|Product Name:||Sapphire Glass||Material:||Artificial Sapphire|
|Use:||Watch Lens，Case||Custom Made:||Can Be Customized|
|Color:||Clear Transparent||Surface Quality:||80/50,60/40,40/20|
sapphire glass watch face,
scratch resistant watch crystal
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.
Clear Transparent Sapphire Glass Watch Face , Heteromorphic Sapphire Coated Glass
|Main Shape||Flat sheet, single cloth, double cloth, single bridge, double bridge and various non-standard shaped glass|
|Main Material||ordinary glass, high-transparent ultra-white imported glass, K1 material glass, pure sapphire glass.|
|AR coating, semi-AR coating can be plated on the glass surface.|
|Light Transmission||More than 98%and the surface strength and hardness can reach more than 8 Mohs hardness.|
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.
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