Aremco Ceramacast™ 646 Castable Ceramic

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Aremco Ceramacast™ 646 Castable Ceramic (discontinued **)
Categories:	Ceramic; Oxide; Silicon Oxide; Zirconium Oxide; Potting/Casting Ceramic
Material Notes:	See Ceramacast™ 646-N Hydraulic setting. Castable ceramic with high dielectric and physical strength. Used in the production of temperature probes, electrical feed-throughs, large heat treating fixtures, induction coils and crucibles. Supplied in powder form and are mixed with water to develop a strong hydraulic bond. Typically air set in 24 hours, then cured at 250 ºF for 2-4 hours to provide maximum electrical and mechanical properties.
Key Words:	zirconia, compounds, casting, silica, silicon, zirconium
Vendors:	Aremco’s Ceramacast casting and potting compounds represent the most expansive line of products based on aluminum oxide, aluminum nitride, magnesium oxide, silicon dioxide, silicon carbide, zirconium oxide, and zirconium silicate for applications to 3000°F (1760°C). Visit us today at Aremco.com or call 1 (845) 268-0039 to speak with an engineer. 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	Metric	English	Comments

Open Porosity	6.0 %	6.0 %

Mechanical Properties	Metric	English	Comments
Compressive Strength	79.0 MPa	11500 psi

Electrical Properties	Metric	English	Comments
Electrical Resistivity	1.00e+9 ohm-cm	1.00e+9 ohm-cm
Dielectric Strength	9.80 kV/mm	249 kV/in

Thermal Properties	Metric	English	Comments
CTE, linear	3.10 µm/m-°C @Temperature 20.0 °C	1.72 µin/in-°F @Temperature 68.0 °F
Thermal Conductivity	13.0 W/m-K	90.2 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air	1650 °C	3000 °F

Descriptive Properties
Color	Off White

**
Materials flagged as discontinued () are no longer part of the manufacturer’s standard product line according to our latest information. These materials may be available by special order, in distribution inventory, or reinstated as an active product. Data sheets from materials that are no longer available remain in MatWeb to assist users in finding replacement materials.

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