BAFN6 by Schott

Obsolete Unknown Environmentally Dangerous

BAFN6 by Schott is an obsolete optical glass. It transmits from 0.35 to 2.33 µm with an nd of 1.589 and a Vd of 48.45. It has medium thermal expansion (CTE of 7.8×10⁻⁶/K), good chemical resistance, and dangerous environmental properties.

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.35–2.325 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.35–2.325 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.350–2.325 µm
Optical Properties
Refractive Index (nd) 1.589
Abbe Number (Vd) 48.45
Dispersion Formula Sellmeier
Wavelength Range 0.35 — 2.325 µm
$$n(\lambda) = \sqrt{1 + \frac{1.36719\,\lambda^2}{\lambda^2 - 0.00882821} + \frac{0.10908\,\lambda^2}{\lambda^2 - 0.0438732} + \frac{1.02108\,\lambda^2}{\lambda^2 - 113.586}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 7.8
TCE 100/300°C (10-6/K) 8.5
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[1.34 \times 10^{-6} + 2(1.34 \times 10^{-8})\,\Delta T + 3(-5.5 \times 10^{-11})\,\Delta T^2 + \frac{4.95 \times 10^{-7} + 2(3.62 \times 10^{-10})\,\Delta T}{\lambda - 0.265}\right] \Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
Density (g/cm³) 3.17
Relative Cost —
Mechanical Properties
Young's Modulus (GPa) 77.0
Poisson's Ratio 0.23
Knoop Hardness (kgf/mm²) 540.0
Chemical Resistance
Climatic Resistance 2
Stain Resistance 0
Acid Resistance 2
Alkali Resistance 2
Phosphate Resistance 1
Notes

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Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
BAF6 Hoya 1.589003 48.543984
K-SKLD310(M) Sumita 1.60132 49.0
H-BAF4 CDGM 1.58267 46.597786
K-SKLD310 Sumita 1.6042 48.9
BAF4 CDGM 1.582712 46.505886
BAF3 Sumita 1.58267 46.5
BAF3 Hoya 1.58267 46.462286
S-BAM3 Ohara 1.582673 46.423175
BAM3 Ohara 1.582673 46.423092
LAF50 Hoya 1.60199 50.21
Similar Glasses (Schott)
Glass Manufacturer nd Vd Compare
KZFS6 Schott 1.591965 48.509579
N-BAF3 Schott 1.58272 46.64
KZFSN9 Schott 1.598557 46.903842
BAF3 Schott 1.58267 46.469988
BALF50 Schott 1.588931 51.371228
N-BAF52 Schott 1.60863 46.6
BAF52 Schott 1.608589 46.44241
SSKN8 Schott 1.61772 49.771451
N-SSK8 Schott 1.61773 49.83
SSK3 Schott 1.614837 51.1603
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