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Rulon Bearings

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Goodfellow Silicon Nitride/Aluminum Nitride/Aluminum Oxide (Sialon)
Categories: Ceramic; Nitride

Material Notes: Sialon® is a solid solution of Silicon Nitride with Aluminum Oxide and Aluminum Nitride. It exhibits high strength at high temperatures, is hard, tough and wear resistant. It is chemically inert and thermal shock resistant. These properties all make Sialon® applied for foundry use, including use as containers for molten metals. Sialon® is non-wetting for most non-ferrous metals up to 1000°C. It has found use as thermocouple sheaths and its high wear resistance lends itself to components such as extrusion tools drawing dies and plugs. Sialon® can be machined as for Tungsten Carbide and the surface finish improved by diamond grinding.

Information provided by Goodfellow.

Key Words: Syalon®
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Physical PropertiesOriginal ValueComments
Density 3.24 g/cc
Porosity 0.010 %Apparent
 
Mechanical PropertiesOriginal ValueComments
Hardness, Vickers 1650 - 1800kgf/mm²
Tensile Modulus 280 - 300 GPa
Compressive Strength >= 3500 MPa
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity 1.00e+12 - 1.00e+17 ohm-cm
 
Thermal PropertiesOriginal ValueComments
CTE, linear 3.30 - 3.70 µin/in-°F
@Temperature 20.0 - 1000 °C
Specific Heat Capacity 0.620 - 0.710 J/g-°C
@Temperature 25.0 °C
Thermal Conductivity 20.0 W/m-K
@Temperature 20.0 °C
Maximum Service Temperature, Air 1000 °Ccontinuous
 
Descriptive Properties
Chemical Resistance - AlkalisFair
Chemical Resistance - Concentrated AcidsGood
Chemical Resistance - Dilute AcidsGood

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CGOODF249 / 197412

Master Bond adhesives

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