SK14 by Sumita

Obsolete Very Rare Environmentally Dangerous

SK14 by Sumita is an obsolete optical glass with a very rare melt frequency. It transmits from 0.27 to 2.00 µm with an nd of 1.60311 and a Vd of 60.7. It has average chemical resistance and dangerous environmental properties.

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.27–2.0 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.27–2.0 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.270–2.000 µm
Optical Properties
Refractive Index (nd) 1.60311
Abbe Number (Vd) 60.7
Dispersion Formula Schott
Wavelength Range 0.27 — 2.0 µm
$$n(\lambda) = \sqrt{2.53081 - 0.0106127\,\lambda^2 + 0.0141445\,\lambda^{-2} + 0.000207373\,\lambda^{-4} + 4.81615 \times 10^{-6}\,\lambda^{-6} - 2.46538 \times 10^{-7}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) —
TCE 100/300°C (10-6/K) 8.0
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) 3.44
Relative Cost —
Mechanical Properties
Young's Modulus (GPa) —
Poisson's Ratio —
Knoop Hardness (kgf/mm²) —
Chemical Resistance
Climatic Resistance 2
Stain Resistance —
Acid Resistance 4
Alkali Resistance —
Phosphate Resistance —
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
BACD14 Hoya 1.60311 60.7
BSM14 Ohara 1.603112 60.704896
BSM51Y Ohara 1.603109 60.651225
S-BSM14 Ohara 1.603112 60.64108
H-ZK14 CDGM 1.60311 60.603787
N-SK14 Schott 1.60311 60.6
SK14 Schott 1.60311 60.596819
FCD600 Hoya 1.5941 60.47
BACD7 Hoya 1.607292 59.474776
H-ZK7 CDGM 1.613095 60.614383
Similar Glasses (Sumita)
Glass Manufacturer nd Vd Compare
K-SK14 Sumita 1.60311 60.7
K-SK7 Sumita 1.60729 59.5
SK7 Sumita 1.60729 59.5
P-SK50 Sumita 1.5938 61.4
P-SK100 Sumita 1.5917 60.7
K-PSK100 Sumita 1.5917 60.7
K-SKLD100 Sumita 1.5911 60.7
SK3 Sumita 1.60881 58.9
K-SKLD5 Sumita 1.58913 61.2
K-SK5 Sumita 1.58913 61.2
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