ZF6 by CDGM

Preferred Very Common Environmentally Dangerous

ZF6 by CDGM is a preferred optical glass with a very common melt frequency. It transmits from 0.35 to 2.40 µm with an nd of 1.755205 and a Vd of 27.546239. It has medium thermal expansion (CTE of 8.0×10⁻⁶/K), excellent chemical resistance, low relative cost, and dangerous environmental properties.

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.365–1.014 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.365–1.014 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.350–2.400 µm
Optical Properties
Refractive Index (nd) 1.755205
Abbe Number (Vd) 27.546239
Dispersion Formula Schott
Wavelength Range 0.365 — 1.014 µm
$$n(\lambda) = \sqrt{2.96286 - 0.0104078\,\lambda^2 + 0.0356441\,\lambda^{-2} + 0.00245699\,\lambda^{-4} - 0.000149616\,\lambda^{-6} + 1.77828 \times 10^{-5}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 8.0
TCE 100/300°C (10-6/K) 9.4
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[4.04 \times 10^{-6} + 2(2.33 \times 10^{-8})\,\Delta T + 3(-5.02 \times 10^{-11})\,\Delta T^2 + \frac{1.58 \times 10^{-6} + 2(9.46 \times 10^{-10})\,\Delta T}{\lambda - 0.26}\right] \Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
Density (g/cm³) 4.78
Relative Cost 1.7
Mechanical Properties
Young's Modulus (GPa) 54.72
Poisson's Ratio 0.216
Knoop Hardness (kgf/mm²) 380.0
Chemical Resistance
Climatic Resistance 1
Stain Resistance —
Acid Resistance —
Alkali Resistance —
Phosphate Resistance —
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
FD4 Hoya 1.755199 27.530242
E-FD4L Hoya 1.7552 27.53
E-FD4 Hoya 1.7552 27.53
SF4 Schott 1.7552 27.58
PBH4 Ohara 1.755199 27.512146
PBH4W Ohara 1.755199 27.512146
S-TIH4 Ohara 1.755199 27.512089
D56-27 Corning 1.755203 27.591377
SF4 Sumita 1.7552 27.5
K-SFLD4 Sumita 1.7552 27.5
Similar Glasses (CDGM)
Glass Manufacturer nd Vd Compare
H-ZF6 CDGM 1.7552 27.530047
H-ZF12 CDGM 1.76182 26.607986
ZF12 CDGM 1.761822 26.555686
H-ZF50 CDGM 1.74077 27.760063
ZF50 CDGM 1.74077 27.76788
ZF5 CDGM 1.739999 28.245048
H-ZF5 CDGM 1.74 28.295649
H-TF29 CDGM 1.77047 29.806014
H-ZF4AGT CDGM 1.72825 28.318797
H-ZF4A CDGM 1.72825 28.318797
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