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Physical Properties | Metric | English | Comments |
---|
Density | 3.53 g/cc | 0.128 lb/in³ |
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Chemical Properties | Metric | English | Comments |
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Acid Class, SR | 1.0 | 1.0 |
Alkali Class, AR | 1.0 | 1.0 |
Stain Resistance Class, FR | 0.00 | 0.00 |
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Mechanical Properties | Metric | English | Comments |
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Hardness, Knoop | 520 | 520 |
Modulus of Elasticity | 96.0 GPa | 13900 ksi |
Poissons Ratio | 0.26 | 0.26 |
Shear Modulus | 38.1 GPa | 5530 ksi |
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Thermal Properties | Metric | English | Comments |
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CTE, linear | 8.50 µm/m-°C @Temperature -30.0 - 70.0 °C | 4.72 µin/in-°F @Temperature -22.0 - 158 °F |
| 9.90 µm/m-°C @Temperature 20.0 - 300 °C | 5.50 µin/in-°F @Temperature 68.0 - 572 °F |
Specific Heat Capacity | 0.660 J/g-°C | 0.158 BTU/lb-°F |
Thermal Conductivity | 0.990 W/m-K | 6.87 BTU-in/hr-ft²-°F |
Transformation Temperature, Tg | 629 °C | 1160 °F |
Softening Point | 716 °C | 1320 °F |
Annealing Point | 616 °C | 1140 °F |
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Optical Properties | Metric | English | Comments |
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Refractive Index | 1.785 @Wavelength 2323.4 nm | 1.785 @Wavelength 2323.4 nm |
| 1.791 @Wavelength 1970.1 nm | 1.791 @Wavelength 1970.1 nm |
| 1.80 @Wavelength 1529.6 nm | 1.80 @Wavelength 1529.6 nm |
| 1.811 @Wavelength 1060 nm | 1.811 @Wavelength 1060 nm |
| 1.812 @Wavelength 1014 nm | 1.812 @Wavelength 1014 nm |
| 1.82 @Wavelength 852.1 nm | 1.82 @Wavelength 852.1 nm |
| 1.83 @Wavelength 706.5 nm | 1.83 @Wavelength 706.5 nm |
| 1.836 @Wavelength 656.3 nm | 1.836 @Wavelength 656.3 nm |
| 1.838 @Wavelength 643.8 nm | 1.838 @Wavelength 643.8 nm |
| 1.839 @Wavelength 632.8 nm | 1.839 @Wavelength 632.8 nm |
| 1.846 @Wavelength 589.3 nm | 1.846 @Wavelength 589.3 nm |
| 1.846 @Wavelength 587.6 nm | 1.846 @Wavelength 587.6 nm |
| 1.855 @Wavelength 546.1 nm | 1.855 @Wavelength 546.1 nm |
| 1.872 @Wavelength 486.1 nm | 1.872 @Wavelength 486.1 nm |
| 1.874 @Wavelength 480 nm | 1.874 @Wavelength 480 nm |
| 1.894 @Wavelength 435.8 nm | 1.894 @Wavelength 435.8 nm |
| 1.914 @Wavelength 404.7 nm | 1.914 @Wavelength 404.7 nm |
Abbe Number | 23.59 | 23.59 |
| 23.78 | 23.78 |
Optical Dispersion | 0.035604 | 0.035604 |
| 0.036247 | 0.036247 |
Transmission, Visible | 80.5 % @Thickness 25.0 mm, Wavelength 420 nm | 80.5 % @Thickness 0.984 in, Wavelength 420 nm |
| 86.4 % @Thickness 25.0 mm, Wavelength 436 nm | 86.4 % @Thickness 0.984 in, Wavelength 436 nm |
| 90.8 % @Thickness 25.0 mm, Wavelength 460 nm | 90.8 % @Thickness 0.984 in, Wavelength 460 nm |
| 91.7 % @Thickness 10.0 mm, Wavelength 420 nm | 91.7 % @Thickness 0.394 in, Wavelength 420 nm |
| 94.3 % @Thickness 10.0 mm, Wavelength 436 nm | 94.3 % @Thickness 0.394 in, Wavelength 436 nm |
| 94.7 % @Thickness 25.0 mm, Wavelength 500 nm | 94.7 % @Thickness 0.984 in, Wavelength 500 nm |
| 96.2 % @Thickness 10.0 mm, Wavelength 460 nm | 96.2 % @Thickness 0.394 in, Wavelength 460 nm |
