Schott AF 45 Thin Borosilicate Glass

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Schott AF 45 Thin Borosilicate Glass
Categories:	Ceramic; Glass; Optical; Oxide; Silicon Oxide
Material Notes:	AF 45 is an alkali-free modified borosilicate glass with a high content of BaO and Al2O3. AF 45, with its specific properties and large range of different thicknesses with tight tolerances, is exceptionally well suited for a number of applications including: liquid crystal displays, electroluminescent displays, CCD covers, hybrid circuits and solar cells. Due to a special down draw production process, AF 45 glass sheets have fire-polished surfaces; this glass type can be used without ground and polished surfaces. AF 45 offers excellent thermal resistance for high temperature applications up to approximately 600°C. Information provided by SCHOTT North America.
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Physical Properties	Original Value	Comments

Density	2.72 g/cc
Thickness	50.0 - 1100 microns

Mechanical Properties	Original Value	Comments
Hardness, Knoop	555	HK₁₀₀
Modulus of Elasticity	66.0 GPa
Poissons Ratio	0.235
Shear Modulus	26.7 GPa

Electrical Properties	Original Value	Comments
Volume Resistivity	1.60e+9 ohm-cm @Temperature 500 °C
	3.20e+11 ohm-cm @Temperature 350 °C
	6.00e+13 ohm-cm @Temperature 250 °C
Dielectric Constant	6.2 @Frequency 1e+6 Hz
Dissipation Factor	0.00090 @Frequency 1e+6 Hz

Thermal Properties	Original Value	Comments
CTE, linear	4.50 µm/m-°C @Temperature 20.0 - 300 °C
Thermal Conductivity	0.930 W/m-K
	1.04 W/m-K @Temperature 87.0 °C
	1.10 W/m-K @Temperature 127 °C
	1.13 W/m-K @Temperature 166 °C
Maximum Service Temperature, Air	600 °C
Transformation Temperature, Tg	662 °C
Softening Point	883 °C	10^7.6 dPa-s
Annealing Point	663 °C	10¹³ dPa-s
Strain Point	627 °C	10^14.5 dPa-s

Optical Properties	Original Value	Comments
Refractive Index	1.5255 @Wavelength 588 nm	n_d
	1.5275 @Wavelength 546 nm	n_e
Abbe Number	62.2	ν_e
Optical Dispersion	0.0084	n_F - n_C
Transmission, Visible	91.2 % @Thickness 1.10 mm

Descriptive Properties
Stress Optical Coefficient	3.2	(1.02x10^-12 m²/N

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to go back to viewing the property data in MatWeb's normal format.

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CSGT0000 / 1985

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