Pyrotek Pyrocast AR FINE Castable Refractory

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Pyrotek Pyrocast AR FINE Castable Refractory
Categories:	Ceramic; Oxide; Silicon Oxide
Material Notes:	Pyrocast AR Fine is a fine-grain fused silica castable, offering similar insulation properties, yet lighter weight that the Pyrocast AR formulation. Pyrocast AR Fine is suited for thin wall castings, or cast shapes with less than one inch cross section thickness. Parts cast form Pyrocast AR Fine are heat-treated as part of the manufacturing process to remove free and combined water. Applications Thimbles Hot-top table sections Transfer and stub troughs Launder linings Filter boxes Sheet ingot spouts Control pins Furnace tubes Advantages Dimensionally stable Thermal shock resistant Easily cleaned Extremely durable Smooth cast surface Preheating unnecessary Non-wetting Information provided by Pyrotek.
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Physical Properties	Original Value	Comments

Density	1.86 - 1.89 g/cc

Mechanical Properties	Original Value	Comments
Modulus of Rupture	0.00850 GPa @Temperature 725 °C
	0.00615 GPa @Treatment Temp. 650 °C
Compressive Strength	43.2 MPa	cured at 650°C

Thermal Properties	Original Value	Comments
CTE, linear	0.320 µm/m-°C @Temperature 650 °C
Thermal Conductivity	0.590 W/m-K @Temperature 400 °C
	0.710 W/m-K @Temperature 550 °C
	0.820 W/m-K @Temperature 700 °C
Shrinkage	0.40 % @Temperature 815 °C	Linear

Processing Properties	Original Value	Comments
Processing Temperature	760 °C	Exception: Not recommended for use in continuous casting applications.

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CPYRO175 / 1892

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