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Mateck Sapphire (Al2O3)
| Category | Ceramic , Oxide , Aluminum Oxide |
| Manufacturer | Mateck GmbH |
| Trade Name | |
| Port | Shanghai port,China |
| Trade Terms | FOB, CFR, CIF |
| Payment Terms | L/C, T/T, Western Union |
| Download PDF | Mateck Sapphire (Al2O3).pdf  |
| Price | EMAIL US sales@lookpolymers.com |
Material Notes:
Optical crystals
| Physical Properties | Metric | English | Comments |
|---|---|---|---|
| Density | 3.98 g/cc | 0.144 lb/in³ | |
| a Lattice Constant | 4.758 Å | 4.758 Å | |
| c Lattice Constant | 12.991 Å | 12.991 Å | |
| Molecular Weight | 101.96 g/mol | 101.96 g/mol |
| Mechanical Properties | Metric | English | Comments |
|---|---|---|---|
| Vickers Microhardness | 1940 | 1940 | MPa |
| 2200 | 2200 | MPa | |
| Hardness, Mohs | 9.0 | 9.0 | |
| Modulus of Elasticity | 426.4 GPa | 61850 ksi | parallel to c-axis |
| 462.6 GPa | 67100 ksi | perpendicular to c-axis | |
| Poissons Ratio | 0.309 | 0.309 | |
| Shear Modulus | 144.3 GPa | 20930 ksi | perpendicular to c-axis |
| 162.9 GPa | 23630 ksi | parallel to c-axis |
| Thermal Properties | Metric | English | Comments |
|---|---|---|---|
| CTE, linear | 3.24 - 5.66 µm/m-°C @Temperature -60.0 - 60.0 °C |
1.80 - 3.14 µin/in-°F @Temperature -76.0 - 140 °F |
perpendicular to c-axis |
| Specific Heat Capacity | 0.761 J/g-°C | 0.182 BTU/lb-°F | |
| Thermal Conductivity | 23.1 W/m-K @Temperature 46.0 °C |
160 BTU-in/hr-ft²-°F @Temperature 115 °F |
parallel to c-axis |
| 25.2 W/m-K @Temperature 46.0 °C |
175 BTU-in/hr-ft²-°F @Temperature 115 °F |
perpendicular to c-axis | |
| Melting Point | 2030 °C | 3690 °F |
| Optical Properties | Metric | English | Comments |
|---|---|---|---|
| Refractive Index | 1.7771 | 1.7771 | at ne |
| 1.6679 @Wavelength 4000 nm |
1.6679 @Wavelength 4000 nm |
||
| 1.6748 @Wavelength 4000 nm |
1.6748 @Wavelength 4000 nm |
||
| 1.692 @Wavelength 3000 nm |
1.692 @Wavelength 3000 nm |
||
| 1.7015 @Wavelength 3000 nm |
1.7015 @Wavelength 3000 nm |
||
| 1.746 @Wavelength 1000 nm |
1.746 @Wavelength 1000 nm |
||
| 1.7545 @Wavelength 1000 nm |
1.7545 @Wavelength 1000 nm |
||
| Transmission, Visible | 97 % @Wavelength 500 nm |
97 % @Wavelength 500 nm |
Internal Transmittance |
| IR Transmittance | 45 % @Wavelength 5000 nm |
45 % @Wavelength 5000 nm |
Internal Transmittance |
| 97 % @Wavelength 1000 nm |
97 % @Wavelength 1000 nm |
Internal Transmittance | |
| 97 % @Wavelength 3000 nm |
97 % @Wavelength 3000 nm |
Internal Transmittance | |
| UV Transmittance | 79 % @Wavelength 200 nm |
79 % @Wavelength 200 nm |
Internal Transmittance |
| Descriptive Properties | Value | Comments |
|---|---|---|
| Cleavability | (1011) | imperfect |
| (1120) | ||
| Constants of Elastic Compliance (Pa^-1) | 2.2E-12 | S33 |
| 2.3E-12 | S11 | |
| 4E-13 | S13 | |
| 5E-13 | S14 | |
| -6.8E-12 | S44 | |
| -7E-13 | S12 | |
| Symmetry Class | 3m | |
| Syngony | tetragon | |
| Thermal Coefficient of Refractive Index | 8.8E-6 to 1.28E-5 | ß0 at 3.39 microns for ±60°C |
| 9.9E-6 to 1.39E-5 | ße at 3.39 microns for ±60°C | |
| Thermal Stability, °C | 162±8 | |
| Transmission Range (microns) | 0.17 - 5 |
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