H-ZF4AGT by CDGM

Preferred Very Common Environmentally Friendly

H-ZF4AGT by CDGM is a preferred optical glass with a very common melt frequency. It transmits from 0.37 to 2.40 µm with an nd of 1.72825 and a Vd of 28.318797. It has medium thermal expansion (CTE of 9.3×10⁻⁶/K), excellent chemical resistance, and low relative cost.

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.365–2.325 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.365–2.325 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.370–2.400 µm
Optical Properties
Refractive Index (nd) 1.72825
Abbe Number (Vd) 28.318797
Dispersion Formula Sellmeier
Wavelength Range 0.365 — 2.325 µm
$$n(\lambda) = \sqrt{1 + \frac{1.67238\,\lambda^2}{\lambda^2 - 0.0133654} + \frac{1.34134\,\lambda^2}{\lambda^2 - 122.464} + \frac{0.204305\,\lambda^2}{\lambda^2 - 0.0641192}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 9.3
TCE 100/300°C (10-6/K) 11.2
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[-5.36 \times 10^{-6} + 2(1.47 \times 10^{-8})\,\Delta T + 3(-3.86 \times 10^{-11})\,\Delta T^2 + \frac{1.02 \times 10^{-6} + 2(8.24 \times 10^{-10})\,\Delta T}{\lambda - 0.276}\right] \Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
Density (g/cm³) 3.05
Relative Cost 2.9
Mechanical Properties
Young's Modulus (GPa) 87.74
Poisson's Ratio 0.255
Knoop Hardness (kgf/mm²) 524.0
Chemical Resistance
Climatic Resistance 1
Stain Resistance —
Acid Resistance —
Alkali Resistance —
Phosphate Resistance —
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
FD10 Hoya 1.728252 28.319563
E-FD10L Hoya 1.72825 28.32
E-FD10 Hoya 1.72825 28.32
SF10W Sumita 1.72825 28.3
SF10 Sumita 1.72825 28.3
D28-28 Corning 1.728304 28.397796
SF10 Schott 1.72825 28.41
S-TIH10 Ohara 1.72825 28.460599
PBH10 Ohara 1.728249 28.4623
N-SF10 Schott 1.72828 28.53
Similar Glasses (CDGM)
Glass Manufacturer nd Vd Compare
H-ZF4A CDGM 1.72825 28.318797
ZF4 CDGM 1.728251 28.3239
H-ZF5 CDGM 1.74 28.295649
ZF5 CDGM 1.739999 28.245048
ZF50 CDGM 1.74077 27.76788
H-ZF50 CDGM 1.74077 27.760063
H-ZF3 CDGM 1.71736 29.49911
ZF3 CDGM 1.717365 29.510385
ZF6 CDGM 1.755205 27.546239
H-ZF6 CDGM 1.7552 27.530047
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