H-K10 by CDGM

Preferred Medium Environmentally Friendly

H-K10 by CDGM is a preferred optical glass with a medium melt frequency. It transmits from 0.32 to 2.40 µm with an nd of 1.51818 and a Vd of 58.949331. It has medium thermal expansion (CTE of 9.0×10⁻⁶/K), average chemical resistance, and moderate relative cost.

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.313–2.325 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.313–2.325 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.320–2.400 µm
Optical Properties
Refractive Index (nd) 1.51818
Abbe Number (Vd) 58.949331
Dispersion Formula Sellmeier
Wavelength Range 0.313 — 2.325 µm
$$n(\lambda) = \sqrt{1 + \frac{0.231761\,\lambda^2}{\lambda^2 - 0.0237841} + \frac{1.03994\,\lambda^2}{\lambda^2 - 0.00615271} + \frac{0.966967\,\lambda^2}{\lambda^2 - 117.74}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 9.0
TCE 100/300°C (10-6/K) 10.8
Thermal Conductivity (W/mK) 0.846
Heat Capacity (J/gK) 0.694
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[-3.97 \times 10^{-6} + 2(2.28 \times 10^{-8})\,\Delta T + 3(-5.39 \times 10^{-11})\,\Delta T^2 + \frac{4.17 \times 10^{-7} + 2(-3.71 \times 10^{-10})\,\Delta T}{\lambda - 0.254}\right] \Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
Density (g/cm³) 2.5
Relative Cost 3.6
Mechanical Properties
Young's Modulus (GPa) 69.71
Poisson's Ratio 0.22
Knoop Hardness (kgf/mm²) 456.0
Chemical Resistance
Climatic Resistance 3
Stain Resistance —
Acid Resistance —
Alkali Resistance —
Phosphate Resistance —
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
E-C3 Hoya 1.51823 58.96
C3 Hoya 1.518234 58.96082
NSL3 Ohara 1.518229 58.966406
K3 Schott 1.51823 58.976559
S-NSL3 Ohara 1.518229 58.902057
K3 Sumita 1.51823 59.0
C12 Hoya 1.523073 58.640203
B270 Schott 1.52308 58.571369
C5 Hoya 1.522488 59.447258
N-K5 Schott 1.52249 59.48
Similar Glasses (CDGM)
Glass Manufacturer nd Vd Compare
H-K51 CDGM 1.52307 58.639792
H-K50 CDGM 1.52249 59.480754
H-K11 CDGM 1.52638 60.15737
H-K7 CDGM 1.51478 60.634896
H-K6 CDGM 1.511125 60.478905
H-K8 CDGM 1.51602 56.794825
H-BAK1 CDGM 1.53028 60.466139
K4A CDGM 1.50802 61.052897
H-BAK2 CDGM 1.53996 59.724182
H-K1 CDGM 1.49967 62.071979
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