C17-55 by Corning

Standard Unknown Environmentally Friendly

C17-55 by Corning is a standard optical glass. It transmits from 0.30 to 1.80 µm with an nd of 1.617605 and a Vd of 55.123455. It has low thermal expansion (CTE of 6.2×10⁻⁶/K).

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.3–1.8 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.3–1.8 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.300–1.800 µm
Optical Properties
Refractive Index (nd) 1.617605
Abbe Number (Vd) 55.123455
Dispersion Formula Schott
Wavelength Range 0.3 — 1.8 µm
$$n(\lambda) = \sqrt{2.56899 - 0.00835938\,\lambda^2 + 0.0172621\,\lambda^{-2} - 5.85617 \times 10^{-5}\,\lambda^{-4} + 4.84961 \times 10^{-5}\,\lambda^{-6} - 2.14825 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 6.2
TCE 100/300°C (10-6/K) 7.3
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) 3.56
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
SSK4A Schott 1.61765 55.141867
SSK4 Sumita 1.61765 55.1
K-SSK4 Sumita 1.61765 55.1
BACED4 Hoya 1.617652 55.15751
BSM24 Ohara 1.617646 55.049782
H-ZK8 CDGM 1.61405 55.116283
BACD9 Hoya 1.614047 55.118097
SK9 Sumita 1.61405 55.1
S-BSM9 Ohara 1.614047 54.990097
BSM9 Ohara 1.614047 54.971106
Similar Glasses (Corning)
Glass Manufacturer nd Vd Compare
C13-56 Corning 1.613498 56.417725
C23-57 Corning 1.622801 56.922436
C07-57 Corning 1.607504 56.610495
C23-53 Corning 1.622502 53.14721
C39-56 Corning 1.638505 55.504447
C23-58 Corning 1.623004 58.102071
C13-58 Corning 1.612693 58.570371
C09-59 Corning 1.608756 59.036803
C42-58 Corning 1.642502 58.061633
C51-56 Corning 1.651124 55.895803
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