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Rulon Bearings

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Materion Durox® UHP 99.9% Al2O3  (discontinued **)
Categories: Ceramic; Oxide; Aluminum Oxide

Material Notes:

Information supplied by Materion.

Key Words: Al2O3, Alumina, Aluminum Oxide
Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesOriginal ValueComments
Density 3.95 g/cc
Water Absorption 0.00 %
Grain Size 1.0 µm
 
Mechanical PropertiesOriginal ValueComments
Hardness, Rockwell HR45N 85
Tensile Strength, Ultimate 40.0 ksi
Modulus of Elasticity 375 GPa
Flexural Strength 55.0 ksi
Compressive Strength 350 ksi
Poissons Ratio 0.22
Fracture Toughness 5.00 MPa-m½KIC
Shear Modulus 154 GPaCalculated
 
Electrical PropertiesOriginal ValueComments
Electrical Resistivity >= 1.00e+15 ohm-cm
Dielectric Constant 9.6
@Frequency 1e+10 Hz
 9.7
@Frequency 1e+6 Hz
Dielectric Strength 220 V/mil
@Thickness 6.35 mm
AC
Dissipation Factor 0.00010
@Frequency 1e+6 Hz
 0.00010
@Frequency 1e+10 Hz
 
Thermal PropertiesOriginal ValueComments
CTE, linear 8.00 µm/m-°C
@Temperature 20.0 - 100 °C
Specific Heat Capacity 0.840 J/g-°C
Thermal Conductivity 35.0 W/m-K
@Temperature 20.0 °C
 
Component Elements PropertiesOriginal ValueComments
Al2O3 99.9 %
 
Descriptive Properties
ColorWhite

**
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