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Schott ROBAXÂ® Glass Ceramic

Category	Ceramic , Glass , Glass Ceramic , Optical
Manufacturer	Schott North America
Trade Name
Port	Ningbo port,China
Trade Terms	FOB, CFR, CIF
Payment Terms	L/C, T/T, Western Union
Download PDF	Schott ROBAXÂ® Glass Ceramic.pdf
Price	EMAIL US sales@lookpolymers.com
	Online Service lookpolymers 27660005

Material Notes:

ROBAXÂ® is a highly transparent glass-ceramic having virtually zero thermal expansion and sufficient mechanical resistance required for all standard applications. It is produced in flat, rolled sheets.As a result of its extremely low thermal expansion, ROBAXÂ® can be subjected to extreme temperature differences. Even when used in high temperature conditions, ROBAXÂ® maintains excellent stability of form. ROBAXÂ® can be further processed mechanically using all of the normal methods of glass processing.Applications: ROBAXÂ® possesses a high degree of resistance against thermal stresses and chemical surface attacks. Its diverse range of applications include: chemical process sight glass, high temperature vision windows, heat insulators, commercial ovens/broilers, architectural and outdoor lighting, electronics and UV light wave blocking applications.Information provided by SCHOTT North America.

Physical Properties	Metric	English	Comments
Density	2.56 g/cc	0.0925 lb/inÂ³

Mechanical Properties	Metric	English	Comments
Modulus of Elasticity	92.0 GPa	13300 ksi
Poissons Ratio	0.25	0.25
Shear Modulus	36.8 GPa	5340 ksi	Calculated

Thermal Properties	Metric	English	Comments
CTE, linear	-0.300 - 0.300 Âµm/m-Â°C @Temperature 20.0 - 700 Â°C	-0.167 - 0.167 Âµin/in-Â°F @Temperature 68.0 - 1290 Â°F
Specific Heat Capacity	0.800 J/g-Â°C @Temperature 20.0 - 100 Â°C	0.191 BTU/lb-Â°F @Temperature 68.0 - 212 Â°F
Thermal Conductivity	1.60 W/m-K @Temperature 90.0 Â°C	11.1 BTU-in/hr-ftÂ²-Â°F @Temperature 194 Â°F
Maximum Service Temperature, Air	680 Â°C	1260 Â°F	100 to 10,000 hr, depends on temperature gradient
	760 Â°C	1400 Â°F	<100 hr, depends on temperature gradient

Optical Properties	Metric	English	Comments
Transmission, Visible	90 %	90 %	transparent; thickness not quantified

Electrical Properties	Metric	English
Volume Resistivity	>= 250000 ohm-cm @Temperature 350 Â°C	>= 250000 ohm-cm @Temperature 662 Â°F
	>= 6.30e+6 ohm-cm @Temperature 250 Â°C	>= 6.30e+6 ohm-cm @Temperature 482 Â°F
	1.00e+8 ohm-cm @Temperature 175 Â°C	1.00e+8 ohm-cm @Temperature 347 Â°F
Dielectric Constant	7.8	7.8
Dissipation Factor	0.019	0.019

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