B18-65 by Corning

Obsolete Unknown Environmentally Friendly

B18-65 by Corning is an obsolete optical glass. It transmits from 0.33 to 2.33 µm with an nd of 1.518199 and a Vd of 65.115452.

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.334–2.325 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.334–2.325 µm
Abbe Number Calculator
Transmission vs Wavelength

No transmission data available.

Transmission Calculator
Valid wavelength range: 0.334–2.325 µm
Optical Properties
Refractive Index (nd) 1.518199
Abbe Number (Vd) 65.115452
Dispersion Formula Schott
Wavelength Range 0.334 — 2.325 µm
$$n(\lambda) = \sqrt{2.27572 - 0.00977722\,\lambda^2 + 0.0110557\,\lambda^{-2} + 1.9101 \times 10^{-5}\,\lambda^{-4} + 1.94913 \times 10^{-5}\,\lambda^{-6} - 1.01554 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) —
TCE 100/300°C (10-6/K) —
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) —
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
PC2 Hoya 1.51821 65.160509
PK2 Schott 1.518211 65.054286
BSL22 Ohara 1.518206 65.039654
UBK7 Schott 1.516801 64.289727
BSL7Y Ohara 1.51633 64.243778
BSC7 Hoya 1.5168 64.2
H-K9L* CDGM 1.5168 64.198732
H-K9LGT CDGM 1.5168 64.198732
H-K9L CDGM 1.5168 64.198732
H-K9LAGT CDGM 1.5168 64.198695
Similar Glasses (Corning)
Glass Manufacturer nd Vd Compare
B16-64 Corning 1.516804 64.224234
B10-63 Corning 1.509992 63.551713
B19-61 Corning 1.519061 61.386004
A88-66 Corning 1.487502 65.807152
B18-60 Corning 1.518201 60.291781
B11-60 Corning 1.510999 60.383147
B52-67 Corning 1.552198 67.059229
B23-59 Corning 1.522996 59.479482
B39-59 Corning 1.539505 59.712433
A87-70 Corning 1.487248 70.500557
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