Schott SF4 Glass

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Schott SF4 Glass
Categories:	Ceramic; Glass
Material Notes:	Information Provided by SCHOTT North America, Inc.
Key Words:	755276.479
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	4.79 g/cc

Chemical Properties	Original Value	Comments
Acid Class, SR	4.3
Alkali Class, AR	2.3
Stain Resistance Class, FR	2.0

Mechanical Properties	Original Value	Comments
Knoop Microhardness	390	.1/20
Modulus of Elasticity	56.0 GPa
Poissons Ratio	0.241
Shear Modulus	23.0 GPa	calculated

Thermal Properties	Original Value	Comments
CTE, linear	8.00 µm/m-°C @Temperature -30.0 - 70.0 °C
	8.90 µm/m-°C @Temperature 20.0 - 300 °C
Specific Heat Capacity	0.410 J/g-°C
Thermal Conductivity	0.650 W/m-K
Transformation Temperature, Tg	420 °C
Softening Point	552 °C	Viscosity 10^7.6 dPa s
Annealing Point	415 °C	Viscosity 10^13.0 dPa s

Optical Properties	Original Value	Comments
Refractive Index	1.7552 @Wavelength 587.6 nm	n_d
	1.76167 @Wavelength 546.1 nm	n_e
Abbe Number	27.37	ve
	27.58	vd
Optical Dispersion	0.027383	nf - nc
	0.027829	nf' - nc'
Transmission, Visible	86.2 % @Thickness 10.0 mm, Wavelength 380 nm
	96.3 % @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	84.7 % @Thickness 10.0 mm, Wavelength 2500 nm
	99.6 % @Thickness 10.0 mm, Wavelength 1530 nm
UV Transmittance	9.0 % @Thickness 10.0 mm, Wavelength 350 nm
	60.1 % @Thickness 10.0 mm, Wavelength 365 nm
	72.7 % @Thickness 10.0 mm, Wavelength 370 nm

Descriptive Properties
B	1
Climatic Resistance Test CR	1
HG	1
K (10^-6mm²/N)	1.36
Phosphate Resistance PR	3.3

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CSGS087 / 93421

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