Schott N-SK5 Glass

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Schott N-SK5 Glass
Categories:	Ceramic; Glass
Material Notes:	Information Provided by SCHOTT North America, Inc.
Key Words:	589613.330
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	3.30 g/cc

Chemical Properties	Original Value	Comments
Acid Class, SR	4.4
Alkali Class, AR	2.0
Stain Resistance Class, FR	1.0

Mechanical Properties	Original Value	Comments
Knoop Microhardness	590	.1/20
Modulus of Elasticity	84.0 GPa
Poissons Ratio	0.256
Shear Modulus	33.0 GPa	calculated

Thermal Properties	Original Value	Comments
CTE, linear	5.50 µm/m-°C @Temperature -30.0 - 70.0 °C
	6.50 µm/m-°C @Temperature 20.0 - 300 °C
Specific Heat Capacity	0.560 J/g-°C
Thermal Conductivity	0.990 W/m-K
Transformation Temperature, Tg	660 °C
Softening Point	791 °C	Viscosity 10^7.6 dPa s
Annealing Point	657 °C	Viscosity 10^13.0 dPa s

Optical Properties	Original Value	Comments
Refractive Index	1.58913 @Wavelength 587.6 nm	n_d
	1.59142 @Wavelength 546.1 nm	n_e
Abbe Number	61.02	ve
	61.27	vd
Optical Dispersion	0.009616	nf - nc
	0.009692	nf' - nc'
Transmission, Visible	98.4 % @Thickness 10.0 mm, Wavelength 380 nm
	99.3 % @Thickness 10.0 mm, Wavelength 405 nm
	99.6 % @Thickness 10.0 mm, Wavelength 460 nm
	99.8 % @Thickness 10.0 mm, Wavelength 580 nm
	99.8 % @Thickness 10.0 mm, Wavelength 700 nm
IR Transmittance	68 % @Thickness 10.0 mm, Wavelength 2500 nm
	99.2 % @Thickness 10.0 mm, Wavelength 1530 nm
UV Transmittance	3.0 % @Thickness 10.0 mm, Wavelength 280 nm
	21 % @Thickness 10.0 mm, Wavelength 300 nm
	80 % @Thickness 10.0 mm, Wavelength 334 nm
	97.6 % @Thickness 10.0 mm, Wavelength 370 nm

Descriptive Properties
B	1
Climatic Resistance Test CR	3
HG	3
K (10^-6mm²/N)	2.16
Phosphate Resistance PR	1.3

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