SK14 by Schott

Obsolete Unknown Environmentally Dangerous

SK14 by Schott is an obsolete optical glass. It transmits from 0.31 to 2.33 µm with an nd of 1.60311 and a Vd of 60.596819. It has low thermal expansion (CTE of 6.0×10⁻⁶/K), below average chemical resistance, low relative cost, and dangerous environmental properties.

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.31–2.325 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.31–2.325 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.310–2.325 µm
Optical Properties
Refractive Index (nd) 1.60311
Abbe Number (Vd) 60.596819
Dispersion Formula Sellmeier
Wavelength Range 0.31 — 2.325 µm
$$n(\lambda) = \sqrt{1 + \frac{0.936155\,\lambda^2}{\lambda^2 - 0.00461717} + \frac{0.594052\,\lambda^2}{\lambda^2 - 0.0168859} + \frac{1.04375\,\lambda^2}{\lambda^2 - 103.736}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 6.0
TCE 100/300°C (10-6/K) 7.3
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[1.58 \times 10^{-6} + 2(1.22 \times 10^{-8})\,\Delta T + 3(-8.04 \times 10^{-12})\,\Delta T^2 + \frac{4.46 \times 10^{-7} + 2(5.22 \times 10^{-10})\,\Delta T}{\lambda - 0.15}\right] \Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
Density (g/cm³) 3.44
Relative Cost 2.55
Mechanical Properties
Young's Modulus (GPa) —
Poisson's Ratio —
Knoop Hardness (kgf/mm²) —
Chemical Resistance
Climatic Resistance 4
Stain Resistance 2
Acid Resistance 51
Alkali Resistance 2
Phosphate Resistance 2
Notes

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Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
H-ZK14 CDGM 1.60311 60.603787
S-BSM14 Ohara 1.603112 60.64108
BSM51Y Ohara 1.603109 60.651225
BACD14 Hoya 1.60311 60.7
K-SK14 Sumita 1.60311 60.7
SK14 Sumita 1.60311 60.7
BSM14 Ohara 1.603112 60.704896
FCD600 Hoya 1.5941 60.47
K-SK7 Sumita 1.60729 59.5
SK7 Sumita 1.60729 59.5
Similar Glasses (Schott)
Glass Manufacturer nd Vd Compare
N-SK14 Schott 1.60311 60.6
SK7 Schott 1.60729 59.459272
SK3 Schott 1.60881 58.921505
P-SK58A Schott 1.58913 61.15
SK5 Schott 1.58913 61.266803
N-SK5HTi Schott 1.58913 61.27
N-SK5 Schott 1.58913 61.27
N-SK4 Schott 1.61272 58.63
SK4 Schott 1.61272 58.629829
SK16 Schott 1.62041 60.323649
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