BASF6 by Sumita

Obsolete Very Rare Environmentally Dangerous

BASF6 by Sumita is an obsolete optical glass with a very rare melt frequency. It transmits from 0.34 to 2.00 µm with an nd of 1.66755 and a Vd of 41.9. It has good 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: 0.340–2.000 µm
Optical Properties
Refractive Index (nd) 1.66755
Abbe Number (Vd) 41.9
Dispersion Formula Schott
Wavelength Range 0.27 — 2.0 µm
$$n(\lambda) = \sqrt{2.71337 - 0.00954474\,\lambda^2 + 0.0226869\,\lambda^{-2} + 0.000524196\,\lambda^{-4} + 1.88355 \times 10^{-5}\,\lambda^{-6} + 1.10902 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) —
TCE 100/300°C (10-6/K) 8.0
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) 3.88
Relative Cost —
Mechanical Properties
Young's Modulus (GPa) —
Poisson's Ratio —
Knoop Hardness (kgf/mm²) —
Chemical Resistance
Climatic Resistance 1
Stain Resistance —
Acid Resistance 3
Alkali Resistance —
Phosphate Resistance —
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
BAH26 Ohara 1.667551 41.927521
BASF6 Schott 1.667551 41.931404
BAFD6 Hoya 1.66755 41.933458
ZBAF17 CDGM 1.667554 41.957211
BASF57 Schott 1.651474 41.901823
C55-40 Corning 1.6555 40.115717
BAH32 Ohara 1.669979 39.279752
S-BAH32 Ohara 1.669979 39.271035
BASF12 Schott 1.669979 39.200523
ADF8 Hoya 1.686498 42.863902
Similar Glasses (Sumita)
Glass Manufacturer nd Vd Compare
BASF12 Sumita 1.66998 39.2
BAF13 Sumita 1.66892 45.0
BAFN1 Sumita 1.6825 44.5
K-BaFn1 Sumita 1.6825 44.5
BASF10 Sumita 1.65016 39.3
BASF4 Sumita 1.65128 38.3
K-BaSF4 Sumita 1.65128 38.3
BASF7 Sumita 1.70154 41.1
BAF12 Sumita 1.6393 45.0
K-PG395 Sumita 1.658 36.9
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