C89-31 by Corning
Standard
Unknown
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) | 1.689004 |
|---|---|
| Abbe Number (Vd) | 31.210861 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.33 — 1.8 µm |
$$n(\lambda) = \sqrt{2.75755 - 0.0084026\,\lambda^2 + 0.0309611\,\lambda^{-2} + 0.000897907\,\lambda^{-4} + 2.13945 \times 10^{-5}\,\lambda^{-6} + 4.90019 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 7.7 |
|---|---|
| TCE 100/300°C (10-6/K) | 8.6 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[1.1 \times 10^{-5} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 4.22 |
|---|---|
| Relative Cost | — |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
Chemical Resistance
| Climatic Resistance | — |
|---|---|
| Stain Resistance | — |
| Acid Resistance | — |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Similar Glasses (Other Manufacturers)
Similar Glasses (Corning)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| C99-30 | Corning | 1.699002 | 30.107427 | |
| C72-32 | Corning | 1.672698 | 32.31788 | |
| C67-33 | Corning | 1.666997 | 33.114648 | |
| D17-29 | Corning | 1.717409 | 29.492751 | |
| C97-36 | Corning | 1.695989 | 36.517325 | |
| D28-28 | Corning | 1.728304 | 28.397796 | |
| C48-34 | Corning | 1.647992 | 33.943274 | |
| D40-28 | Corning | 1.740001 | 28.102623 | |
| D34-26 | Corning | 1.73402 | 26.500794 | |
| C37-35 | Corning | 1.636493 | 35.322642 |