|Type:||Watches For Parts||Material:||Sapphire|
|Shape:||Custom Shape||Surface Treatment:||Polished|
|Service:||OEM ODM||Surface Quality:||80/50,60/40,40/20|
|Usage:||Sapphire Glass For Watch||Coating:||AR,AF-Coating|
sapphire glass watch face,
synthetic sapphire glass
AR / AF Coating Polished Flat Watch Glass Watches For Parts Type 0.5-50 mm Thickness
Ground and beveled
λ/4 @ 633 nm
≤3 arc min (≤0.9 mrad)
>80% of central diameter
1370 kg mm-2
3.4 x 1011 N m-2
22 W m-1 K-1
Thermal expansion coefficient
8.4 x 10-6 K-1
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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.