S-TIH6 by Ohara

Standard Very Common Environmentally Friendly
Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.404656–2.32542 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.404656–2.32542 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.370–2.400 µm
Optical Properties
Refractive Index (nd) 1.805181
Abbe Number (Vd) 25.425363
Dispersion Formula Sellmeier
Wavelength Range 0.404656 — 2.32542 µm
$$n(\lambda) = \sqrt{1 + \frac{1.77228\,\lambda^2}{\lambda^2 - 0.0131183} + \frac{0.345691\,\lambda^2}{\lambda^2 - 0.061448} + \frac{2.40789\,\lambda^2}{\lambda^2 - 200.753}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 8.9
TCE 100/300°C (10-6/K)
Thermal Conductivity (W/mK)
Heat Capacity (J/gK)
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[-4.43 \times 10^{-6} + 2(1.06 \times 10^{-8})\,\Delta T + 3(-3.14 \times 10^{-11})\,\Delta T^2 + \frac{9.45 \times 10^{-7} + 2(1.14 \times 10^{-9})\,\Delta T}{\lambda - 0.303}\right] \Delta T = T - T_0, \quad T_0 = 25\,°\text{C}$$
Physical Properties
Density (g/cm³) 3.37
Relative Cost 1.4
Mechanical Properties
Young's Modulus (GPa)
Poisson's Ratio
Knoop Hardness (kgf/mm²)
Chemical Resistance
Climatic Resistance 1
Stain Resistance
Acid Resistance 1
Alkali Resistance
Phosphate Resistance 1
Notes

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