Pyrotek Pyrocast AR-S Castable Refractory

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Pyrotek Pyrocast AR-S Castable Refractory
Categories:	Ceramic; Oxide; Silicon Oxide
Material Notes:	Pyrocast AR-S is a low cement, fused silica, castable refractory which exhibits excellent resistance to thermal shock. It is inert to liquid aluminum and its alloys. It is a high strength material offering outstanding resistance to erosion and mechanical damage. Applications Transfer & stub troughs Launder linings Filter boxes Sheet ingot spouts Furnace tubes Cross-Feeders 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	Metric	English	Comments

Density	1.99 g/cc	0.0719 lb/in³
Open Porosity	20 - 24 %	20 - 24 %

Mechanical Properties	Metric	English	Comments
Modulus of Rupture	0.0120 GPa @Treatment Temp. 540 °C	1.74 ksi @Treatment Temp. 1000 °F
Compressive Strength	48.0 MPa	6960 psi	cured at 540°C

Thermal Properties	Metric	English	Comments
CTE, linear	1.80 µm/m-°C @Temperature 649 °C	1.00 µin/in-°F @Temperature 1200 °F
Thermal Conductivity	1.06 W/m-K @Temperature 260 °C	7.36 BTU-in/hr-ft²-°F @Temperature 500 °F
	1.10 W/m-K @Temperature 540 °C	7.63 BTU-in/hr-ft²-°F @Temperature 1000 °F
Maximum Service Temperature, Air	1100 °C	2010 °F
Shrinkage	-0.300 % @Temperature 540 °C	-0.300 % @Temperature 1000 °F

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CPYRO195 / 1912

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