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Morgan Advanced Ceramics AL 995™ Mac-A995W Aluminum Oxide Ceramic
Categories: Ceramic; Oxide; Aluminum Oxide
Material Notes: High purity alumina ceramic of 99.5% Al2O3 content. Its purity, chemical resistance and high temperature capabilities prove invaluable for semiconductor processing applications.

Prime Features:

  • Electrically and dimensionally stable at high temperatures
  • Low particle generation
  • Dense, non-porous and vacuum tight
  • Excellent dielectric properties
  • Accepts moly-manganese metallizing for high temperature brazing of vacuum tight assemblies
  • Excellent chemical and abrasion resistance
Typical applications:
  • Wafer processing and handling devices
  • Components for semiconductor process ambers, spluttering targets, fixtures, etc. Laser devices for wide range of industrial, medical and defence duties
  • Power tubes for klystron and x-ray equipment
  • Flow meters and pressure sensors
Production Capabilities:
  • Isostatic and dry pressing, green machining
  • CNC grinding and lapping to very tight tolerances
  • Metallising of components
  • High temperature brazing of assemblies
  • Prototype, batch and volume production

Information provided by Morgan Advanced Materials
Key Words: Mac-A995W
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
Bulk Density 3.86 g/cc
Open Porosity 0.00 %fully dense, % nominal, apparent
 
Mechanical PropertiesOriginal ValueComments
Hardness, Rockwell HR45N 81
Flexural Strength 310 MPa
Compressive Strength 2070 MPa
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity 2.20e+9 ohm-cm
@Temperature 500 °C
 2.00e+11 ohm-cm
@Temperature 300 °C
 >= 1.00e+14 ohm-cm
@Temperature 25.0 °C
Dielectric Constant 9.3
@Frequency 1e+9 Hz,
Temperature 25.0 °C
 9.37
@Frequency 8.50e+9 Hz,
Temperature 25.0 °C
 9.58
@Frequency 1e+7 Hz,
Temperature 25.0 °C
 9.61
@Frequency 8.50e+9 Hz,
Temperature 300 °C
 9.82
@Frequency 8.50e+9 Hz,
Temperature 500 °C
 9.92
@Frequency 1e+7 Hz,
Temperature 300 °C
 10.2
@Frequency 1e+7 Hz,
Temperature 500 °C
Dielectric Strength 800 V/mil
Dissipation Factor 0.000030
@Frequency 1e+7 Hz,
Temperature 25.0 °C
 0.000090
@Frequency 8.50e+9 Hz,
Temperature 25.0 °C
 0.000090
@Frequency 1e+7 Hz,
Temperature 300 °C		tan d
 0.00014
@Frequency 8.50e+9 Hz,
Temperature 300 °C
 0.00014
@Frequency 1e+9 Hz,
Temperature 25.0 °C
 0.00025
@Frequency 8.50e+9 Hz,
Temperature 500 °C
 0.00040
@Frequency 1e+7 Hz,
Temperature 500 °C
 
Thermal PropertiesOriginal ValueComments
CTE, linear 6.90 µm/m-°C
@Temperature 25.0 - 200 °C
 7.80 µm/m-°C
@Temperature 200 - 400 °C
 8.30 µm/m-°C
@Temperature 400 - 600 °C
 9.00 µm/m-°C
@Temperature 600 - 800 °C
 9.40 µm/m-°C
@Temperature 800 - 1000 °C
Thermal Conductivity 29.3 W/m-K
Maximum Service Temperature, Air 1725 °Cno load
 
Component Elements PropertiesOriginal ValueComments
Al2O3 99.5 %
 
Descriptive Properties
Colorwhite

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