| technical requirement | Commercial Grade | Precision Grade | High Precision Level |
| Size range | 1-600mm | 2-600mm | 2-600mm |
| Diameter tolerance | 土0.1mm | 土0.025mm | 土0.01mm |
| Thickness tolerance | 土0.1mm | 土0.025mm | 土0.01mm |
| Parallel deviation | ±3´ | ±15´´ | ±2´´ |
| surface quality | 60-40 | 40-20 | 10月20日 |
| Surface accuracy | 1.0λ | λ/10 | λ/20 |
| Coating | 10.6μm AR/AR, <2% per Surface | ||
| Inverted edge | 0.1-0.5mm*45° | ||
| Material Science | ZnSe | ||
| Diameter (mm) | Thickness (mm) | Coating requirements |
| 10 | 1 | AR/AR 7-12μm 10.6μm 2-13μm |
| 12.5 | 1 | |
| 20 | 2 | |
| 25 | 3 | |
| 30 | 3 | |
| 38.1 | 3 | |
| 40 | 4 | |
| 50 | 3 | |
| 50.8 | 3 | |
| 63.5 | 5 | |
| 75 | 3 | |
| 75 | 5 | |
| 76.2 | 6 | |
| 80 | 8 | |
| 90 | 10 | |
| 100 | 10 | |
| 150 | 15 | |
| 180 | 18 | |
| 200 | 20 | |
| 300 | 35 |
| Transmission wavelength range | 0.5μm-22μm |
| Crystal structure | Cubic |
| Density (g cm- 3@298k ) | 5.27 |
| Resistivity (Ω cm) | ~1012 |
| Melting point (℃) | 1525 |
| Chemical purity (%) | 99.9996 |
| Coefficient of thermal expansion (1/k) | 7.1*10-6@273k |
| 7.8*10-6@373k | |
| 8.3*10-8 @473k | |
| Thermal conductivity (J/k .m. s) | 18.0 @ 298k |
| Heat capacity (J/g .k) | 0.339 @298k |
| Knoop hardness (kg/mm2) | 110 |
| Bending strength (Mpa) | 55 |
| Young's modulus (Gpa) | 67.2 |
| Poisson's ratio | 0.28 |
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