| |
| Physical Properties | Metric | English | Comments |
|---|
| Specific Gravity | 4.40 g/cc | 4.40 g/cc |
| |
| Chemical Properties | Metric | English | Comments |
|---|
| Acid Class, SR | 51 | 51 |
| |
| Mechanical Properties | Metric | English | Comments |
|---|
| Hardness, Knoop | 720
@Load 0.0999 kg | 720
@Load 0.220 lb |
| Modulus of Elasticity | 122.2 GPa | 17720 ksi |
| Modulus of Rigidity | 47.3 GPa | 6860 ksi |
| Poissons Ratio | 0.291 | 0.291 |
| Abrasion | 61 | 61 |
| |
| Thermal Properties | Metric | English | Comments |
|---|
CTE, linear  | 5.80 µm/m-°C
@Temperature -30.0 - 70.0 °C | 3.22 µin/in-°F
@Temperature -22.0 - 158 °F |
| | 7.00 µm/m-°C
@Temperature 100 - 300 °C | 3.89 µin/in-°F
@Temperature 212 - 572 °F |
| Thermal Conductivity | 0.842 W/m-K
@Temperature 35.0 °C | 5.84 BTU-in/hr-ft²-°F
@Temperature 95.0 °F |
| Transformation Temperature, Tg | 700 °C | 1290 °F |
| Softening Point | 738 °C | 1360 °F |
| Annealing Point | 670 °C | 1240 °F |
| Strain Point | 651 °C | 1200 °F |
| |
| Optical Properties | Metric | English | Comments |
|---|
| Refractive Index | 1.71387
@Wavelength 2325.42 nm | 1.71387
@Wavelength 2325.42 nm |
| | 1.72153
@Wavelength 1970.09 nm | 1.72153
@Wavelength 1970.09 nm |
| | 1.72961
@Wavelength 1529.58 nm | 1.72961
@Wavelength 1529.58 nm |
| | 1.73662
@Wavelength 1128.64 nm | 1.73662
@Wavelength 1128.64 nm |
| | 1.73893
@Wavelength 1013.98 nm | 1.73893
@Wavelength 1013.98 nm |
| | 1.74292
@Wavelength 852.11 nm | 1.74292
@Wavelength 852.11 nm |
| | 1.74565
@Wavelength 768.19 nm | 1.74565
@Wavelength 768.19 nm |
| | 1.74814
@Wavelength 706.52 nm | 1.74814
@Wavelength 706.52 nm |
| | 1.75062
@Wavelength 656.27 nm | 1.75062
@Wavelength 656.27 nm |
| | 1.75132
@Wavelength 643.85 nm | 1.75132
@Wavelength 643.85 nm |
| | 1.75197
@Wavelength 632.8 nm | 1.75197
@Wavelength 632.8 nm |
| | 1.75487
@Wavelength 589.29 nm | 1.75487
@Wavelength 589.29 nm |
| | 1.75500
@Wavelength 587.56 nm | 1.75500
@Wavelength 587.56 nm |
| | 1.75844
@Wavelength 546.07 nm | 1.75844
@Wavelength 546.07 nm |
| | 1.76505
@Wavelength 486.13 nm | 1.76505
@Wavelength 486.13 nm |
| | 1.76588
@Wavelength 479.99 nm | 1.76588
@Wavelength 479.99 nm |
| | 1.77191
@Wavelength 441.57 nm | 1.77191
@Wavelength 441.57 nm |
| | 1.77296
@Wavelength 435.835 nm | 1.77296
@Wavelength 435.835 nm |
| | 1.77954
@Wavelength 404.656 nm | 1.77954
@Wavelength 404.656 nm |
| | 1.79083
@Wavelength 365.015 nm | 1.79083
@Wavelength 365.015 nm |
| Abbe Number | 52.08 | 52.08 |
