Schott N-LAF34 Glass

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Schott N-LAF34 Glass
Categories:	Ceramic; Glass
Material Notes:	Information Provided by SCHOTT North America, Inc.
Key Words:	773496.424
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	4.24 g/cc

Chemical Properties	Original Value	Comments
Acid Class, SR	51.3
Alkali Class, AR	1.0
Stain Resistance Class, FR	1.0

Mechanical Properties	Original Value	Comments
Knoop Microhardness	770	.1/20
Modulus of Elasticity	123 GPa
Poissons Ratio	0.292
Shear Modulus	48.0 GPa	calculated

Thermal Properties	Original Value	Comments
CTE, linear	5.80 µm/m-°C @Temperature -30.0 - 70.0 °C
	7.00 µm/m-°C @Temperature 20.0 - 300 °C
Specific Heat Capacity	0.800 J/g-°C
Thermal Conductivity	0.560 W/m-K
Transformation Temperature, Tg	668 °C
Softening Point	745 °C	Viscosity 10^7.6 dPa s
Annealing Point	659 °C	Viscosity 10^13.0 dPa s

Optical Properties	Original Value	Comments
Refractive Index	1.7725 @Wavelength 587.6 nm	n_d
	1.77621 @Wavelength 546.1 nm	n_e
Abbe Number	49.38	ve
	49.62	vd
Optical Dispersion	0.015568	nf - nc
	0.015719	nf' - nc'
Transmission, Visible	91.9 % @Thickness 10.0 mm, Wavelength 380 nm
	97.1 % @Thickness 10.0 mm, Wavelength 405 nm
	99.2 % @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	44.2 % @Thickness 10.0 mm, Wavelength 2500 nm
	99 % @Thickness 10.0 mm, Wavelength 1530 nm
UV Transmittance	1.0 % @Thickness 10.0 mm, Wavelength 320 nm
	25 % @Thickness 10.0 mm, Wavelength 334 nm
	63.4 % @Thickness 10.0 mm, Wavelength 350 nm
	86.7 % @Thickness 10.0 mm, Wavelength 370 nm

Descriptive Properties
B	0
Climatic Resistance Test CR	1
HG	2
K (10^-6mm²/N)	1.44
Phosphate Resistance PR	1

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CSGS057 / 93391

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