SF10W by Sumita

Obsolete Very Rare Environmentally Dangerous

SF10W by Sumita is an obsolete optical glass with a very rare melt frequency. It transmits from 0.37 to 2.00 µm with an nd of 1.72825 and a Vd of 28.3. It has excellent chemical resistance and dangerous environmental properties.

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.27–2.0 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.27–2.0 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.370–2.000 µm
Optical Properties
Refractive Index (nd) 1.72825
Abbe Number (Vd) 28.3
Dispersion Formula Schott
Wavelength Range 0.27 — 2.0 µm
$$n(\lambda) = \sqrt{2.86667 - 0.00557956\,\lambda^2 + 0.0427875\,\lambda^{-2} - 0.00145366\,\lambda^{-4} + 0.000492051\,\lambda^{-6} - 2.27626 \times 10^{-5}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) —
TCE 100/300°C (10-6/K) 8.4
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[0 + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right] \Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
Density (g/cm³) 4.27
Relative Cost —
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 —
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
H-ZF4AGT CDGM 1.72825 28.318797
H-ZF4A CDGM 1.72825 28.318797
FD10 Hoya 1.728252 28.319563
E-FD10 Hoya 1.72825 28.32
E-FD10L Hoya 1.72825 28.32
ZF4 CDGM 1.728251 28.3239
D28-28 Corning 1.728304 28.397796
SF10 Schott 1.72825 28.41
S-TIH10 Ohara 1.72825 28.460599
PBH10 Ohara 1.728249 28.4623
Similar Glasses (Sumita)
Glass Manufacturer nd Vd Compare
SF10 Sumita 1.72825 28.3
CD120 Sumita 1.7225 29.2
K-CD120 Sumita 1.7225 29.2
SF18 Sumita 1.72151 29.3
SFN1 Sumita 1.72022 29.3
SF3 Sumita 1.74 28.2
SF13 Sumita 1.74077 27.7
SF1 Sumita 1.71736 29.5
K-SFLD1 Sumita 1.71736 29.5
K-CD120(M) Sumita 1.71466 29.6
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