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Schott NG12 Neutral Density Filter

Category Ceramic , Glass , Filter , Optical
Manufacturer Schott Glas Mainz
Trade Name
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
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Material Notes:
Ionically colored glass. Data provided by the manufacturer, Schott Glas Mainz..Similar glasses include NG3, NG4, NG5, NG9, NG10, NG11, NG 1
Physical Properties Metric English Comments
Density 2.34 g/cc
0.0845 lb/in³
Thermal Properties Metric English Comments
CTE, linear 5.90 µm/m-°C

@Temperature -30.0 - 70.0 °C
 3.28 µin/in-°F

@Temperature -22.0 - 158 °F
6.40 µm/m-°C

@Temperature 20.0 - 300 °C
 3.56 µin/in-°F

@Temperature 68.0 - 572 °F
Transformation Temperature, Tg 460 °C
860 °F
Optical Properties Metric English Comments
Refractive Index 1.48

@Wavelength 1014 nm
 1.48

@Wavelength 1014 nm
 Hg
1.49

@Wavelength 587.6 nm
 1.49

@Wavelength 587.6 nm
 He
1.50

@Wavelength 404.7 nm
 1.50

@Wavelength 404.7 nm
 Hg
Transmission, Visible 89 %

@Wavelength 460 - 700 nm
 89 %

@Wavelength 460 - 700 nm
 Internal transmittance of 95-96% from 430-700 nm.
IR Transmittance 86 %

@Wavelength 1400 - 2300 nm
 86 %

@Wavelength 1400 - 2300 nm
 Internal transmittance of 92-93% from 1400-2300 nm.
UV Transmittance <= 1.0 %

@Wavelength 200 - 310 nm
 <= 1.0 %

@Wavelength 200 - 310 nm
86 %

@Wavelength 390 nm
 86 %

@Wavelength 390 nm
 Internal transmittance of 93% at 390 nm
Reflection Coefficient, Visible (0-1) 0.93
0.93
Chemical Properties Metric English Comments
Acid Class, SR 51.4
51.4
Alkali Class, AR 2
2
Stain Resistance Class, FR 4
4
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