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Rulon Bearings

Morgan Advanced Ceramics Deranox™ 975 Alumina
Categories: Ceramic; Oxide; Aluminum Oxide

Material Notes: Fine grain alumina ceramic of 97.5% Al2O3 content. A high quality material, widely used for electrical and mechanical components that require thick film metallizing, as well as for dynamic duties where resistance to abrasion and chemical attack are essential.

Prime features:

  • Can be thick film metallized with noble metals
  • High volume resistivity
  • High mechanical strength
  • Excellent corrosion resistance
  • Excellent wear resistance
  • Low coefficient of friction
  • High thermal stability
  • High density, non-porous and vacuum tight
Typical applications:
  • Thick film metallized components, such as those with conductor and/or resistor networks, dielectric layers, solderable interfaces, etc
  • High-integrity devices for duties in the defense, aerospace, medical, laser and scientific instrument fields
  • Dynamic and static components in pumps and valves that handle corrosive or abrasive media.

Information provided by Morgan Advanced Ceramics.

Key Words: Al2O3; Aluminum Oxide
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Physical PropertiesMetricEnglishComments
Density 3.80 g/cc0.137 lb/in³
Porosity 0.00 %0.00 %Fully Dense
Particle Size 4.0 µm4.0 µmGrain Size
 
Mechanical PropertiesMetricEnglishComments
Hardness, Rockwell 45 N 8585
Vickers Microhardness 1515GPa @ Hv 0.5 kg
Modulus of Elasticity 340 GPa49300 ksi
Flexural Strength 350 MPa50800 psi3 point; ASTM C1161
Compressive Strength 2500 MPa363000 psi
Fracture Toughness 3.60 MPa-m½3.28 ksi-in½
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity  >= 1.00e+8 ohm-cm
@Temperature 600 °C
>= 1.00e+8 ohm-cm
@Temperature 1110 °F
 >= 1.00e+12 ohm-cm
@Temperature 300 °C
>= 1.00e+12 ohm-cm
@Temperature 572 °F
Dielectric Constant  9.5
@Frequency 9.40e+9 Hz
9.5
@Frequency 9.40e+9 Hz
 9.6
@Frequency 1e+6 Hz
9.6
@Frequency 1e+6 Hz
Dielectric Strength 20.0 kV/mm
@Thickness 2.00 - 3.00 mm
508 kV/in
@Thickness 0.0787 - 0.118 in
Dissipation Factor  0.00019
@Frequency 1e+6 Hz
0.00019
@Frequency 1e+6 Hz
 0.00043
@Frequency 9.40e+9 Hz
0.00043
@Frequency 9.40e+9 Hz
 
Thermal PropertiesMetricEnglishComments
CTE, linear 8.10 µm/m-°C
@Temperature 0.000 - 90.0 °C
4.50 µin/in-°F
@Temperature 32.0 - 194 °F
Specific Heat Capacity 0.880 J/g-°C0.210 BTU/lb-°F
Thermal Conductivity 24.0 W/m-K167 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air 1600 °C2910 °FNo Load
 
Component Elements PropertiesMetricEnglishComments
Al2O3 97.5 %97.5 %
 
Descriptive Properties
ColorWhite
Thermal Downshock190 σC

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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CMORG01 / 1644

Aluminum Castings

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