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Elmet Technologies

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
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 PropertiesMetricEnglishComments
Density 3.74 g/cc0.135 lb/in³fired
Open Porosity 0.00 %0.00 %fully dense, % nominal, apparent
Grain Size 14 µm14 µm
 
Mechanical PropertiesMetricEnglishComments
Hardness, Vickers 12.8
@Load 0.500 kg
12.8
@Load 1.10 lb
[GPa]
Modulus of Elasticity 330 GPa
@Temperature 20.0 °C
47900 ksi
@Temperature 68.0 °F
Young's
Flexural Strength 280 MPa
@Temperature 20.0 °C
40600 psi
@Temperature 68.0 °F
3-point
Compressive Strength 2000 MPa290000 psi
Fracture Toughness 3.50 MPa-m½3.19 ksi-in½
 
Electrical PropertiesMetricEnglishComments
Volume 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
 >= 1.00e+15 ohm-cm
@Temperature 20.0 °C
>= 1.00e+15 ohm-cm
@Temperature 68.0 °F
Dielectric Constant  9.1
@Frequency 9.40e+9 Hz
9.1
@Frequency 9.40e+9 Hz
 9.2
@Frequency 1e+6 Hz
9.2
@Frequency 1e+6 Hz
Dielectric Strength 30.6 kV/mm777 kV/in
Dissipation Factor  0.00041
@Frequency 1e+6 Hz
0.00041
@Frequency 1e+6 Hz
tan d
 0.00067
@Frequency 9.40e+9 Hz
0.00067
@Frequency 9.40e+9 Hz
tan d
 0.00101
@Frequency 9.40e+9 Hz
0.00101
@Frequency 9.40e+9 Hz
tan d
 
Thermal PropertiesMetricEnglishComments
CTE, linear 8.10 µm/m-°C
@Temperature 0.000 - 800 °C
4.50 µin/in-°F
@Temperature 32.0 - 1470 °F
Specific Heat Capacity 0.880 J/g-°C0.210 BTU/lb-°F
Thermal Conductivity 24.0 W/m-K
@Temperature 20.0 °C
167 BTU-in/hr-ft²-°F
@Temperature 68.0 °F
Maximum Service Temperature, Air 1550 °C2820 °Fno load
 
Component Elements PropertiesMetricEnglishComments
Al2O3 97 %97 %
 
Descriptive Properties
Colorwhite
Thermal Downshock150 sC

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CMORF5027 / 200265

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