|Product Name:||Sapphire Glass||Use:||Watch Lens，Case|
|Custom Made:||Can Be Customized||Color:||Clear Transparent|
|Materia:||Artificial Sapphire||Coating:||Anti-Reflective (AR) Coatings|
synthetic sapphire glass,
scratch resistant watch crystal
Custom Made Optical Flat Watch Glass With Artificial Sapphire 85% - 95% Transmissivity
The spec. we can offer sapphire window according to customer requirement as below:
|Sapphire Glass for watches||2.00mm~250mm||+/-0.01mm||0.10mm~150.00mm||+/-0.01mm|
Please try to offer more details as below when you place an order:
1. Buyer offers an original sample or related mounting parts and special request for attention or change.
2. If you are unable to provide samples, please provide drawings or try to provide more details.
We can provide flat/single domed/double domed and other shape watch glass,Welcome to email us.
About sapphire glass
SAPPHIRE CRYSTAL (sapphire glass) generally refers to synthetic sapphire, generally used in the manufacture of the watch glass.
It is resistant to wear with tungsten titanium alloys and high-tech ceramics. but sapphire materials can wear resistance and
withstand the strong impact, and some of the same or higher hardness of the material (e.g., millstone, sandpaper, nail, granite,
concrete wall, and floor, etc.) so sapphire glass are not likely to scratch the surface of these materials.
Synthetic Sapphire Window Technique Index :
|Edge Finish||Ground and beveled|
|Surface Quality||40-20 scratch-dig|
|Surface Flatness||λ/4 @ 633 nm|
|Parallelism||≤3 arc min (≤0.9 mrad)|
|Clear Aperture||>80% of central diameter|
|Hardness (Knoop)||1370 kg mm-2|
|Young's modulus||3.4 x 1011 N m-2|
|Thermal Limit||22 W m-1 K-1|
|Thermal expansion coefficient||8.4 x 10-6 K-1