Thermal Ceramics MRI D762 Pre-Fired Refractory Shapes

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Thermal Ceramics MRI D762 Pre-Fired Refractory Shapes
Categories:	Ceramic; Oxide; Aluminum Oxide
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. 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	2.516 g/cc
Porosity	19 %	Apparent

Mechanical Properties	Original Value	Comments
Modulus of Rupture	1.25 ksi

Thermal Properties	Original Value	Comments
CTE, linear	3.30 µin/in-°F @Temperature 20.0 °C
Maximum Service Temperature, Air	2910 °F

Component Elements Properties	Original Value	Comments
Al2O3	74 %
Alkalis	0.50 %
CaO+MgO	0.20 %
Fe2O3	0.90 %
SiO2	23 %
TiO2	2.0 %

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CTHERM141 / 2461

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