|
Physical Properties | Original Value | Comments |
---|
Density | 4.54 g/cc |
|
Mechanical Properties | Original Value | Comments |
---|
Hardness, Knoop | 655 |
Modulus of Elasticity | 119 GPa |
Poissons Ratio | 0.298 |
Shear Modulus | 45.8 GPa |
|
Thermal Properties | Original Value | Comments |
---|
CTE, linear | 5.90 µm/m-°C @Temperature -30.0 - 70.0 °C |
| 7.30 µm/m-°C @Temperature 20.0 - 300 °C |
Specific Heat Capacity | 0.560 J/g-°C |
Thermal Conductivity | 0.950 W/m-K |
Transformation Temperature, Tg | 527 °C |
Softening Point | 660 °C |
Annealing Point | 526 °C |
|
Optical Properties | Original Value | Comments |
---|
Refractive Index | 1.762 @Wavelength 2323.4 nm |
| 1.769 @Wavelength 1970.1 nm |
| 1.777 @Wavelength 1529.6 nm |
| 1.786 @Wavelength 1060 nm |
| 1.787 @Wavelength 1014 nm |
| 1.792 @Wavelength 852.1 nm |
| 1.799 @Wavelength 706.5 nm |
| 1.802 @Wavelength 656.3 nm |
| 1.803 @Wavelength 643.8 nm |
| 1.804 @Wavelength 632.8 nm |
| 1.808 @Wavelength 589.3 nm |
| 1.808 @Wavelength 587.6 nm |
| 1.813 @Wavelength 546.1 nm |
| 1.822 @Wavelength 486.1 nm |
| 1.823 @Wavelength 480 nm |
| 1.833 @Wavelength 435.8 nm |
| 1.843 @Wavelength 404.7 nm |
Abbe Number | 40.22 |
| 40.46 |
Optical Dispersion | 0.019985 |
| 0.020223 |
Transmission, Visible | 95 % @Thickness 25.0 mm, Wavelength 420 nm |
| 96.3 % @Thickness 25.0 mm, Wavelength 436 nm |
| 97.5 % @Thickness 25.0 mm, Wavelength 460 nm |
| 98 % @Thickness 10.0 mm, Wavelength 420 nm |
| 98.5 % @Thickness 10.0 mm, Wavelength 436 nm |
| 98.7 % @Thickness 25.0 mm, Wavelength 500 nm |
| 99 % @Thickness 10.0 mm, Wavelength 460 nm |
| 99.2 % @Thickness 25.0 mm, Wavelength 620 nm |
| 99.2 % @Thickness 25.0 mm, Wavelength 580 nm |
| 99.2 % @Thickness 25.0 mm, Wavelength 546 nm |
| 99.3 % @Thickness 25.0 mm, Wavelength 660 nm |
| 99.5 % @Thickness 10.0 mm, Wavelength 500 nm |
| 99.5 % @Thickness 25.0 mm, Wavelength 700 nm |
| 99.7 % @Thickness 10.0 mm, Wavelength 660 nm |
| 99.7 % @Thickness 10.0 mm, Wavelength 620 nm |
| 99.7 % @Thickness 10.0 mm, Wavelength 546 nm |
| 99.7 % @Thickness 10.0 mm, Wavelength 580 nm |
| 99.8 % @Thickness 10.0 mm, Wavelength 700 nm |
IR Transmittance | 20 % @Thickness 25.0 mm, Wavelength 2500 nm |
| 52.5 % @Thickness 10.0 mm, Wavelength 2500 nm |
| 53 % @Thickness 25.0 mm, Wavelength 2325 nm |
| 77.6 % @Thickness 10.0 mm, Wavelength 2325 nm |
| 88 % @Thickness 25.0 mm, Wavelength 1970 nm |
| 95 % @Thickness 10.0 mm, Wavelength 1970 nm |
| 98.1 % @Thickness 25.0 mm, Wavelength 1530 nm |
| 99.2 % @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 | 3.0 % @Thickness 25.0 mm, Wavelength 334 nm |
| 3.2 % @Thickness 10.0 mm, Wavelength 320 nm |
| 29.2 % @Thickness 10.0 mm, Wavelength 334 nm |
| 35 % @Thickness 25.0 mm, Wavelength 350 nm |
| 65 % @Thickness 25.0 mm, Wavelength 365 nm |
| 65.7 % @Thickness 10.0 mm, Wavelength 350 nm |
| 72 % @Thickness 25.0 mm, Wavelength 370 nm |
| 84.2 % @Thickness 10.0 mm, Wavelength 365 nm |
| 87.7 % @Thickness 10.0 mm, Wavelength 370 nm |
| 92 % @Thickness 25.0 mm, Wavelength 400 nm |
| 92.8 % @Thickness 10.0 mm, Wavelength 380 nm |
| 93 % @Thickness 25.0 mm, Wavelength 380 nm |
| 93 % @Thickness 25.0 mm, Wavelength 405 nm |
| 95.4 % @Thickness 10.0 mm, Wavelength 390 nm |
| 96.7 % @Thickness 10.0 mm, Wavelength 400 nm |
| 97.1 % @Thickness 10.0 mm, Wavelength 405 nm |
| 98 % @Thickness 25.0 mm, Wavelength 390 nm |
|
Descriptive Properties |
---|
Acid resistance class | 3 |
Grindability | 62 |
Stress optical coefficient | 2.41 |
Water resistance class | 1 |
Yield point/sag temperature | 571°C |