Advantages of sapphire:
Sapphire is one of the hardest materials, which is virtually scratch proof. It helps to maintain its integrity in demanding physical environments. It has a melting point of over 2000 °C, making it ideal for high-temperature applications. Besides, sapphire can transmit ultraviolet, visible and infrared light was well as microwaves, a range broader than most materials.
Its unique properties make it a most suitable solution for a variety of applications ranging from optical windows for military sensor systems to tubes, rods, and viewports for industrial and semiconductor markets.
Properties of Single Crystal Sapphire
| Chemical formula | Al₂O₃ |
| Purity | 99.999% |
| Crystal structure | Hexagonal |
| Hardness Mohs | 9 |
| Fusion point | 2045℃ |
| Boiling point | 2980℃ |
| Coefficient of Thermal Expansion | 5.8×10 -6 /K |
| Specific heat | 0.418W.s/g/k |
| Thermal conduction | 25.12W/m/k(@100°C) |
| Refractive index | no=1.768 ne=1.760 |
| dn/dt | 13×10-6/K(@633nm) |
| Transmission | T≈80%(0.3-5μm) |
| Permittivity | 11.5(//c), 9.3(⊥c) |
Sapphire Optical glass blanks
Jingjing Technology (Hubei) Co., Ltd can supply high quality fine grinding sapphire optical glass blanks.
We can cut the material into the shape as requirements, such as square shape, round shape, spherical shape and so on.
If have any query, please contact with us.