Zircar Refractory Composites ZIRCAL-95 Refractory Board

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Zircar Refractory Composites ZIRCAL-95 Refractory Board
Categories:	Ceramic
Material Notes:	Type ZIRCAL-95 Refractory Board is produced from a combination of natural organic fibers and inert reinforcing fillers in a high density calcium silicate hydrate matrix. Designed as a substitute for asbestos cement boards, ZIRCAL-95 is useful as structural and electrical insulation in applications with temperatures to 1100°C(2000°F). ZIRCAL-95`s surface is sanded smooth. It has a uniform consistency making it a useful source for custom machined insulating parts. Information provided by ZIRCAR Refractory Composites, Inc. (ZRCI)
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Physical Properties	Original Value	Comments

Density	1.40 g/cc

Mechanical Properties	Original Value	Comments
Modulus of Rupture	0.0180 GPa	parallel to thickness
Compressive Yield Strength	450 MPa	at 5% deformation, parallel to thickness

Electrical Properties	Original Value	Comments
Volume Resistivity	4.52e+12 ohm-cm	ASTM D257
Dielectric Strength	61.0 V/mil	ASTM D495
Arc Resistance	314 sec	ASTM D495

Thermal Properties	Original Value	Comments
CTE, linear	3.10 µm/m-°C @Temperature 20.0 - 700 °C
	5.50 µm/m-°C @Temperature 20.0 °C
Thermal Conductivity	0.270 W/m-K @Temperature 400 °C	parallel to thickness
	0.290 W/m-K @Temperature 600 °C	parallel to thickness
	0.310 W/m-K @Temperature 200 °C	parallel to thickness
Maximum Service Temperature, Air	1000 °C
Shrinkage	0.13 % @Temperature 650 °C, Time 43200 sec	Linear reheat (perpendicular to thickness)
	0.50 % @Temperature 1050 °C, Time 43200 sec	Linear reheat (perpendicular to thickness)

Component Elements Properties	Original Value	Comments
H2O, Water	1.0 %
Other	<= 4.0 %

Descriptive Properties
CaSiO₃, %	96

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CZRCI13 / 2876

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