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Reflectors, window mirrors, lenses for industrial laser/medical and other industries
Metal impurity content<50ppb, with high transmittance in the 355nm, 532nm, 1064nm and other frequency bands
Metal impurity content(Unit: ppm)
| Metal impurity content | Li | Na | K | Mg | Ca | Cu | Al | Cr | Fe | Ti | OH |
| YS-330 | ≤0.001 | ≤0.005 | ≤0.005 | ≤0.005 | ≤0.005 | ≤0.001 | ≤0.005 | ≤0.001 | ≤0.001 | ≤0.008 | <250 |
Product Features
| Model | Optical uniformity (ppm) | Stress birefringence (nm/cm) | Bubble | Stripe level | Fluorescence |
| YS-330 | NS | ≤5 | 0 | 5 | nothing |
Heat absorption coefficient
| Model | Heat absorption coefficient @ 1064nm (ppm/cm) |
| YS-330 | <3 |
Mechanical performance
| Parameter | Company | Test result |
Density | g/cm3 | 2.20 |
| Mohs hardness | - | 7 |
| Young's modulus | GPa | 74.20 |
| Shear modulus | GPa | 31.22 |
| Poisson's ratio | - | 0.17 |
| Compressive strength | GPa | 1.13 |
| Tensile strength | MPa | 49 |
| Bending strength | MPa | 94.3 |
Electrical performance
Parameter | Company | Test result |
| Dielectric constant (20 ° C, 500MHz) | - | 3.90 |
| Electrical resistivity (20 ° C) | Ω·cm | 0.1*1018 |
| Dielectric loss angle (tan δ, 500MHz) | - | <0.001 |
| Resistance | Ω | 8.0*1015 |
Thermal Properties
Parameters | Company | Test result |
Strain point (η=1014.5dPa·s) | °C | 1000 |
| Annealing point (η=1013dPa·s) | °C | 1160 |
| Softening point (η=107.6dPa·s) | °C | 1620 |
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