Schott N-SK2 Glass

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Schott N-SK2 Glass
Categories:	Ceramic; Glass
Material Notes:	Information Provided by SCHOTT North America, Inc.
Key Words:	607567.355
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.
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Physical Properties	Original Value	Comments

Density	3.55 g/cc

Chemical Properties	Original Value	Comments
Acid Class, SR	2.2
Alkali Class, AR	1.0
Stain Resistance Class, FR	0.00

Mechanical Properties	Original Value	Comments
Knoop Microhardness	550	.1/20
Modulus of Elasticity	78.0 GPa
Poissons Ratio	0.263
Shear Modulus	31.0 GPa	calculated

Thermal Properties	Original Value	Comments
CTE, linear	6.00 µm/m-°C @Temperature -30.0 - 70.0 °C
	7.10 µm/m-°C @Temperature 20.0 - 300 °C
Specific Heat Capacity	0.595 J/g-°C
Thermal Conductivity	0.776 W/m-K
Transformation Temperature, Tg	659 °C
Softening Point	823 °C	Viscosity 10^7.6 dPa s
Annealing Point	659 °C	Viscosity 10^13.0 dPa s

Optical Properties	Original Value	Comments
Refractive Index	1.60738 @Wavelength 587.6 nm	n_d
	1.60994 @Wavelength 546.1 nm	n_e
Abbe Number	56.37	ve
	56.65	vd
Optical Dispersion	0.010722	nf - nc
	0.010821	nf' - nc'
Transmission, Visible	98.8 % @Thickness 10.0 mm, Wavelength 380 nm
	99.3 % @Thickness 10.0 mm, Wavelength 460 nm
	99.4 % @Thickness 10.0 mm, Wavelength 405 nm
	99.8 % @Thickness 10.0 mm, Wavelength 580 nm
	99.8 % @Thickness 10.0 mm, Wavelength 700 nm
IR Transmittance	81.5 % @Thickness 10.0 mm, Wavelength 2500 nm
	99.5 % @Thickness 10.0 mm, Wavelength 1530 nm
UV Transmittance	2.0 % @Thickness 10.0 mm, Wavelength 290 nm
	10.2 % @Thickness 10.0 mm, Wavelength 300 nm
	75.2 % @Thickness 10.0 mm, Wavelength 334 nm
	97.6 % @Thickness 10.0 mm, Wavelength 370 nm

Descriptive Properties
B	0
Climatic Resistance Test CR	2
HG	2
K (10^-6mm²/N)	2.31
Phosphate Resistance PR	2.3

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CSGS017 / 93351

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