| 97.3 % @Thickness 25.0 mm, Wavelength 546 nm | 97.3 % @Thickness 0.984 in, Wavelength 546 nm |
| 97.8 % @Thickness 10.0 mm, Wavelength 500 nm | 97.8 % @Thickness 0.394 in, Wavelength 500 nm |
| 98.1 % @Thickness 25.0 mm, Wavelength 580 nm | 98.1 % @Thickness 0.984 in, Wavelength 580 nm |
| 98.3 % @Thickness 25.0 mm, Wavelength 620 nm | 98.3 % @Thickness 0.984 in, Wavelength 620 nm |
| 98.5 % @Thickness 25.0 mm, Wavelength 660 nm | 98.5 % @Thickness 0.984 in, Wavelength 660 nm |
| 98.8 % @Thickness 25.0 mm, Wavelength 700 nm | 98.8 % @Thickness 0.984 in, Wavelength 700 nm |
| 98.9 % @Thickness 10.0 mm, Wavelength 546 nm | 98.9 % @Thickness 0.394 in, Wavelength 546 nm |
| 99.2 % @Thickness 10.0 mm, Wavelength 580 nm | 99.2 % @Thickness 0.394 in, Wavelength 580 nm |
| 99.3 % @Thickness 10.0 mm, Wavelength 620 nm | 99.3 % @Thickness 0.394 in, Wavelength 620 nm |
| 99.4 % @Thickness 10.0 mm, Wavelength 660 nm | 99.4 % @Thickness 0.394 in, Wavelength 660 nm |
| 99.5 % @Thickness 10.0 mm, Wavelength 700 nm | 99.5 % @Thickness 0.394 in, Wavelength 700 nm |
IR Transmittance | 58.4 % @Thickness 25.0 mm, Wavelength 2500 nm | 58.4 % @Thickness 0.984 in, Wavelength 2500 nm |
| 64.2 % @Thickness 25.0 mm, Wavelength 2325 nm | 64.2 % @Thickness 0.984 in, Wavelength 2325 nm |
| 80.6 % @Thickness 10.0 mm, Wavelength 2500 nm | 80.6 % @Thickness 0.394 in, Wavelength 2500 nm |
| 89.3 % @Thickness 25.0 mm, Wavelength 1970 nm | 89.3 % @Thickness 0.984 in, Wavelength 1970 nm |
| 93.8 % @Thickness 10.0 mm, Wavelength 2325 nm | 93.8 % @Thickness 0.394 in, Wavelength 2325 nm |
| 95.6 % @Thickness 10.0 mm, Wavelength 1970 nm | 95.6 % @Thickness 0.394 in, Wavelength 1970 nm |
| 98 % @Thickness 25.0 mm, Wavelength 1530 nm | 98 % @Thickness 0.984 in, Wavelength 1530 nm |
| 99.2 % @Thickness 10.0 mm, Wavelength 1530 nm | 99.2 % @Thickness 0.394 in, Wavelength 1530 nm |
| 99.8 % @Thickness 25.0 mm, Wavelength 1060 nm | 99.8 % @Thickness 0.984 in, Wavelength 1060 nm |
| 99.9 % @Thickness 10.0 mm, Wavelength 1060 nm | 99.9 % @Thickness 0.394 in, Wavelength 1060 nm |
UV Transmittance | 0.10 % @Thickness 25.0 mm, Wavelength 370 nm | 0.10 % @Thickness 0.984 in, Wavelength 370 nm |
| 0.30 % @Thickness 10.0 mm, Wavelength 365 nm | 0.30 % @Thickness 0.394 in, Wavelength 365 nm |
| 6.3 % @Thickness 10.0 mm, Wavelength 370 nm | 6.3 % @Thickness 0.394 in, Wavelength 370 nm |
| 11.4 % @Thickness 25.0 mm, Wavelength 380 nm | 11.4 % @Thickness 0.984 in, Wavelength 380 nm |
| 41.3 % @Thickness 25.0 mm, Wavelength 390 nm | 41.3 % @Thickness 0.984 in, Wavelength 390 nm |
| 42 % @Thickness 10.0 mm, Wavelength 380 nm | 42 % @Thickness 0.394 in, Wavelength 380 nm |
| 62.7 % @Thickness 25.0 mm, Wavelength 400 nm | 62.7 % @Thickness 0.984 in, Wavelength 400 nm |
| 69.3 % @Thickness 25.0 mm, Wavelength 405 nm | 69.3 % @Thickness 0.984 in, Wavelength 405 nm |
| 70.2 % @Thickness 10.0 mm, Wavelength 390 nm | 70.2 % @Thickness 0.394 in, Wavelength 390 nm |
| 83 % @Thickness 10.0 mm, Wavelength 400 nm | 83 % @Thickness 0.394 in, Wavelength 400 nm |
| 86.4 % @Thickness 10.0 mm, Wavelength 405 nm | 86.4 % @Thickness 0.394 in, Wavelength 405 nm |
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Descriptive Properties |
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Climatic resistance | 1 |
Grindability | 4 |
Phosphate resistance | 1 |
Stress optical coefficient | 2.78 |