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Physical Properties | Metric | English | Comments |
---|
Specific Gravity | 3.64 g/cc | 3.64 g/cc |
|
Chemical Properties | Metric | English | Comments |
---|
Acid Class, SR | 5.1 | 5.1 |
|
Mechanical Properties | Metric | English | Comments |
---|
Hardness, Knoop | 390 @Load 0.0999 kg | 390 @Load 0.220 lb |
Modulus of Elasticity | 80.6 GPa | 11700 ksi |
Modulus of Rigidity | 31.2 GPa | 4530 ksi |
Poissons Ratio | 0.291 | 0.291 |
Abrasion | 418 | 418 |
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Thermal Properties | Metric | English | Comments |
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CTE, linear | 11.5 µm/m-°C @Temperature -30.0 - 70.0 °C | 6.39 µin/in-°F @Temperature -22.0 - 158 °F |
| 13.8 µm/m-°C @Temperature 100 - 300 °C | 7.67 µin/in-°F @Temperature 212 - 572 °F |
Thermal Conductivity | 0.805 W/m-K @Temperature 35.0 °C | 5.59 BTU-in/hr-ft²-°F @Temperature 95.0 °F |
Transformation Temperature, Tg | 496 °C | 925 °F |
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Optical Properties | Metric | English | Comments |
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Refractive Index | 1.51738 @Wavelength 2325.42 nm | 1.51738 @Wavelength 2325.42 nm |
| 1.52105 @Wavelength 1970.09 nm | 1.52105 @Wavelength 1970.09 nm |
| 1.525 @Wavelength 1529.58 nm | 1.525 @Wavelength 1529.58 nm |
| 1.52849 @Wavelength 1128.64 nm | 1.52849 @Wavelength 1128.64 nm |
| 1.52965 @Wavelength 1013.98 nm | 1.52965 @Wavelength 1013.98 nm |
| 1.53167 @Wavelength 852.11 nm | 1.53167 @Wavelength 852.11 nm |
| 1.53304 @Wavelength 768.19 nm | 1.53304 @Wavelength 768.19 nm |
| 1.5343 @Wavelength 706.52 nm | 1.5343 @Wavelength 706.52 nm |
| 1.53555 @Wavelength 656.27 nm | 1.53555 @Wavelength 656.27 nm |
| 1.5359 @Wavelength 643.85 nm | 1.5359 @Wavelength 643.85 nm |
| 1.53623 @Wavelength 632.8 nm | 1.53623 @Wavelength 632.8 nm |
| 1.53769 @Wavelength 589.29 nm | 1.53769 @Wavelength 589.29 nm |
| 1.53775 @Wavelength 587.56 nm | 1.53775 @Wavelength 587.56 nm |
| 1.53947 @Wavelength 546.07 nm | 1.53947 @Wavelength 546.07 nm |
| 1.54275 @Wavelength 486.13 nm | 1.54275 @Wavelength 486.13 nm |
| 1.54316 @Wavelength 479.99 nm | 1.54316 @Wavelength 479.99 nm |
| 1.54612 @Wavelength 441.57 nm | 1.54612 @Wavelength 441.57 nm |
| 1.54664 @Wavelength 435.835 nm | 1.54664 @Wavelength 435.835 nm |
| 1.54984 @Wavelength 404.656 nm | 1.54984 @Wavelength 404.656 nm |
| 1.55525 @Wavelength 365.015 nm | 1.55525 @Wavelength 365.015 nm |
Abbe Number | 74.34 | 74.34 |
| 74.7 | 74.7 |
Optical Dispersion | 0.002196 | 0.002196 |
| 0.00251 | 0.00251 |
| 0.003203 | 0.003203 |
| 0.003565 | 0.003565 |
| 0.003692 | 0.003692 |
| 0.003882 | 0.003882 |
| 0.003915 | 0.003915 |
| 0.005905 | 0.005905 |
| 0.006255 | 0.006255 |
| 0.007199 | 0.007199 |
| 0.007257 | 0.007257 |
| 0.008618 | 0.008618 |
| 0.008885 | 0.008885 |
| 0.012092 | 0.012092 |
Transmission, Visible | 98.9 % @Thickness 10.0 mm, Wavelength 420 nm | 98.9 % @Thickness 0.394 in, Wavelength 420 nm |
| 99 % @Thickness 10.0 mm, Wavelength 380 nm | 99 % @Thickness 0.394 in, Wavelength 380 nm |
| 99 % @Thickness 10.0 mm, Wavelength 440 nm | 99 % @Thickness 0.394 in, Wavelength 440 nm |
