Thermal Ceramics MRI SC-84V Pre-Fired Refractory Shapes

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Thermal Ceramics MRI SC-84V Pre-Fired Refractory Shapes
Categories:	Ceramic
Material Notes:	MRI pressed fired shapes are used in a variety of alloy melt-pour systems. The pressed manufacture process meets the tight tolerance specifications required by end users. Precise size dies and detailed product inspection provide the user with a high-quality, dimensionally accurate refractory shape. MRI SC-84V 84% silicon carbide composition with high thermal shock and oxidation resistance ideal for carbon saggers and kiln furniture. Features: Variety of available compositions in high alumina and fused silica. Extreme tight tolerance capabilities Low gas permeability to ferrous alloys Good non-wetting characteristics Excellent mechanical strength Proven performance in super alloy, investment Applications: Standard size crucibles and liners for induction melting and investment casting Tundish nozzles - meet user demands on pour stream and pour speeds Gas atomized nozzles - for custom-designed atomizing powder metal systems Information provided by Thermal Ceramics Data has not been recently verified. Please contact manufacturer for current information.
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Physical Properties	Original Value	Comments

Bulk Density	2.404 g/cc
Porosity	20 %	Apparent

Mechanical Properties	Original Value	Comments
Modulus of Rupture	3.60 ksi

Thermal Properties	Original Value	Comments
CTE, linear	4.10 µin/in-°F @Temperature 20.0 °C
Thermal Conductivity	90.0 BTU-in/hr-ft²-°F @Temperature 1090 °C	ASTM C417
Maximum Service Temperature, Air	2725 °F

Component Elements Properties	Original Value	Comments
Al2O3	5.1 %
Alkalis	0.70 %
CaO+MgO	0.30 %
Fe2O3	0.10 %
SiC	84 %
SiO2	8.9 %
TiO2	0.10 %

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