| |
| Physical Properties | Metric | English | Comments |
|---|
| Density | 2.20 g/cc | 0.0795 lb/in³ |
| |
| Mechanical Properties | Metric | English | Comments |
|---|
| Knoop Microhardness | 522 | 522 |
| Tensile Strength | 54.0 MPa | 7830 psi |
| Modulus of Elasticity | 73.00 GPa | 10590 ksi |
| Modulus of Rupture | 0.0524 GPa | 7.60 ksi |
| Compressive Strength | 1140 MPa | 165000 psi |
| Bulk Modulus | 35.9 GPa | 5210 ksi |
| Poissons Ratio | 0.16 | 0.16 |
| Shear Modulus | 31.0 GPa | 4500 ksi |
| |
| Thermal Properties | Metric | English | Comments |
|---|
CTE, linear  | 0.480 µm/m-°C
@Temperature -100 - 100 °C | 0.267 µin/in-°F
@Temperature -148 - 212 °F |
| | 0.520 µm/m-°C
@Temperature 5.00 - 35.0 °C | 0.289 µin/in-°F
@Temperature 41.0 - 95.0 °F |
| | 0.570 µm/m-°C
@Temperature 0.000 - 200 °C | 0.317 µin/in-°F
@Temperature 32.0 - 392 °F |
| Specific Heat Capacity | 0.770 J/g-°C | 0.184 BTU/lb-°F |
| Thermal Conductivity | 1.38 W/m-K | 9.58 BTU-in/hr-ft²-°F |
| Softening Point | 1630 °C | 2960 °F |
| Annealing Point | 1180 °C | 2160 °F |
| Strain Point | 1070 °C | 1950 °F |
| |
| Optical Properties | Metric | English | Comments |
|---|
| Refractive Index | 1.433027
@Wavelength 2326.050 nm | 1.433027
@Wavelength 2326.050 nm |
| | 1.44078
@Wavelength 1813.570 nm | 1.44078
@Wavelength 1813.570 nm |
| | 1.450304
@Wavelength 1014.26 nm | 1.450304
@Wavelength 1014.26 nm |
| | 1.453731
@Wavelength 780.237 nm | 1.453731
@Wavelength 780.237 nm |
| | 1.456425
@Wavelength 656.454 nm | 1.456425
@Wavelength 656.454 nm |
| | 1.457077
@Wavelength 632.990 nm | 1.457077
@Wavelength 632.990 nm |
| | 1.458522
@Wavelength 587.725 nm | 1.458522
@Wavelength 587.725 nm |
| | 1.463561
@Wavelength 480.126 nm | 1.463561
@Wavelength 480.126 nm |
| | 1.471446
@Wavelength 388.975 nm | 1.471446
@Wavelength 388.975 nm |
| | 1.479824
@Wavelength 334.244 nm | 1.479824
@Wavelength 334.244 nm |
| | 1.491056
@Wavelength 289.444 nm | 1.491056
@Wavelength 289.444 nm |
| | 1.523018
@Wavelength 226.572 nm | 1.523018
@Wavelength 226.572 nm |
| | 1.542731
@Wavelength 206.266 nm | 1.542731
@Wavelength 206.266 nm |
| | 1.575091
@Wavelength 184.950 nm | 1.575091
@Wavelength 184.950 nm |
| Abbe Number | 67.6 | 67.6 |
| | 67.8 | 67.8 |
| Optical Dispersion | 0.006797 | 0.006797 |
| Transmission, Visible | >= 99 %
@Wavelength 375 - 800 nm | >= 99 %
@Wavelength 375 - 800 nm |
| IR Transmittance | 0.00 %
@Wavelength 4300 nm | 0.00 %
@Wavelength 4300 nm |
| | 12 %
@Wavelength 4000 nm | 12 %
@Wavelength 4000 nm |
| | 70 %
@Wavelength 3500 nm | 70 %
@Wavelength 3500 nm |
| | 87 %
@Wavelength 3000 nm | 87 %
@Wavelength 3000 nm |
| | 98 %
@Wavelength 2500 nm | 98 %
@Wavelength 2500 nm |
| | >= 99 %
@Wavelength 1500 nm | >= 99 %
@Wavelength 1500 nm |
| | >= 99 %
@Wavelength 1000 nm | >= 99 %
@Wavelength 1000 nm |
| | >= 99 %
@Wavelength 2000 nm | >= 99 %
@Wavelength 2000 nm |
| |
| Descriptive Properties |
|---|
| Birefringence | < 5 (nm/cm) |
| Homogeneity Grade | AA, A, C, F |
| Inclusion Class | 0, 1, 2 |
| Metallic Impurities | < 100 ppb |
| OH Content | < 1 ppm |
| Optical Stress Coefficient | 35.0 nm/cm MPa |
| Striae Class | 5 |
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