AF32ECO by Schott

Special Unknown Environmentally Dangerous

AF32ECO by Schott is a special optical glass. It transmits from 0.31 to 2.33 µm with an nd of 1.511531 and a Vd of 62.574031. It has low thermal expansion (CTE of 3.2×10⁻⁶/K) and dangerous environmental properties.

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.31–2.325 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.31–2.325 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.310–2.325 µm
Optical Properties
Refractive Index (nd) 1.511531
Abbe Number (Vd) 62.574031
Dispersion Formula Sellmeier
Wavelength Range 0.31 — 2.325 µm
$$n(\lambda) = \sqrt{1 + \frac{1.11333\,\lambda^2}{\lambda^2 - 0.00707494} + \frac{0.141527\,\lambda^2}{\lambda^2 - 0.0225359} + \frac{0.860743\,\lambda^2}{\lambda^2 - 90.1553}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 3.2
TCE 100/300°C (10-6/K) —
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) 2.43
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

Alkali free alumino borosilicate glass

Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
H-K5 CDGM 1.510072 63.364525
BK1 Sumita 1.51009 63.4
K-PBK40(M) Sumita 1.51497 63.3
BSC1 Hoya 1.510091 63.435118
B10-63 Corning 1.509992 63.551713
BSL1 Ohara 1.510091 63.635037
D-K59-25 CDGM 1.51698 63.4085
D-K59 CDGM 1.5176 63.499991
K-PBK40 Sumita 1.5176 63.5
P-BK40 Sumita 1.5176 63.5
Similar Glasses (Schott)
Glass Manufacturer nd Vd Compare
BK1 Schott 1.510091 63.464788
N-ZK7 Schott 1.50847 61.19
ZKN7 Schott 1.508469 61.187789
BK7G18 Schott 1.51975 63.58
N-ZK7A Schott 1.508054 61.04
BK8 Schott 1.520152 63.685744
P-BK7 Schott 1.5164 64.06
BK7HT Schott 1.51633 64.14348
BK7 Schott 1.5168 64.167336
N-BK7HTi Schott 1.5168 64.17
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