KF6 by Sumita

Obsolete Very Rare Environmentally Dangerous

KF6 by Sumita is an obsolete optical glass with a very rare melt frequency. It transmits from 0.30 to 2.00 µm with an nd of 1.51742 and a Vd of 52.2. 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: 0.300–2.000 µm
Optical Properties
Refractive Index (nd) 1.51742
Abbe Number (Vd) 52.2
Dispersion Formula Schott
Wavelength Range 0.27 — 2.0 µm
$$n(\lambda) = \sqrt{2.26497 - 0.0083248\,\lambda^2 + 0.0132836\,\lambda^{-2} + 0.000225748\,\lambda^{-4} + 2.21421 \times 10^{-6}\,\lambda^{-6} + 6.80286 \times 10^{-7}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) —
TCE 100/300°C (10-6/K) 10.2
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) 2.66
Relative Cost —
Mechanical Properties
Young's Modulus (GPa) —
Poisson's Ratio —
Knoop Hardness (kgf/mm²) —
Chemical Resistance
Climatic Resistance 2
Stain Resistance —
Acid Resistance 3
Alkali Resistance —
Phosphate Resistance —
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
KF6 Schott 1.517421 52.200088
CF6 Hoya 1.517419 52.154512
E-CF6 Hoya 1.51742 52.15
H-KF6 CDGM 1.51742 52.149249
NSL36 Ohara 1.517417 52.412251
S-NSL36 Ohara 1.517417 52.430903
SSL5 Ohara 1.521299 52.553447
SBF5 Hoya 1.521299 52.780677
ADP Generic Birefringent 1.523454 52.25678
N-KF9 Schott 1.52346 51.54
Similar Glasses (Sumita)
Glass Manufacturer nd Vd Compare
K-SKF6 Sumita 1.512 52.1
K-SKF6(M) Sumita 1.50847 52.6
KF5 Sumita 1.5231 50.9
KF8 Sumita 1.51118 50.9
KZF2 Sumita 1.52944 51.8
KF2 Sumita 1.5263 51.0
KF4 Sumita 1.53358 51.6
KF3 Sumita 1.51454 54.6
LLF6 Sumita 1.53172 48.9
BALF5 Sumita 1.54739 53.6
Compare Glasses
    Compare Selected