BALF6 by Sumita

Obsolete Very Rare Environmentally Dangerous

BALF6 by Sumita is an obsolete optical glass with a very rare melt frequency. It transmits from 0.31 to 2.00 µm with an nd of 1.58904 and a Vd of 53.2. It has good 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: 0.310–2.000 µm
Optical Properties
Refractive Index (nd) 1.58904
Abbe Number (Vd) 53.2
Dispersion Formula Schott
Wavelength Range 0.27 — 2.0 µm
$$n(\lambda) = \sqrt{2.48118 - 0.00936638\,\lambda^2 + 0.0152949\,\lambda^{-2} + 0.000333951\,\lambda^{-4} - 1.84592 \times 10^{-6}\,\lambda^{-6} + 5.77565 \times 10^{-7}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) —
TCE 100/300°C (10-6/K) 7.9
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) 3.3
Relative Cost —
Mechanical Properties
Young's Modulus (GPa) —
Poisson's Ratio —
Knoop Hardness (kgf/mm²) —
Chemical Resistance
Climatic Resistance 1
Stain Resistance —
Acid Resistance 2
Alkali Resistance —
Phosphate Resistance —
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
BAFL6 Hoya 1.589036 52.935166
BAFL4 Hoya 1.579572 53.705963
BALF4 Schott 1.579569 53.708241
H-BAF3 CDGM 1.57957 53.711637
N-BALF4 Schott 1.57956 53.87
BALF50 Schott 1.588931 51.371228
BAL7 Ohara 1.58875 51.179278
SSK51 Schott 1.603607 53.631714
ADC2 Hoya 1.596998 55.291198
BAFL3 Hoya 1.571348 52.982526
Similar Glasses (Sumita)
Glass Manufacturer nd Vd Compare
BALF3 Sumita 1.57135 53.0
K-CSK158(M) Sumita 1.58157 56.7
K-CSK158 Sumita 1.584 56.9
SK9 Sumita 1.61405 55.1
K-SSK1 Sumita 1.6172 54.0
SSK1 Sumita 1.6172 54.0
BAK4 Sumita 1.56883 56.0
K-SSK3 Sumita 1.61484 51.1
SSK3 Sumita 1.61484 51.1
K-BPG2 Sumita 1.5592 53.9
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