H-K51 by CDGM
Preferred
Very Common
Environmentally Friendly
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) | 1.52307 |
|---|---|
| Abbe Number (Vd) | 58.639792 |
| Dispersion Formula | Sellmeier |
| Wavelength Range | 0.365 — 2.325 µm |
$$n(\lambda) = \sqrt{1 + \frac{0.960162\,\lambda^2}{\lambda^2 - 116.242} + \frac{1.18369\,\lambda^2}{\lambda^2 - 0.011803} + \frac{0.102338\,\lambda^2}{\lambda^2 - -0.0189576}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 8.0 |
|---|---|
| TCE 100/300°C (10-6/K) | 9.9 |
| Thermal Conductivity (W/mK) | 0.905 |
| Heat Capacity (J/gK) | 0.707 |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[-7.23 \times 10^{-7} + 2(1.38 \times 10^{-8})\,\Delta T + 3(-8.37 \times 10^{-11})\,\Delta T^2 + \frac{5.74 \times 10^{-7} + 2(1.43 \times 10^{-9})\,\Delta T}{\lambda - 0.169}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 2.53 |
|---|---|
| Relative Cost | 1.6 |
Mechanical Properties
| Young's Modulus (GPa) | 74.11 |
|---|---|
| Poisson's Ratio | 0.223 |
| Knoop Hardness (kgf/mm²) | 541.0 |
Chemical Resistance
| Climatic Resistance | 2 |
|---|---|
| Stain Resistance | — |
| Acid Resistance | — |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Similar Glasses (Other Manufacturers)
Similar Glasses (CDGM)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| H-K10 | CDGM | 1.51818 | 58.949331 | |
| H-K50 | CDGM | 1.52249 | 59.480754 | |
| H-K11 | CDGM | 1.52638 | 60.15737 | |
| H-BAK1 | CDGM | 1.53028 | 60.466139 | |
| H-K8 | CDGM | 1.51602 | 56.794825 | |
| H-K7 | CDGM | 1.51478 | 60.634896 | |
| H-K6 | CDGM | 1.511125 | 60.478905 | |
| H-BAK2 | CDGM | 1.53996 | 59.724182 | |
| K4A | CDGM | 1.50802 | 61.052897 | |
| H-K12 | CDGM | 1.533589 | 55.469983 |