Place of Origin | Guangdong, China | Brand Name | KP |
Material | Other, Sapphire | Usage | Optical |
Structure | Plano | Shape | round |
Name | crystal watch glass replacement | Thickness | 0.5-50mm |
Size tolerance | +0.0/-0.25 | Edge Finish | Ground and beveled |
Surface Quality | 40-20 scratch-dig | Parallelism | u22643 arc min (u22640.9 mrad) |
Clear Aperture | >80% of central diameter | Hardness (Knoop) | 1370 kg mm-2 |
Youngs modulus | 3.4 x 1011 N m-2 | Thermal Limit | 22 W m-1 K-1 |