| | 52.32 | 52.32 |
| Optical Dispersion | 0.014431 | 0.014431 |
| | 0.014562 | 0.014562 |
| Transmission, Visible | 95.6 %
@Wavelength 380 nm | 95.6 %
@Wavelength 380 nm |
| | 97.2 %
@Wavelength 390 nm | 97.2 %
@Wavelength 390 nm |
| | 98 %
@Wavelength 400 nm | 98 %
@Wavelength 400 nm |
| | 98.8 %
@Wavelength 420 nm | 98.8 %
@Wavelength 420 nm |
| | 99.1 %
@Wavelength 440 nm | 99.1 %
@Wavelength 440 nm |
| | 99.4 %
@Wavelength 460 nm | 99.4 %
@Wavelength 460 nm |
| | 99.6 %
@Wavelength 480 nm | 99.6 %
@Wavelength 480 nm |
| | 99.7 %
@Wavelength 500 nm | 99.7 %
@Wavelength 500 nm |
| | 99.8 %
@Wavelength 700 nm | 99.8 %
@Wavelength 700 nm |
| | 99.8 %
@Wavelength 650 nm | 99.8 %
@Wavelength 650 nm |
| | 99.8 %
@Wavelength 600 nm | 99.8 %
@Wavelength 600 nm |
| | 99.8 %
@Wavelength 550 nm | 99.8 %
@Wavelength 550 nm |
| IR Transmittance | 62 %
@Wavelength 2400 nm | 62 %
@Wavelength 2400 nm |
| | 88 %
@Wavelength 2200 nm | 88 %
@Wavelength 2200 nm |
| | 98.4 %
@Wavelength 1800 nm | 98.4 %
@Wavelength 1800 nm |
| | 99.3 %
@Wavelength 1400 nm | 99.3 %
@Wavelength 1400 nm |
| | 99.3 %
@Wavelength 1600 nm | 99.3 %
@Wavelength 1600 nm |
| | 99.7 %
@Wavelength 1000 nm | 99.7 %
@Wavelength 1000 nm |
| | 99.7 %
@Wavelength 1200 nm | 99.7 %
@Wavelength 1200 nm |
| | 99.8 %
@Wavelength 800 nm | 99.8 %
@Wavelength 800 nm |
| | 99.8 %
@Wavelength 900 nm | 99.8 %
@Wavelength 900 nm |
| UV Transmittance | 3.0 %
@Wavelength 280 nm | 3.0 %
@Wavelength 280 nm |
| | 12 %
@Wavelength 290 nm | 12 %
@Wavelength 290 nm |
| | 21 %
@Wavelength 300 nm | 21 %
@Wavelength 300 nm |
| | 24 %
@Wavelength 310 nm | 24 %
@Wavelength 310 nm |
| | 47 %
@Wavelength 320 nm | 47 %
@Wavelength 320 nm |
| | 61 %
@Wavelength 330 nm | 61 %
@Wavelength 330 nm |
| | 73 %
@Wavelength 340 nm | 73 %
@Wavelength 340 nm |
| | 82 %
@Wavelength 350 nm | 82 %
@Wavelength 350 nm |
| | 88 %
@Wavelength 360 nm | 88 %
@Wavelength 360 nm |
| | 93 %
@Wavelength 370 nm | 93 %
@Wavelength 370 nm |
| |
| Descriptive Properties |
|---|
| Acid Resistance, Powder Method, RAP) | 4 |
| coloring, λ 5 | 280 |
| coloring, λ 80 | 370 |
| Knoop Hardness Class | 7 |
| Melt Frequency | 5 |
| Ohara Code d | 755523 |
| Ohara Code e | 758521 |
| Ohara Status | Standard |
| Phosphate Resistance, PR | 2 |
| Photoelastic Constant (ß) | 1.48 |
| Relative Price | 13.5 |
| Water Resistance, RW(P) | 1 |
| Weathering Resistance (Surface Method) W(S)max | 1 |
| Yield Point, At (°C) | 712 |
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