| 99.2 % @Thickness 10.0 mm, Wavelength 390 nm | 99.2 % @Thickness 0.394 in, Wavelength 390 nm |
| 99.2 % @Thickness 10.0 mm, Wavelength 400 nm | 99.2 % @Thickness 0.394 in, Wavelength 400 nm |
| 99.2 % @Thickness 10.0 mm, Wavelength 460 nm | 99.2 % @Thickness 0.394 in, Wavelength 460 nm |
| 99.5 % @Thickness 10.0 mm, Wavelength 480 nm | 99.5 % @Thickness 0.394 in, Wavelength 480 nm |
| 99.6 % @Thickness 10.0 mm, Wavelength 500 nm | 99.6 % @Thickness 0.394 in, Wavelength 500 nm |
| 99.6 % @Thickness 10.0 mm, Wavelength 650 nm | 99.6 % @Thickness 0.394 in, Wavelength 650 nm |
| 99.6 % @Thickness 10.0 mm, Wavelength 700 nm | 99.6 % @Thickness 0.394 in, Wavelength 700 nm |
| 99.7 % @Thickness 10.0 mm, Wavelength 600 nm | 99.7 % @Thickness 0.394 in, Wavelength 600 nm |
| 99.8 % @Thickness 10.0 mm, Wavelength 550 nm | 99.8 % @Thickness 0.394 in, Wavelength 550 nm |
IR Transmittance | 98.4 % @Thickness 10.0 mm, Wavelength 2400 nm | 98.4 % @Thickness 0.394 in, Wavelength 2400 nm |
| 98.7 % @Thickness 10.0 mm, Wavelength 2200 nm | 98.7 % @Thickness 0.394 in, Wavelength 2200 nm |
| 99.3 % @Thickness 10.0 mm, Wavelength 2000 nm | 99.3 % @Thickness 0.394 in, Wavelength 2000 nm |
| 99.4 % @Thickness 10.0 mm, Wavelength 800 nm | 99.4 % @Thickness 0.394 in, Wavelength 800 nm |
| 99.5 % @Thickness 10.0 mm, Wavelength 900 nm | 99.5 % @Thickness 0.394 in, Wavelength 900 nm |
| 99.5 % @Thickness 10.0 mm, Wavelength 1800 nm | 99.5 % @Thickness 0.394 in, Wavelength 1800 nm |
| 99.6 % @Thickness 10.0 mm, Wavelength 1000 nm | 99.6 % @Thickness 0.394 in, Wavelength 1000 nm |
| 99.6 % @Thickness 10.0 mm, Wavelength 1600 nm | 99.6 % @Thickness 0.394 in, Wavelength 1600 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 | 3.0 % @Thickness 10.0 mm, Wavelength 280 nm | 3.0 % @Thickness 0.394 in, Wavelength 280 nm |
| 8.0 % @Thickness 10.0 mm, Wavelength 290 nm | 8.0 % @Thickness 0.394 in, Wavelength 290 nm |
| 19 % @Thickness 10.0 mm, Wavelength 300 nm | 19 % @Thickness 0.394 in, Wavelength 300 nm |
| 36 % @Thickness 10.0 mm, Wavelength 310 nm | 36 % @Thickness 0.394 in, Wavelength 310 nm |
| 55 % @Thickness 10.0 mm, Wavelength 320 nm | 55 % @Thickness 0.394 in, Wavelength 320 nm |
| 72 % @Thickness 10.0 mm, Wavelength 330 nm | 72 % @Thickness 0.394 in, Wavelength 330 nm |
| 85 % @Thickness 10.0 mm, Wavelength 340 nm | 85 % @Thickness 0.394 in, Wavelength 340 nm |
| 92.4 % @Thickness 10.0 mm, Wavelength 350 nm | 92.4 % @Thickness 0.394 in, Wavelength 350 nm |
| 96.2 % @Thickness 10.0 mm, Wavelength 360 nm | 96.2 % @Thickness 0.394 in, Wavelength 360 nm |
| 98.1 % @Thickness 10.0 mm, Wavelength 370 nm | 98.1 % @Thickness 0.394 in, Wavelength 370 nm |
|
Descriptive Properties |
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Acid Resistance, Powder Method, RA(P) | 3 |
CCI | 0.00 B |
| 0.28 G |
| 0.28 R |
coloring, λ 80 | 345 |
Coloring, Internal Transmission λ 0.05 | 284 |
Coloring, Internal Transmission λ 0.80 | 336 |
Knoop Hardness Class | 4 |
Ohara Code d | 538747 |
Ohara Code e | 539743 |
Phosphate Resistance, PR | 4.1 |
Photoelastic Constant (ß) | 0.85 |
Water Resistance, RW(P) | 1 |
Weathering Resistance (Surface Method) W(S)max | 1 |
Yield Point, At (°C) | 524 |