| Certification: | CE, ISO, BV |
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| Application: | Rubber, Plastic, Chemical, Construction, Metallurgy, Ceramic, Casting, Glass, Astronomy, Medicine, Biology, Communication, Milit |
| Type: | Schott Optical Substrate |
| Substrate: | Schott Sapphire |
| Uniaxial Negative: | Uniaxial Negative;No = 1.768 Ne = 1.760 |
| DN/Dt (0.6um): | 13*10(-6)/Celsuis Degree (Visible Range) |
| Samples: |
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| Customization: |
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Audited Supplier | Items | Value |
| Thermal conductivity (60° to c-axis) at 25 °C | 27.21 W/ (m x K) |
| Linear thermal expansion coefficient (60° to c-axis) α(25 °C; 800 °C) | 8.4 10- 6 / K |
| Specific heat at 25 °C | 774.4 J / kg x K |
| Heat capacity at 25 °C | 77.87 J / K x mol |
| Items | Value | Value |
| Tensile strength | 40,000 - 60,000 psi (design criterion) | 0.27 - 0.41 GPa |
| Flexural strength | 70,000 -130,000 psi (design criterion) | 0.48 - 0.89 GPa |
| Young's Modulus, E (25 °C) (Modulus of Elasticity) |
50 x 106 psi | 345 GPa |
| Compressive Modulus, K | 55 x 106 psi | 379 GPa |
| Flexural Modulus (Modulus of Rupture) | 52 x 106 psi | 358 GPa |
| Shear Modulus, G (Modulus of Rigidity) | 21.5 x 106 psi | 148 GPa |
| Bulk Modulus, k (Volumetric Modulus of Elasticity) Poisson's Ratio | 35 x 106 psi 0.29 |
241 GPa |
| Items | Value |
| Uniaxial Negative | no = 1.768 ne = 1.760 |
| Birefringence | 0.008 |
| dn/dt (0.6 µm) | 13 x 10-6/°C (visible range) |
| Spectral Emittance | 0.1 (1600 °C) |
| Spectral Absorption Coefficient | 0.1 to 0.2 cm-1 (0.66 micron, 1600 °C) |
| Electrical Volume Resistivity | 1016 Ohm x cm (25 °C) 1011 Ohm x cm (500 °C) 106 Ohm x cm (1000 °C) |
| Dielectric Strength | 480,000 volts/cm (1,200 volts/mil) |
| Dielectric Constant | 11.5 (103 to 109 Hz, 25 °C) parallel to c-axis 9.3 (103 to 109 Hz, 25 °C) perpendicular to c-axis |
| Loss Tangent | 8.6 x 10-5 (@1010 Hz, 25 °C) parallel to c-axis 3.0 x 10-5 (@1010 Hz, 25 °C) perpendicular to c-axis |
| Magnetic Susceptibility | - 0.21 x 10-6 parallel to c-axis - 0.25 x 10-6 perpendicular to c-axis |
| Applying Fields: | 1).Infrared applications (e. g. radiometry, guidance, gas analysis, medicine, safety and security) 2).High-pressure and shock-loading applications(e. g. chamber or heater windows in chemical process equipment) 3).Optical applications (e. g. optical components from UV to IR) 4).Scratchproof sapphire watch glasses |
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