50-55 X 106 psi / 345 GPa |
| Poisson's Ratio |
.28-.33 |
| Chemical Properties |
| Hydrolytic Resistance |
N/A |
| Acid Resistance |
N/A |
| Alkali Resistance |
N/A |
| Electrical Properties |
| Dielectric Constant |
Avg. 9.3-11.5 |
| Resistivity |
N/A |
| Dielectric Strength |
4.8 X 105 v/cm | |
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