| |
| Physical Properties | Original Value | Comments |
|---|
| Density | 6.19 g/cc |
| |
| Chemical Properties | Original Value | Comments |
|---|
| Acid Class, SR | 53.3 |
| Alkali Class, AR | 2.3 |
| Stain Resistance Class, FR | 5.0 |
| |
| Mechanical Properties | Original Value | Comments |
|---|
| Hardness, Knoop | 404 |
| Modulus of Elasticity | 79.0 GPa |
| Poissons Ratio | 0.275 |
| Shear Modulus | 31.0 GPa |
| |
| Thermal Properties | Original Value | Comments |
|---|
| CTE, linear | 8.40 µm/m-°C
@Temperature -20.0 - 70.0 °C |
| | 9.70 µm/m-°C
@Temperature 30.0 - 200 °C |
| Specific Heat Capacity | 0.370 J/g-°C |
| Thermal Conductivity | 0.650 W/m-K |
| Transformation Temperature, Tg | 428 °C |
| Softening Point | 504 °C |
| Annealing Point | 430 °C |
| |
| Optical Properties | Original Value | Comments |
|---|
| Refractive Index | 1.933
@Wavelength 2323.4 nm |
| | 1.939
@Wavelength 1970.1 nm |
| | 1.947
@Wavelength 1529.6 nm |
| | 1.959
@Wavelength 1060 nm |
| | 1.961
@Wavelength 1014 nm |
| | 1.97
@Wavelength 852.1 nm |
| | 1.984
@Wavelength 706.5 nm |
| | 1.991
@Wavelength 656.3 nm |
| | 1.993
@Wavelength 643.8 nm |
| | 1.995
@Wavelength 632.8 nm |
| | 2.004
@Wavelength 589.3 nm |
| | 2.005
@Wavelength 587.6 nm |
| | 2.016
@Wavelength 546.1 nm |
| | 2.039
@Wavelength 486.1 nm |
| | 2.042
@Wavelength 480 nm |
| | 2.07
@Wavelength 435.8 nm |
| Abbe Number | 20.82 |
| | 21 |
| Optical Dispersion | 0.047867 |
| | 0.048826 |
| Transmission, Visible | 5.0 %
@Thickness 25.0 mm,
Wavelength 420 nm |
| | 25 %
@Thickness 25.0 mm,
Wavelength 436 nm |
| | 30.2 %
@Thickness 10.0 mm,
Wavelength 420 nm |
| | 50 %
@Thickness 25.0 mm,
Wavelength 460 nm |
| | 57.4 %
@Thickness 10.0 mm,
Wavelength 436 nm |
| | 75.8 %
@Thickness 10.0 mm,
Wavelength 460 nm |
| | 78 %
@Thickness 25.0 mm,
Wavelength 500 nm |
| | 90.5 %
@Thickness 10.0 mm,
Wavelength 500 nm |
| | 94 %
@Thickness 25.0 mm,
Wavelength 546 nm |
| | 97.3 %
@Thickness 25.0 mm,
Wavelength 580 nm |
| | 97.6 %
@Thickness 10.0 mm,
Wavelength 546 nm |
| | 98.5 %
@Thickness 25.0 mm,
Wavelength 620 nm |
| | 98.9 %
@Thickness 25.0 mm,
Wavelength 660 nm |
| | 98.9 %
@Thickness 10.0 mm,
Wavelength 580 nm |
| | 99.3 %
@Thickness 25.0 mm,
Wavelength 700 nm |
| | 99.4 %
@Thickness 10.0 mm,
Wavelength 620 nm |
| | 99.6 %
@Thickness 10.0 mm,
Wavelength 660 nm |
| | 99.7 %
@Thickness 10.0 mm,
Wavelength 700 nm |
| IR Transmittance | 56 %
@Thickness 25.0 mm,
Wavelength 2500 nm |
| | 78 %
@Thickness 25.0 mm,
Wavelength 2325 nm |
| | 79.3 %
@Thickness 10.0 mm,
Wavelength 2500 nm |
| | 90.5 %
@Thickness 10.0 mm,
Wavelength 2325 nm |
| | 94 %
@Thickness 25.0 mm,
Wavelength 1970 nm |
| | 97.6 %
@Thickness 10.0 mm,
Wavelength 1970 nm |
| | 99 %
@Thickness 25.0 mm,
Wavelength 1530 nm |
| | 99.6 %
@Thickness 10.0 mm,
Wavelength 1530 nm |
| | 99.8 %
@Thickness 25.0 mm,
Wavelength 1060 nm |
| | 99.9 %
@Thickness 10.0 mm,
Wavelength 1060 nm |
| UV Transmittance | 0.70 %
@Thickness 10.0 mm,
Wavelength 400 nm |
| | 3.6 %
@Thickness 10.0 mm,
Wavelength 405 nm |
| |
| Descriptive Properties |
|---|
| Acid resistance class | 4 |
| Climatic resistance | 1 |
| Grindability | 298 |
| Phosphate resistance | 2 |
| Stress optical coefficient | 1.61 |
| Water resistance class | 1 |
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