B18-60 by Corning

Standard Unknown Environmentally Friendly

B18-60 by Corning is a standard optical glass. It transmits from 0.29 to 1.80 µm with an nd of 1.518201 and a Vd of 60.291781. It has low thermal expansion (CTE of 6.2×10⁻⁶/K).

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.29–1.8 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.29–1.8 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.290–1.800 µm
Optical Properties
Refractive Index (nd) 1.518201
Abbe Number (Vd) 60.291781
Dispersion Formula Schott
Wavelength Range 0.29 — 1.8 µm
$$n(\lambda) = \sqrt{2.27293 - 0.00934454\,\lambda^2 + 0.0118261\,\lambda^{-2} + 7.96052 \times 10^{-5}\,\lambda^{-4} + 1.38289 \times 10^{-5}\,\lambda^{-6} - 4.95269 \times 10^{-7}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 6.2
TCE 100/300°C (10-6/K) 7.8
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) 2.56
Relative Cost —
Mechanical Properties
Young's Modulus (GPa) —
Poisson's Ratio —
Knoop Hardness (kgf/mm²) —
Chemical Resistance
Climatic Resistance —
Stain Resistance —
Acid Resistance —
Alkali Resistance —
Phosphate Resistance —
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
BALK3 Sumita 1.51835 60.3
BALKN3 Schott 1.518489 60.259571
BACL3 Hoya 1.518351 60.396486
H-K7 CDGM 1.51478 60.634896
UK50 Schott 1.522571 60.383109
K50 Schott 1.522572 60.179756
C40 Hoya 1.523 60.4016
S-NSL5 Ohara 1.522494 59.835417
NSL5 Ohara 1.522494 59.790926
K5 Sumita 1.52249 59.6
Similar Glasses (Corning)
Glass Manufacturer nd Vd Compare
B11-60 Corning 1.510999 60.383147
B23-59 Corning 1.522996 59.479482
B19-61 Corning 1.519061 61.386004
B39-59 Corning 1.539505 59.712433
B10-63 Corning 1.509992 63.551713
B16-64 Corning 1.516804 64.224234
B18-65 Corning 1.518199 65.115452
B64-61 Corning 1.564005 60.964853
A88-66 Corning 1.487502 65.807152
B72-57 Corning 1.572498 57.494511
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