SF10 by Schott

Preferred Unknown Environmentally Dangerous

SF10 by Schott is a preferred optical glass. It transmits from 0.38 to 2.50 µm with an nd of 1.72825 and a Vd of 28.41. It has medium thermal expansion (CTE of 7.5×10⁻⁶/K), excellent chemical resistance, low relative cost, and dangerous environmental properties.

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.38–2.5 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.38–2.5 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.380–2.500 µm
Optical Properties
Refractive Index (nd) 1.72825
Abbe Number (Vd) 28.41
Dispersion Formula Sellmeier
Wavelength Range 0.38 — 2.5 µm
$$n(\lambda) = \sqrt{1 + \frac{1.61626\,\lambda^2}{\lambda^2 - 0.0127535} + \frac{0.259229\,\lambda^2}{\lambda^2 - 0.0581984} + \frac{1.07762\,\lambda^2}{\lambda^2 - 116.608}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 7.5
TCE 100/300°C (10-6/K) 8.4
Thermal Conductivity (W/mK) 0.74
Heat Capacity (J/gK) 0.465
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[5.31 \times 10^{-6} + 2(1.59 \times 10^{-8})\,\Delta T + 3(-4.07 \times 10^{-11})\,\Delta T^2 + \frac{1.28 \times 10^{-6} + 2(1.32 \times 10^{-9})\,\Delta T}{\lambda - 0.27}\right] \Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
Density (g/cm³) 4.28
Relative Cost 1.9
Mechanical Properties
Young's Modulus (GPa) 64.0
Poisson's Ratio 0.23
Knoop Hardness (kgf/mm²) 430.0
Chemical Resistance
Climatic Resistance 1
Stain Resistance 0
Acid Resistance 1
Alkali Resistance 1
Phosphate Resistance 2
Notes

lead containing glass type

Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
D28-28 Corning 1.728304 28.397796
S-TIH10 Ohara 1.72825 28.460599
PBH10 Ohara 1.728249 28.4623
ZF4 CDGM 1.728251 28.3239
E-FD10 Hoya 1.72825 28.32
E-FD10L Hoya 1.72825 28.32
FD10 Hoya 1.728252 28.319563
H-ZF4A CDGM 1.72825 28.318797
H-ZF4AGT CDGM 1.72825 28.318797
SF10 Sumita 1.72825 28.3
Similar Glasses (Schott)
Glass Manufacturer nd Vd Compare
N-SF10 Schott 1.72828 28.53
SF53 Schott 1.728301 28.68667
P-SF69 Schott 1.7225 29.23
SF18 Schott 1.72151 29.245495
SF3 Schott 1.74 28.2
SF54 Schott 1.7408 28.090813
SF1 Schott 1.71736 29.51
SF13 Schott 1.740771 27.59998
N-SF1 Schott 1.71736 29.62
SF63 Schott 1.7484 27.713565
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