P-SK57Q1 by Schott

Preferred Unknown Precision Molding Environmentally Friendly

P-SK57Q1 by Schott is a preferred optical glass. It transmits from 0.32 to 2.50 µm with an nd of 1.586 and a Vd of 59.5. It has medium thermal expansion (CTE of 7.23×10⁻⁶/K), below average chemical resistance, and precision molding compatibility.

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.31–2.5 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.31–2.5 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.320–2.500 µm
Optical Properties
Refractive Index (nd) 1.586
Abbe Number (Vd) 59.5
Dispersion Formula Sellmeier
Wavelength Range 0.31 — 2.5 µm
$$n(\lambda) = \sqrt{1 + \frac{1.30536\,\lambda^2}{\lambda^2 - 0.00736409} + \frac{0.171434\,\lambda^2}{\lambda^2 - 0.0255786} + \frac{1.10117\,\lambda^2}{\lambda^2 - 106.726}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 7.23
TCE 100/300°C (10-6/K) 8.9
Thermal Conductivity (W/mK) 1.01
Heat Capacity (J/gK) 0.76
Physical Properties
Density (g/cm³) 3.012
Relative Cost —
Mechanical Properties
Young's Modulus (GPa) 92.66
Poisson's Ratio 0.25
Knoop Hardness (kgf/mm²) 535.0
Chemical Resistance
Climatic Resistance 4
Stain Resistance 3
Acid Resistance 52
Alkali Resistance 2
Phosphate Resistance 3
Notes

suitable for precision molding

Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
D-ZK2L-25 CDGM 1.58625 59.524868
CSK12 Sumita 1.5865 59.6
K-CSK120 Sumita 1.587 59.6
CSK120 Sumita 1.587 59.6
D-ZK2L CDGM 1.587 59.600321
L-BAL43 Ohara 1.585729 59.69698
L-BAL42P Ohara 1.58593 59.248294
K-SKLD120(M) Sumita 1.58401 59.5
K-SKLD120 Sumita 1.5868 59.8
K-CSK120(M) Sumita 1.58445 59.2
Similar Glasses (Schott)
Glass Manufacturer nd Vd Compare
P-SK57 Schott 1.587 59.6
SK12 Schott 1.583131 59.448822
SK13 Schott 1.591809 58.300621
P-SK58A Schott 1.58913 61.15
SK5 Schott 1.58913 61.266803
N-SK5 Schott 1.58913 61.27
N-SK5HTi Schott 1.58913 61.27
SK14 Schott 1.60311 60.596819
N-SK14 Schott 1.60311 60.6
N-BAK1 Schott 1.5725 57.55
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