Pyrotek Pyrocast AR70 Low-Density Refractory Castable

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Pyrotek Pyrocast AR70 Low-Density Refractory Castable
Categories:	Ceramic; Oxide; Silicon Oxide
Material Notes:	Pyrocast AR70 refractory castable is a high-strength, low-density refractory well suited for specific aluminum foundry applications. Applications Sprue Bushings for low pressure die casting Intermediate tube linings for low pressure die casting Riser inserts for gravity permanent mold casting Advantages Low density High strength and erosion resistance Non-wetting to molten aluminum Information provided by Pyrotek.
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Physical Properties	Original Value	Comments

Density	1.12 g/cc

Mechanical Properties	Original Value	Comments
Modulus of Rupture	0.00690 GPa @Treatment Temp. 815 °C	fired and cooled

Thermal Properties	Original Value	Comments
Thermal Conductivity	0.300 W/m-K @Temperature 260 °C
	0.330 W/m-K @Temperature 538 °C
Maximum Service Temperature, Air	850 °C
Shrinkage	0.10 % @Temperature 760 °C

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CPYRO206 / 1923

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