C48-46 by Corning

Standard Unknown Environmentally Friendly

C48-46 by Corning is a standard optical glass. It transmits from 0.32 to 1.80 µm with an nd of 1.647747 and a Vd of 46.227993. It has low thermal expansion (CTE of 6.0×10⁻⁶/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) 1.647747
Abbe Number (Vd) 46.227993
Dispersion Formula Schott
Wavelength Range 0.32 — 1.8 µm
$$n(\lambda) = \sqrt{2.65716 - 0.0111327\,\lambda^2 + 0.0201591\,\lambda^{-2} + 0.000342337\,\lambda^{-4} + 1.91406 \times 10^{-5}\,\lambda^{-6} + 3.44273 \times 10^{-7}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 6.0
TCE 100/300°C (10-6/K) 6.8
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) 3.65
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
N-BAF51 Schott 1.65224 44.96
BAF51 Schott 1.652242 44.930457
BAF23 Hoya 1.652238 44.922169
BAF12 Hoya 1.639302 45.070071
BAF12 Sumita 1.6393 45.0
K-BaF9 Sumita 1.64328 47.8
BAF9 Sumita 1.64328 47.8
ATF4 Hoya 1.653757 44.723072
BAM9 Ohara 1.643279 47.850606
BAM12 Ohara 1.6393 44.878032
Similar Glasses (Corning)
Glass Manufacturer nd Vd Compare
C70-47 Corning 1.670005 47.112037
C24-47 Corning 1.624 46.940278
C67-48 Corning 1.666698 48.434395
C38-42 Corning 1.637752 42.433862
C16-44 Corning 1.616002 44.416477
C58-51 Corning 1.658503 51.012014
C13-44 Corning 1.613394 44.386543
C06-44 Corning 1.605608 43.942859
C55-40 Corning 1.6555 40.115717
C90-50 Corning 1.689009 49.625392
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