ZBAF2 by CDGM

Obsolete Rare Environmentally Dangerous

ZBAF2 by CDGM is an obsolete optical glass with a rare melt frequency. It transmits from 0.33 to 2.40 µm with an nd of 1.639616 and a Vd of 48.230454. It has low thermal expansion (CTE of 6.1×10⁻⁶/K), moderate relative cost, and dangerous environmental properties.

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.365–0.7065 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.365–0.7065 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.330–2.400 µm
Optical Properties
Refractive Index (nd) 1.639616
Abbe Number (Vd) 48.230454
Dispersion Formula Schott
Wavelength Range 0.365 — 0.7065 µm
$$n(\lambda) = \sqrt{2.63241 - 0.00872518\,\lambda^2 + 0.0191243\,\lambda^{-2} + 0.000448593\,\lambda^{-4} - 1.74733 \times 10^{-5}\,\lambda^{-6} + 2.86011 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 6.1
TCE 100/300°C (10-6/K) 7.5
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) 3.83
Relative Cost 4.1
Mechanical Properties
Young's Modulus (GPa) 77.31
Poisson's Ratio 0.266
Knoop Hardness (kgf/mm²) 482.0
Chemical Resistance
Climatic Resistance —
Stain Resistance —
Acid Resistance —
Alkali Resistance —
Phosphate Resistance —
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
BAF9 Schott 1.643276 47.958224
BAF9 Hoya 1.643278 47.941673
BAM9 Ohara 1.643279 47.850606
BAF9 Sumita 1.64328 47.8
K-BaF9 Sumita 1.64328 47.8
C48-46 Corning 1.647747 46.227993
K-BaF8 Sumita 1.62374 47.1
BAF8 Sumita 1.62374 47.1
BAM8 Ohara 1.62374 47.09722
BAF8 Hoya 1.623739 47.054197
Similar Glasses (CDGM)
Glass Manufacturer nd Vd Compare
H-ZBAF50 CDGM 1.65844 50.852265
H-ZBAF16 CDGM 1.66672 48.421731
H-ZBAF3 CDGM 1.65691 51.12138
H-ZBAF52 CDGM 1.67003 47.19506
H-ZBAF5 CDGM 1.67103 47.288963
H-BAF6 CDGM 1.60801 46.202418
H-LAK67 CDGM 1.67 51.738482
H-TF3L CDGM 1.6134 44.107022
H-ZBAF1 CDGM 1.6223 53.170869
TF3 CDGM 1.612423 44.093486
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