|
Physical Properties | Original Value | Comments |
---|
Density | 3.62 g/cc |
|
Chemical Properties | Original Value | Comments |
---|
Acid Class, SR | 52.2 |
Alkali Class, AR | 2.0 |
Stain Resistance Class, FR | 3.0 |
|
Mechanical Properties | Original Value | Comments |
---|
Hardness, Knoop | 620 |
Modulus of Elasticity | 84.0 GPa |
Poissons Ratio | 0.265 |
Shear Modulus | 33.2 GPa |
|
Thermal Properties | Original Value | Comments |
---|
CTE, linear | 6.70 µm/m-°C @Temperature -30.0 - 70.0 °C |
| 7.60 µm/m-°C @Temperature 20.0 - 300 °C |
Specific Heat Capacity | 0.570 J/g-°C |
Thermal Conductivity | 0.770 W/m-K |
Transformation Temperature, Tg | 641 °C |
Softening Point | 634 °C |
Annealing Point | 641 °C |
|
Optical Properties | Original Value | Comments |
---|
Refractive Index | 1.592 @Wavelength 2325.4 nm |
| 1.598 @Wavelength 1970.1 nm |
| 1.604 @Wavelength 1529.6 nm |
| 1.61 @Wavelength 1014 nm |
| 1.61 @Wavelength 1060 nm |
| 1.613 @Wavelength 852.1 nm |
| 1.617 @Wavelength 706.5 nm |
| 1.619 @Wavelength 656.3 nm |
| 1.62 @Wavelength 632.8 nm |
| 1.62 @Wavelength 634.8 nm |
| 1.622 @Wavelength 587.6 nm |
| 1.622 @Wavelength 589.3 nm |
| 1.625 @Wavelength 546.1 nm |
| 1.63 @Wavelength 486.1 nm |
| 1.631 @Wavelength 480 nm |
| 1.636 @Wavelength 435.8 nm |
| 1.641 @Wavelength 404.7 nm |
| 1.649 @Wavelength 365 nm |
| 1.658 @Wavelength 334.1 nm |
Abbe Number | 57.75 |
| 58.02 |
Optical Dispersion | 0.010737 |
| 0.010832 |
Transmission, Visible | 97.4 % @Thickness 25.0 mm, Wavelength 420 nm |
| 97.8 % @Thickness 25.0 mm, Wavelength 436 nm |
| 98.2 % @Thickness 25.0 mm, Wavelength 460 nm |
| 99 % @Thickness 10.0 mm, Wavelength 420 nm |
| 99 % @Thickness 25.0 mm, Wavelength 500 nm |
| 99.1 % @Thickness 10.0 mm, Wavelength 436 nm |
| 99.2 % @Thickness 25.0 mm, Wavelength 620 nm |
| 99.2 % @Thickness 25.0 mm, Wavelength 660 nm |
| 99.3 % @Thickness 10.0 mm, Wavelength 460 nm |
| 99.3 % @Thickness 25.0 mm, Wavelength 580 nm |
| 99.3 % @Thickness 25.0 mm, Wavelength 546 nm |
| 99.4 % @Thickness 25.0 mm, Wavelength 700 nm |
| 99.6 % @Thickness 10.0 mm, Wavelength 500 nm |
| 99.7 % @Thickness 10.0 mm, Wavelength 580 nm |
| 99.7 % @Thickness 10.0 mm, Wavelength 546 nm |
| 99.7 % @Thickness 10.0 mm, Wavelength 660 nm |
| 99.7 % @Thickness 10.0 mm, Wavelength 620 nm |
| 99.8 % @Thickness 10.0 mm, Wavelength 700 nm |
IR Transmittance | 37 % @Thickness 25.0 mm, Wavelength 2500 nm |
| 62 % @Thickness 25.0 mm, Wavelength 2325 nm |
| 67.2 % @Thickness 10.0 mm, Wavelength 2500 nm |
| 82.6 % @Thickness 10.0 mm, Wavelength 2325 nm |
| 90 % @Thickness 25.0 mm, Wavelength 1970 nm |
| 95.9 % @Thickness 10.0 mm, Wavelength 1970 nm |
| 97.5 % @Thickness 25.0 mm, Wavelength 1530 nm |
| 99 % @Thickness 10.0 mm, Wavelength 1530 nm |
| 99.1 % @Thickness 25.0 mm, Wavelength 1060 nm |
| 99.6 % @Thickness 10.0 mm, Wavelength 1060 nm |
UV Transmittance | 1.0 % @Thickness 10.0 mm, Wavelength 310 nm |
| 14.4 % @Thickness 10.0 mm, Wavelength 320 nm |
| 18 % @Thickness 25.0 mm, Wavelength 334 nm |
| 50.4 % @Thickness 10.0 mm, Wavelength 334 nm |
| 56.3 % @Thickness 25.0 mm, Wavelength 350 nm |
| 79.5 % @Thickness 10.0 mm, Wavelength 350 nm |
| 80 % @Thickness 25.0 mm, Wavelength 365 nm |
| 85 % @Thickness 25.0 mm, Wavelength 370 nm |
| 91 % @Thickness 25.0 mm, Wavelength 380 nm |
| 91.5 % @Thickness 10.0 mm, Wavelength 365 nm |
| 93.7 % @Thickness 10.0 mm, Wavelength 370 nm |
| 94.1 % @Thickness 25.0 mm, Wavelength 390 nm |
| 96 % @Thickness 25.0 mm, Wavelength 400 nm |
| 96.3 % @Thickness 10.0 mm, Wavelength 380 nm |
| 96.6 % @Thickness 25.0 mm, Wavelength 405 nm |
| 97.6 % @Thickness 10.0 mm, Wavelength 390 nm |
| 98.4 % @Thickness 10.0 mm, Wavelength 400 nm |
| 98.6 % @Thickness 10.0 mm, Wavelength 405 nm |
|
Descriptive Properties |
---|
Climatic resistance | 3 |
Grindability | 3 |
Phosphate resistance | 3.2 |
Stress optical coefficient | 1.93 |