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Physical Properties | Metric | English | Comments |
---|
Specific Gravity | 4.20 g/cc | 4.20 g/cc |
|
Chemical Properties | Metric | English | Comments |
---|
Acid Class, SR | 3.0 | 3.0 |
|
Mechanical Properties | Metric | English | Comments |
---|
Hardness, Knoop | 630 @Load 0.0999 kg | 630 @Load 0.220 lb |
Modulus of Elasticity | 117.0 GPa | 16970 ksi |
Modulus of Rigidity | 45.3 GPa | 6570 ksi |
Poissons Ratio | 0.292 | 0.292 |
Abrasion | 102 | 102 |
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Thermal Properties | Metric | English | Comments |
---|
CTE, linear | 7.50 µm/m-°C @Temperature -30.0 - 70.0 °C | 4.17 µin/in-°F @Temperature -22.0 - 158 °F |
| 9.10 µm/m-°C @Temperature 100 - 300 °C | 5.06 µin/in-°F @Temperature 212 - 572 °F |
Thermal Conductivity | 0.970 W/m-K @Temperature 35.0 °C | 6.73 BTU-in/hr-ft²-°F @Temperature 95.0 °F |
Transformation Temperature, Tg | 672 °C | 1240 °F |
Softening Point | 732 °C | 1350 °F |
Annealing Point | 661 °C | 1220 °F |
Strain Point | 634 °C | 1170 °F |
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Optical Properties | Metric | English | Comments |
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Refractive Index | 1.89394 @Wavelength 2325.42 nm | 1.89394 @Wavelength 2325.42 nm |
| 1.90163 @Wavelength 1970.09 nm | 1.90163 @Wavelength 1970.09 nm |
| 1.91082 @Wavelength 1529.58 nm | 1.91082 @Wavelength 1529.58 nm |
| 1.92106 @Wavelength 1128.64 nm | 1.92106 @Wavelength 1128.64 nm |
| 1.9252 @Wavelength 1013.98 nm | 1.9252 @Wavelength 1013.98 nm |
| 1.93335 @Wavelength 852.11 nm | 1.93335 @Wavelength 852.11 nm |
| 1.93949 @Wavelength 768.19 nm | 1.93949 @Wavelength 768.19 nm |
| 1.94542 @Wavelength 706.52 nm | 1.94542 @Wavelength 706.52 nm |
| 1.9516 @Wavelength 656.27 nm | 1.9516 @Wavelength 656.27 nm |
| 1.95337 @Wavelength 643.85 nm | 1.95337 @Wavelength 643.85 nm |
| 1.95504 @Wavelength 632.8 nm | 1.95504 @Wavelength 632.8 nm |
| 1.96266 @Wavelength 589.29 nm | 1.96266 @Wavelength 589.29 nm |
| 1.963 @Wavelength 587.56 nm | 1.963 @Wavelength 587.56 nm |
| 1.9724 @Wavelength 546.07 nm | 1.9724 @Wavelength 546.07 nm |
| 1.99153 @Wavelength 486.13 nm | 1.99153 @Wavelength 486.13 nm |
| 1.99402 @Wavelength 479.99 nm | 1.99402 @Wavelength 479.99 nm |
| 2.01291 @Wavelength 441.57 nm | 2.01291 @Wavelength 441.57 nm |
| 2.01634 @Wavelength 435.835 nm | 2.01634 @Wavelength 435.835 nm |
| 2.03893 @Wavelength 404.656 nm | 2.03893 @Wavelength 404.656 nm |
Abbe Number | 23.92 | 23.92 |
| 24.11 | 24.11 |
Optical Dispersion | 0.011402 | 0.011402 |
| 0.012111 | 0.012111 |
| 0.019032 | 0.019032 |
| 0.0208 | 0.0208 |
| 0.021624 | 0.021624 |
| 0.022594 | 0.022594 |
| 0.024807 | 0.024807 |
| 0.026394 | 0.026394 |
| 0.028162 | 0.028162 |
| 0.039935 | 0.039935 |
| 0.040656 | 0.040656 |
