712-3 Nextrema® Tinted Glass Ceramic/SCHOTT

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712-3 Nextrema® Tinted Glass Ceramic/SCHOTT
Categories:	Ceramic; Glass; Glass Ceramic
Material Notes:	The NEXTREMA® family of glass-ceramics combines the glossy appearance of glass with exceptional thermal, chemical, optical and mechanical properties such as: Very low coefficient of linear thermal expansion Excellent temperature and thermal shock resistance High transmission in infrared range and unique visible light transmission profiles with different specific grades Excellent chemical resistance High mechanical strength technical data presented herein are typical averages.
Vendors:	NEXTREMA® glass-ceramics from SCHOTT combines the benefits of technical glasses with properties of high temperature materials. General Brochure Visit our web site and view the NEXTREMA® movies. Click here to view all available suppliers 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	2.55 g/cc

Chemical Properties	Original Value	Comments
Acid Class, SR	2.0	DIN 12116
Alkali Class, AR	1.0	ISO 695

Mechanical Properties	Original Value	Comments
Knoop Microhardness	600	HK _{0.1 / 20}; ISO 9385
Modulus of Elasticity	92.0 GPa	ASTM C-1259
Flexural Strength	168 MPa	Bending s_bB; DIN EN 1288, Part 5, R45
Poissons Ratio	0.25	ASTM C-1259
Shear Modulus	36.8 GPa	Calculated by MatWeb

Electrical Properties	Original Value	Comments
Volume Resistivity	300000 ohm-cm @Temperature 350 °C	DIN 52326
	1.00e+7 ohm-cm @Temperature 250 °C	DIN 52326
Dielectric Constant	7.8 @Frequency 1e+6 Hz, Temperature 25.0 °C	DIN 53483
Dielectric Loss Index	0.020 @Frequency 1e+6 Hz, Temperature 25.0 °C	DIN 53483

Thermal Properties	Original Value	Comments
CTE, linear	-0.160 µm/m-°C @Temperature 20.0 - 300 °C
	0.380 µm/m-°C @Temperature 300 - 700 °C
Specific Heat Capacity	0.830 J/g-°C @Temperature 20.0 - 100 °C
Thermal Conductivity	1.70 W/m-K @Temperature 90.0 °C	DIN 51936, ASTM E 1461-01
Maximum Service Temperature, Air	560 °C @Time 1.80e+7 sec	Inhomogeneous Heating
	710 °C @Time 1.80e+7 sec	Homogeneous Heating
	750 °C @Time 3600 sec	Inhomogeneous Heating
	885 °C @Time 3600 sec	Homogeneous Heating

Optical Properties	Original Value	Comments
Transmission, Visible	0.00 % @Thickness 4.00 mm, Wavelength 500 nm
	3.0 % @Thickness 4.00 mm, Wavelength 600 nm
	18 % @Thickness 4.00 mm, Wavelength 700 nm
IR Transmittance	71 % @Thickness 4.00 mm, Wavelength 1000 nm
	75 % @Thickness 4.00 mm, Wavelength 1600 nm
	80 % @Thickness 4.00 mm, Wavelength 2500 nm
UV Transmittance	0.00 % @Thickness 4.00 mm

Descriptive Properties
Appearance	Transparent
Color	Dark Brown
Hydrolytic Resistance HGB	1	DIN ISO 719
t_k100(°C)	196	specific electric volume resistivity of 10⁸ O·cm
Thermal Shock Resistance (TSR)	800°C	Resists cold water without cracking

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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CSGS800 / 178424

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