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Elmet Technologies

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Morgan Advanced Ceramics Deranox™ 970 Mac-A970R Aluminum Oxide Ceramic
Categories: Ceramic; Oxide; Aluminum Oxide

Material Notes: High-quality alumina ceramic of 97.0% Al2O3 content. This material is an excellent electrical insulator that can be metallized to facilitate high-temperature brazing of assemblies.

Prime Features:

  • Readily accepts metallizing with moly-manganese
  • Very high volume resistivity
  • Low loss, constant high dielectric
  • High density, non-porous and vacuum tight
  • Resists abrasive wear and chemical attack
Typical Applications: Metallized ceramic components used in high-integrity applications, including:
  • High-vacuum systems
  • Laser equipment (gas, solid-state and waveguide)
  • X-ray tubes and electron microscopes
  • Microwave windows
  • Insulators in medical and scientific equipment
Production Capabilities:
  • Complex pressed and machined components
  • Grinding, lapping polishing to precise limits
  • Moly-manganese metallizing
  • Brazed assemblies

Information provided by Morgan Advanced Materials

Key Words: Mac-A970R
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Physical PropertiesOriginal ValueComments
Density 3.74 g/ccfired
Open Porosity 0.00 %fully dense, % nominal, apparent
Grain Size 14 µm
 
Mechanical PropertiesOriginal ValueComments
Hardness, Vickers 12.8
@Load 0.500 kg
[GPa]
Modulus of Elasticity 330 GPa
@Temperature 20.0 °C
Young's
Flexural Strength 280 MPa
@Temperature 20.0 °C
3-point
Compressive Strength 2000 MPa
Fracture Toughness 3.50 MPa-m½
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity >= 1.00e+8 ohm-cm
@Temperature 600 °C
 >= 1.00e+12 ohm-cm
@Temperature 300 °C
 >= 1.00e+15 ohm-cm
@Temperature 20.0 °C
Dielectric Constant 9.1
@Frequency 9.40e+9 Hz
 9.2
@Frequency 1e+6 Hz
Dielectric Strength 30.6 kV/mm
Dissipation Factor 0.00041
@Frequency 1e+6 Hz
tan d
 0.00067
@Frequency 9.40e+9 Hz
tan d
 0.00101
@Frequency 9.40e+9 Hz
tan d
 
Thermal PropertiesOriginal ValueComments
CTE, linear 8.10 µm/m-°C
@Temperature 0.000 - 800 °C
Specific Heat Capacity 0.880 J/g-°C
Thermal Conductivity 24.0 W/m-K
@Temperature 20.0 °C
Maximum Service Temperature, Air 1550 °Cno load
 
Component Elements PropertiesOriginal ValueComments
Al2O3 97 %
 
Descriptive Properties
Colorwhite
Thermal Downshock150 sC

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 go back to viewing the property data in MatWeb's normal format.

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Morgan Advanced Ceramics Deranox™ 975 Mac-A975R Aluminum Oxide Ceramic
Morgan Advanced Ceramics Deranox™ 975 Alumina

CMORF5027 / 200265

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