Zircar Ceramics APA-3 Alumina Paper

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Zircar Ceramics APA-3 Alumina Paper
Categories:	Ceramic; Oxide; Aluminum Oxide
Material Notes:	ZIRCAR Alumina Papers are uniform structures made principally of alumina fiber. APA-3 is a thin uniformly rigidized sheet of alumina fiber and binder. Applications include thermal insulation in low mass furnaces and thermal process systems operating to 1650°C (3002°F) high temperature gaskets and seals, separator in multifoil vacuum furnace insulation systems, expansion joint insulation, backup thermal insulation in molten metal troughs, furnaces and thermal process systems operating to high temperatures, and parting agent and barrier layer in brazing, heat-treating and metal forming processes. Information provided by Zircar Ceramics.
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Physical Properties	Metric	English	Comments

Density	0.700 g/cc	0.0253 lb/in³	at 0.06 MPa
Thickness	305 microns	12.0 mil	at 0 pressure
	305 microns	12.0 mil	at 0.06 MPa

Mechanical Properties	Metric	English	Comments
Tear Strength	1.40 kN/m	8.00 pli	Parallel to Thickness, width

Thermal Properties	Metric	English	Comments
Thermal Conductivity	0.190 W/m-K @Temperature 538 °C	1.32 BTU-in/hr-ft²-°F @Temperature 1000 °F
	0.340 W/m-K @Temperature 1370 °C	2.36 BTU-in/hr-ft²-°F @Temperature 2500 °F
Maximum Service Temperature, Air	1650 °C	3000 °F

Component Elements Properties	Metric	English	Comments
Al2O3	96 %	96 %
SiO2	4.0 %	4.0 %

Descriptive Properties
Color	White
Form	Rigid
Type of Binder	Alumina
Weight	213.4 g/m²

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