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Goodfellow Leachable Ceramic (Silica, Zircon, Alumina)
Categories: Ceramic; Oxide; Silicon Oxide

Material Notes: SiO2 50/ZrSiO4 40/Al2O3 10

This form of ceramic is used in the precision foundry industry. The tubes and rods are incorporated into molds in the lost wax process. Using this technique, very fine tolerances on diameter can be obtained. The ceramic is leached away by the using sodium hydroxide solution once the metal has solidified. This leachable ceramic has a high porosity, does not have an organic binder, but does absorb water.

Information provided by Goodfellow.

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Physical PropertiesMetricEnglishComments
Density 2.10 g/cc0.0759 lb/in³
Water Absorption at Saturation 14 %14 %
Porosity 25 %25 %apparent
 
Thermal PropertiesMetricEnglishComments
CTE, linear 1.98 µm/m-°C
@Temperature 20.0 - 1000 °C
1.10 µin/in-°F
@Temperature 68.0 - 1830 °F
Maximum Service Temperature, Air 1050 °C1920 °F
 
Component Elements PropertiesMetricEnglishComments
Al2O3 10 %10 %
SiO2 50 %50 %
 
Descriptive Properties
Chemical Resistance - AlkalisPoor
Chemical Resistance - Concentrated AcidsFair
Chemical Resistance - Dilute AcidsFair
Chemical Resistance - HalogensFair
Chemical Resistance - MetalsGood

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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CGOODF167 / 941

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