H-ZF13GT by CDGM

Preferred Very Common Environmentally Friendly

H-ZF13GT by CDGM is a preferred optical glass with a very common melt frequency. It transmits from 0.36 to 2.40 µm with an nd of 1.78472 and a Vd of 25.720045. It has medium thermal expansion (CTE of 8.6×10⁻⁶/K), excellent chemical resistance, and moderate relative cost.

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.4047–2.325 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.4047–2.325 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.360–2.400 µm
Optical Properties
Refractive Index (nd) 1.78472
Abbe Number (Vd) 25.720045
Dispersion Formula Sellmeier
Wavelength Range 0.4047 — 2.325 µm
$$n(\lambda) = \sqrt{1 + \frac{1.73522\,\lambda^2}{\lambda^2 - 0.0131088} + \frac{0.316277\,\lambda^2}{\lambda^2 - 0.0621422} + \frac{2.16385\,\lambda^2}{\lambda^2 - 178.846}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 8.6
TCE 100/300°C (10-6/K) 10.6
Thermal Conductivity (W/mK) 0.841
Heat Capacity (J/gK) 0.619
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[-5.4 \times 10^{-6} + 2(1.34 \times 10^{-8})\,\Delta T + 3(-3.56 \times 10^{-11})\,\Delta T^2 + \frac{1.01 \times 10^{-6} + 2(1.25 \times 10^{-9})\,\Delta T}{\lambda - 0.291}\right] \Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
Density (g/cm³) 3.25
Relative Cost 4.6
Mechanical Properties
Young's Modulus (GPa) 91.96
Poisson's Ratio 0.251
Knoop Hardness (kgf/mm²) 544.0
Chemical Resistance
Climatic Resistance 1
Stain Resistance —
Acid Resistance —
Alkali Resistance —
Phosphate Resistance —
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
FD110 Hoya 1.78472 25.72
PBH11W Ohara 1.784718 25.712726
PBH11 Ohara 1.784718 25.712726
FD11 Hoya 1.784715 25.704276
SF11 Sumita 1.78472 25.7
SF11W Sumita 1.78472 25.7
S-TIH11 Ohara 1.784723 25.683446
SF11 Schott 1.78472 25.76
N-SF11 Schott 1.78472 25.68
TIH11 Ohara 1.784723 25.677885
Similar Glasses (CDGM)
Glass Manufacturer nd Vd Compare
H-ZF13 CDGM 1.78472 25.720045
ZF13 CDGM 1.784724 25.754051
ZF51 CDGM 1.784701 26.075871
ZF7LGT CDGM 1.80519 25.471232
ZF7L CDGM 1.80519 25.471232
ZF7LTT CDGM 1.80519 25.471232
H-ZF7LA CDGM 1.80518 25.456256
H-ZF7LAGT CDGM 1.80518 25.456256
ZF7 CDGM 1.806277 25.380144
ZF12 CDGM 1.761822 26.555686
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