SF6G05 by Schott

Preferred Unknown Radiation Resistant Environmentally Dangerous

SF6G05 by Schott is a preferred optical glass. It transmits from 0.46 to 2.50 µm with an nd of 1.80906 and a Vd of 25.27. It has medium thermal expansion (CTE of 7.8×10⁻⁶/K), below average chemical resistance, low relative cost, radiation resistance, and dangerous environmental properties.

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.46–2.5 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.46–2.5 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.460–2.500 µm
Optical Properties
Refractive Index (nd) 1.80906
Abbe Number (Vd) 25.27
Dispersion Formula Sellmeier
Wavelength Range 0.46 — 2.5 µm
$$n(\lambda) = \sqrt{1 + \frac{1.62114\,\lambda^2}{\lambda^2 - 0.0113479} + \frac{0.506586\,\lambda^2}{\lambda^2 - 0.053584} + \frac{10.4032\,\lambda^2}{\lambda^2 - 1118.84}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 7.8
TCE 100/300°C (10-6/K) 8.8
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[6.9 \times 10^{-6} + 2(1.76 \times 10^{-8})\,\Delta T + 3(-3.17 \times 10^{-11})\,\Delta T^2 + \frac{1.89 \times 10^{-6} + 2(1.5 \times 10^{-9})\,\Delta T}{\lambda - 0.256}\right] \Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
Density (g/cm³) 5.2
Relative Cost 2.9
Mechanical Properties
Young's Modulus (GPa) —
Poisson's Ratio —
Knoop Hardness (kgf/mm²) 360.0
Chemical Resistance
Climatic Resistance 4
Stain Resistance 3
Acid Resistance 51
Alkali Resistance 2
Phosphate Resistance 3
Notes

radiation resistant glass. lead containing glass type

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H-ZF7LAGT CDGM 1.80518 25.456256
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Similar Glasses (Schott)
Glass Manufacturer nd Vd Compare
N-SF6HTultra Schott 1.80518 25.36
N-SF6 Schott 1.80518 25.36
N-SF6HT Schott 1.80518 25.36
SFL6 Schott 1.80518 25.39
SF6 Schott 1.80518 25.43
SF6HT Schott 1.80518 25.43
N-SF11 Schott 1.78472 25.68
SF11 Schott 1.78472 25.76
SFL56 Schott 1.7847 26.078312
SF56A Schott 1.7847 26.08
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