C48-34 by Corning

Standard Unknown Environmentally Friendly

C48-34 by Corning is a standard optical glass. It transmits from 0.32 to 1.80 µm with an nd of 1.647992 and a Vd of 33.943274. It has medium thermal expansion (CTE of 8.2×10⁻⁶/K).

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.32–1.8 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.32–1.8 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.320–1.800 µm
Optical Properties
Refractive Index (nd) 1.647992
Abbe Number (Vd) 33.943274
Dispersion Formula Schott
Wavelength Range 0.32 — 1.8 µm
$$n(\lambda) = \sqrt{2.63421 - 0.00789667\,\lambda^2 + 0.0277965\,\lambda^{-2} + 0.000137068\,\lambda^{-4} + 0.000122103\,\lambda^{-6} - 3.36448 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 8.2
TCE 100/300°C (10-6/K) 9.0
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) 3.86
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
SF2 Sumita 1.64769 33.9
H-ZF1A CDGM 1.64769 33.887993
SF2 Schott 1.64769 33.85
H-ZF1 CDGM 1.64769 33.840317
SF12 Schott 1.64831 33.841187
E-FD2 Hoya 1.64769 33.84
ZF1 CDGM 1.647693 33.836872
FD2 Hoya 1.647693 33.836872
N-SF2 Schott 1.64769 33.82
PBM22 Ohara 1.647689 33.802937
Similar Glasses (Corning)
Glass Manufacturer nd Vd Compare
C37-35 Corning 1.636493 35.322642
C67-33 Corning 1.666997 33.114648
C26-36 Corning 1.625903 35.60701
C72-32 Corning 1.672698 32.31788
C20-36 Corning 1.62001 36.30126
C51-39 Corning 1.650206 39.193419
C89-31 Corning 1.689004 31.210861
C55-40 Corning 1.6555 40.115717
C97-36 Corning 1.695989 36.517325
C04-38 Corning 1.603499 38.110538
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