Sapphire Materials
Sapphire is a single crystal aluminum oxide (Al2O3). It is one of
the hardest materials. Sapphire has good transmission
characteristics over the visible, and near IR spectrum. It exhibits
high mechanical strength, chemical resistance, thermal conductivity
and thermal stability. It is often used as window materials in
specific field such as space technology where scratch or high
temperature resistance is required.
Sapphire glass are ideal for applications where high pressure, high
temperature, high thermal loads, vacuum, scratch resistance,
corrosion resistance, small coefficient of friction as well as
optical and insulating properties are a consideration.
Properties of Single Crystal Sapphire:
| Chemical formula | Al₂O₃ |
| Purity | 99.999% |
| Crystal structure | Hexagonal |
| Density | 3.98g/cm³ |
| Hardness Mohs | 9 |
| Fusion point | 2045℃ |
| Boiling point | 2980℃ |
| Coefficient of Thermal Expansion | 5.8x10 -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) |
Product Paramenters:
| Product Name | T-shape Sapphire Rod |
| Material | Optical Sapphire |
Diameter | 0.1-300mm |
| Tolerance | as request |
| Length | 0.1-300mm |
| Tolerance | as request |
| Surface | Fine Grinding |
| Roughness | 1.0μm |
FAQ
Q:What are your main products?
A:Sapphire optical windows,sapphire lenses,sapphire
rod/pin,sapphire tube,
Q:How long is your delivery time?
A:In general delivery time is about 25 days for custom produced
optics,except stock ones or some special optics.
Q:Do you provide free samples?
A:We can provide free samples if we have stock optics as your
request,but the freight is yours.
Q:What is your MOQ?
A:MOQ is 10pcs
Q:What is your terms of payment?
A:T/T, Western Union ,Paypal
