SF6 by Sumita
Obsolete
Very Rare
Environmentally Dangerous
Refractive Index vs Wavelength
Refractive Index Calculator
dn/dλ vs Wavelength
dn/dλ Calculator
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Optical Properties
| Refractive Index (nd) | 1.80518 |
|---|---|
| Abbe Number (Vd) | 25.5 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.27 — 2.0 µm |
$$n(\lambda) = \sqrt{3.11997 - 0.011028\,\lambda^2 + 0.0410534\,\lambda^{-2} + 0.00324489\,\lambda^{-4} - 0.000227095\,\lambda^{-6} + 2.6893 \times 10^{-5}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | — |
|---|---|
| TCE 100/300°C (10-6/K) | 8.8 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[0 + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 5.2 |
|---|---|
| Relative Cost | — |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
Chemical Resistance
| Climatic Resistance | 1 |
|---|---|
| Stain Resistance | — |
| Acid Resistance | 3 |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| E05-25 | Corning | 1.805093 | 25.506125 | |
| ZF7LTT | CDGM | 1.80519 | 25.471232 | |
| ZF7LGT | CDGM | 1.80519 | 25.471232 | |
| ZF7L | CDGM | 1.80519 | 25.471232 | |
| FD6 | Hoya | 1.805184 | 25.465194 | |
| FD60-W | Hoya | 1.80518 | 25.46 | |
| FD60 | Hoya | 1.80518 | 25.46 | |
| H-ZF7LAGT | CDGM | 1.80518 | 25.456256 | |
| H-ZF7LA | CDGM | 1.80518 | 25.456256 | |
| PBH6 | Ohara | 1.805177 | 25.435012 |