BASF13 by Schott

Obsolete Unknown Environmentally Dangerous

BASF13 by Schott is an obsolete optical glass. It transmits from 0.38 to 2.33 µm with an nd of 1.69761 and a Vd of 38.570097. It has medium thermal expansion (CTE of 7.1×10⁻⁶/K) and dangerous environmental properties.

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.334–2.325 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.334–2.325 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.380–2.325 µm
Optical Properties
Refractive Index (nd) 1.69761
Abbe Number (Vd) 38.570097
Dispersion Formula Sellmeier
Wavelength Range 0.334 — 2.325 µm
$$n(\lambda) = \sqrt{1 + \frac{1.61152\,\lambda^2}{\lambda^2 - 0.0100755} + \frac{0.192653\,\lambda^2}{\lambda^2 - 0.0500719} + \frac{1.09087\,\lambda^2}{\lambda^2 - 110.403}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 7.1
TCE 100/300°C (10-6/K) 8.2
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[2.82 \times 10^{-6} + 2(1.07 \times 10^{-8})\,\Delta T + 3(-9.18 \times 10^{-11})\,\Delta T^2 + \frac{7.01 \times 10^{-7} + 2(7.34 \times 10^{-10})\,\Delta T}{\lambda - 0.278}\right] \Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
Density (g/cm³) 3.97
Relative Cost —
Mechanical Properties
Young's Modulus (GPa) —
Poisson's Ratio —
Knoop Hardness (kgf/mm²) —
Chemical Resistance
Climatic Resistance —
Stain Resistance —
Acid Resistance —
Alkali Resistance —
Phosphate Resistance —
Notes

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Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
BAH71 Ohara 1.701998 40.097173
BAFD15 Hoya 1.701999 40.195943
K-ZnSF8(M) Sumita 1.71143 38.9
C97-36 Corning 1.695989 36.517325
K-ZnSF8 Sumita 1.7143 38.9
ZNSF8 Sumita 1.7143 38.9
BASF7 Sumita 1.70154 41.1
D01-41 Corning 1.701805 41.110216
H-ZBAF20 CDGM 1.70154 41.148468
BAFD7 Hoya 1.70154 41.15
Similar Glasses (Schott)
Glass Manufacturer nd Vd Compare
N-BASF64 Schott 1.704 39.38
BASF64A Schott 1.704 39.384429
KZFS12 Schott 1.696 36.29
BASF52 Schott 1.70181 41.010234
KZFS7A Schott 1.68064 37.389991
BASF51 Schott 1.723728 38.111094
BASF12 Schott 1.669979 39.200523
N-KZFS8 Schott 1.72047 34.7
KZFS8 Schott 1.72047 34.613955
N-BASF2 Schott 1.66446 36.0
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