C42-58 by Corning

Standard Unknown Environmentally Friendly

C42-58 by Corning is a standard optical glass. It transmits from 0.32 to 1.80 µm with an nd of 1.642502 and a Vd of 58.061633.

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) 1.642502
Abbe Number (Vd) 58.061633
Dispersion Formula Schott
Wavelength Range 0.32 — 1.8 µm
$$n(\lambda) = \sqrt{2.65117 - 0.00993274\,\lambda^2 + 0.0169336\,\lambda^{-2} + 4.01068 \times 10^{-5}\,\lambda^{-4} + 3.27022 \times 10^{-5}\,\lambda^{-6} - 1.50306 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) —
TCE 100/300°C (10-6/K) 8.6
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) 3.82
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
LAK6 Sumita 1.6425 58.1
K-LaK6 Sumita 1.6425 58.1
LAKN6 Schott 1.642499 57.962061
LAC6 Hoya 1.642498 57.959359
S-BSM36 Ohara 1.642495 58.369399
BSM36 Ohara 1.642495 58.369399
S-BSM93 Ohara 1.640998 56.927542
BSM93 Ohara 1.640998 56.927542
LACL1 Hoya 1.640851 56.835319
K-LaK7 Sumita 1.6516 58.3
Similar Glasses (Corning)
Glass Manufacturer nd Vd Compare
C52-58 Corning 1.6516 58.511488
C41-60 Corning 1.640495 60.130957
C57-57 Corning 1.657503 57.198059
C51-56 Corning 1.651124 55.895803
C39-56 Corning 1.638505 55.504447
C23-58 Corning 1.623004 58.102071
C23-57 Corning 1.622801 56.922436
C20-60 Corning 1.620406 60.332956
C13-58 Corning 1.612693 58.570371
C13-56 Corning 1.613498 56.417725
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