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Ensinger PEI

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Schott NG5 Neutral Density Filter
Categories: Ceramic; Glass; Optical; Filter
Material Notes: Ionically colored glass. Data provided by the manufacturer, Schott Glas Mainz..

Similar glasses include NG3, NG4, NG1, NG9, NG10, NG11, NG 12
Key Words: DIN N0.54
Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesOriginal ValueComments
Density 2.43 g/cc
 
Chemical PropertiesOriginal ValueComments
Acid Class, SR 3.2
Alkali Class, AR 2
Stain Resistance Class, FR 1
 
Thermal PropertiesOriginal ValueComments
CTE, linear 6.60 µm/m-°C
@Temperature -30.0 - 70.0 °C
 7.30 µm/m-°C
@Temperature 20.0 - 300 °C
Transformation Temperature, Tg 474 °C
 
Optical PropertiesOriginal ValueComments
Refractive Index 1.50
@Wavelength 587.6 nm		He
Transmission, Visible 51 - 55 %
@Wavelength 400 - 700 nm		Internal transmittance of 55-60% from 400-700 nm.
IR Transmittance 64 %
@Wavelength 2500 - 2600 nm		Internal transmittance of 70% at 2500-2600 nm.
UV Transmittance <= 1.0 %
@Wavelength 200 - 330 nm
 46 %
@Wavelength 390 nm		Internal transmittance of 50% at 390 nm
Reflection Coefficient, Visible (0-1) 0.92
@Wavelength 587.6 nm		Reflection Factor P

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