| 0.05334 | 0.05334 |
Transmission, Visible | 13 % @Thickness 10.0 mm, Wavelength 380 nm | 13 % @Thickness 0.394 in, Wavelength 380 nm |
| 33 % @Thickness 10.0 mm, Wavelength 390 nm | 33 % @Thickness 0.394 in, Wavelength 390 nm |
| 51 % @Thickness 10.0 mm, Wavelength 400 nm | 51 % @Thickness 0.394 in, Wavelength 400 nm |
| 73 % @Thickness 10.0 mm, Wavelength 420 nm | 73 % @Thickness 0.394 in, Wavelength 420 nm |
| 84 % @Thickness 10.0 mm, Wavelength 440 nm | 84 % @Thickness 0.394 in, Wavelength 440 nm |
| 89.8 % @Thickness 10.0 mm, Wavelength 460 nm | 89.8 % @Thickness 0.394 in, Wavelength 460 nm |
| 92.9 % @Thickness 10.0 mm, Wavelength 480 nm | 92.9 % @Thickness 0.394 in, Wavelength 480 nm |
| 95 % @Thickness 10.0 mm, Wavelength 500 nm | 95 % @Thickness 0.394 in, Wavelength 500 nm |
| 97.9 % @Thickness 10.0 mm, Wavelength 550 nm | 97.9 % @Thickness 0.394 in, Wavelength 550 nm |
| 98.8 % @Thickness 10.0 mm, Wavelength 600 nm | 98.8 % @Thickness 0.394 in, Wavelength 600 nm |
| 99.1 % @Thickness 10.0 mm, Wavelength 650 nm | 99.1 % @Thickness 0.394 in, Wavelength 650 nm |
| 99.4 % @Thickness 10.0 mm, Wavelength 700 nm | 99.4 % @Thickness 0.394 in, Wavelength 700 nm |
IR Transmittance | 85 % @Thickness 10.0 mm, Wavelength 2400 nm | 85 % @Thickness 0.394 in, Wavelength 2400 nm |
| 94.7 % @Thickness 10.0 mm, Wavelength 2200 nm | 94.7 % @Thickness 0.394 in, Wavelength 2200 nm |
| 97.7 % @Thickness 10.0 mm, Wavelength 2000 nm | 97.7 % @Thickness 0.394 in, Wavelength 2000 nm |
| 98.9 % @Thickness 10.0 mm, Wavelength 1800 nm | 98.9 % @Thickness 0.394 in, Wavelength 1800 nm |
| 99.5 % @Thickness 10.0 mm, Wavelength 1600 nm | 99.5 % @Thickness 0.394 in, Wavelength 1600 nm |
| 99.7 % @Thickness 10.0 mm, Wavelength 800 nm | 99.7 % @Thickness 0.394 in, Wavelength 800 nm |
| 99.7 % @Thickness 10.0 mm, Wavelength 900 nm | 99.7 % @Thickness 0.394 in, Wavelength 900 nm |
| 99.7 % @Thickness 10.0 mm, Wavelength 1000 nm | 99.7 % @Thickness 0.394 in, Wavelength 1000 nm |
| 99.7 % @Thickness 10.0 mm, Wavelength 1200 nm | 99.7 % @Thickness 0.394 in, Wavelength 1200 nm |
| 99.7 % @Thickness 10.0 mm, Wavelength 1400 nm | 99.7 % @Thickness 0.394 in, Wavelength 1400 nm |
UV Transmittance | 2.0 % @Thickness 10.0 mm, Wavelength 370 nm | 2.0 % @Thickness 0.394 in, Wavelength 370 nm |
|
Descriptive Properties |
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Acid Resistance, Powder Method, RA(P) | 1 |
CCI | 0.00 B |
| 10.27 G |
| 10.27 R |
coloring, λ 5 | 375 |
coloring, λ 70 | 450 |
Coloring, Internal Transmission λ 0.05 | 373 |
Coloring, Internal Transmission λ 0.80 | 433 |
Knoop Hardness Class | 6 |
Ohara Code d | 963241 |
Ohara Code e | 972239 |
Phosphate Resistance, PR | 1 |
Photoelastic Constant (ß) | 1.73 |
Water Resistance, RW(P) | 1 |
Weathering Resistance (Surface Method) W(S)max | 1 |
Yield Point, At (°C) | 707 |