Schott P-SF8 Glass

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Schott P-SF8 Glass
Categories:	Ceramic; Glass
Material Notes:	Suitable for precision molding Information Provided by SCHOTT North America, Inc.
Key Words:	689313.290
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Physical Properties	Original Value	Comments

Density	2.90 g/cc

Chemical Properties	Original Value	Comments
Acid Class, SR	1.0
Alkali Class, AR	1.2
Stain Resistance Class, FR	0.00

Mechanical Properties	Original Value	Comments
Knoop Microhardness	533	.1/20
Modulus of Elasticity	86.0 GPa
Poissons Ratio	0.253
Shear Modulus	34.0 GPa	calculated

Thermal Properties	Original Value	Comments
CTE, linear	9.40 µm/m-°C @Temperature -30.0 - 70.0 °C
	11.1 µm/m-°C @Temperature 20.0 - 300 °C
Specific Heat Capacity	0.790 J/g-°C
Thermal Conductivity	1.02 W/m-K
Transformation Temperature, Tg	524 °C
Softening Point	629 °C	Viscosity 10^7.6 dPa s
Annealing Point	531 °C	Viscosity 10^13.0 dPa s

Optical Properties	Original Value	Comments
Refractive Index	1.68893 @Wavelength 587.6 nm	n_d
	1.69414 @Wavelength 546.1 nm	n_e
Abbe Number	31.01	ve
	31.25	vd
Optical Dispersion	0.022046	nf - nc
	0.022386	nf' - nc'
Transmission, Visible	74.6 % @Thickness 10.0 mm, Wavelength 380 nm
	93.7 % @Thickness 10.0 mm, Wavelength 405 nm
	98 % @Thickness 10.0 mm, Wavelength 460 nm
	99.5 % @Thickness 10.0 mm, Wavelength 580 nm
	99.5 % @Thickness 10.0 mm, Wavelength 700 nm
IR Transmittance	72.7 % @Thickness 10.0 mm, Wavelength 2500 nm
	99.1 % @Thickness 10.0 mm, Wavelength 1530 nm
UV Transmittance	0.10 % @Thickness 10.0 mm, Wavelength 350 nm
	26 % @Thickness 10.0 mm, Wavelength 365 nm
	46.8 % @Thickness 10.0 mm, Wavelength 370 nm

Descriptive Properties
B	1
Climatic Resistance Test CR	1
HG	0
K (10^-6mm²/N)	2.73
Phosphate Resistance PR	1

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