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Master Bond adhesives

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85% Alumina, vitreous body
Categories: Ceramic; Oxide; Aluminum Oxide

Material Notes: Fair Thermal Shock resistance, Tc value = 750-1000°C (1380-1830°F).

Key Words: aluminum oxide
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Physical PropertiesOriginal ValueComments
Density 3.40 - 3.53 g/cc
Water Absorption 0.00 - 0.020 %24 hrs.
Open Porosity <= 1.0 %Hermetic (helium mass spectrometer test on 0.254 mm (0.010 in) sections)
 
Mechanical PropertiesOriginal ValueComments
Knoop Microhardness 1450
Hardness, Mohs 8.5 - 9.0
Tensile Strength, Ultimate 115 - 160 MPa
Modulus of Elasticity 215 - 240 GPa
Flexural Strength 205 - 310 MPa
Compressive Strength 965 - 2760 MPa
Charpy Impact 0.660 - 0.790 J
 
Electrical PropertiesOriginal ValueComments
Electrical Resistivity 400000 - 500000 ohm-cm
@Temperature 900 °C
 1.00e+8 - 7.50e+9 ohm-cm
@Temperature 500 °C
 2.00e+13 - 7.50e+13 ohm-cm
@Temperature 100 °C
 1.00e+14 - 3.60e+14 ohm-cm
@Temperature 25.0 °C
Dielectric Strength 8.07 - 13.8 kV/mmAC
 
Thermal PropertiesOriginal ValueComments
CTE, linear 5.47 - 5.68 µm/m-°C
@Temperature 25.0 - 200 °C
 6.55 - 6.96 µm/m-°C
@Temperature 25.0 - 600 °C
 7.33 µm/m-°C
@Temperature 25.0 - 800 °C
 7.60 - 7.90 µm/m-°C
@Temperature 25.0 - 700 °C
 7.67 - 7.89 µm/m-°C
@Temperature 25.0 - 1000 °C
Specific Heat Capacity 0.419 J/g-°C
Thermal Conductivity 13.0 - 17.0 W/m-K
@Temperature 38.0 °C
 26.0 W/m-K
@Temperature 425 °C
 33.0 W/m-K
@Temperature 870 °C
Maximum Service Temperature, Air 1200 - 1400 °Cmaximum working temperature
 
Component Elements PropertiesOriginal ValueComments
Al2O3 85 %

References for this datasheet.

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BA2C / 137

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