5 Inch  Sapphire Substrate 

5 inch Dimensions
Material: Al2O3 single crystal 99.999%
Diameter:125.00±0.1mm
Thickness:1000±25um
42.52.5mm OF primary flat Flat orientation: C0.1°C-plane (0001)
R0.1°Or A-plane, M-plane orientation
Roughness of the frontside surface:Ra0.3nm
Roughness of the backside surface: 0.81.2um, or double side polished
TTV:＜20um
BOW:-25~0um
WARP:＜30um
Laser Mark Series No. by requirements
Containers vacuum-sealed with nitrogen backfill in a class 100 environment
Clearance of visible contaminants

Step for producing sapphire wafers

Body made of sapphire crystal—->

obtain rough ingot in specified axis—->

remove the tail and top——>

form of repair diameter——> Surface grinding—>(anneal —>)wire cutting—> chamfer—> anneal—-> lapped—-polished—- infection

Synthetic sapphire, often known as sapphire glass, is a popular window material because it is both very transparent to light wavelengths ranging from 150 nm (UV) to 5500 nm (IR) (the visible spectrum is from 380 nm to 750 nm) and extremely scratch-resistant.

The following are the primary advantages of sapphire windows:

Very broad optical transmission band (0.15-5.5 m) from UV to near-infrared.
Significantly stronger than standard glass windows or other optical materials
Highly scratch and abrasion resistant
Extremely high melting point (2030 °C)

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