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Master Bond adhesives

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CeramTec AT 79 Alumina, 99.6%
Categories: Ceramic; Oxide; Aluminum Oxide

Material Notes: Aluminas exhibit good mechanical properties such as hardness, compressive and tensile strength, and elastic modulus. They perform well at elevated temperatures.

Key Words: Al2O3, aluminum oxide
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Physical PropertiesOriginal ValueComments
Density 3.95 g/ccDIN EN 623-2
Water Absorption 0.00 %Open Porosity; DIN EN 623-2
Permeability 0.00%, Gas
Weibull Modulus 14DINV ENV 843-5
 
Mechanical PropertiesOriginal ValueComments
Vickers Microhardness 2110HV1; DINV ENV 843-4
Tensile Modulus 390 GPaYoung's; DINV ENV 843-2
Flexural Strength 470 MPaDIN EN 843-1
Compressive Strength 4000 MPaDIN 51067T1
Poissons Ratio 0.23DINV ENV 843-2
Fracture Toughness 4.00 MPa-m½KIC (SEVNB); DIN CEN/TS 14425-1
Shear Modulus 159 GPaCalculated
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity 5.00e+8 ohm-cm
@Temperature 400 °C
IEC 672-1
 5.00e+14 ohm-cm
@Temperature 20.0 °C
IEC 672-1
Dielectric Constant 9.0
@Frequency 1e+6 Hz
IEC 672-1
Dielectric Strength 18.0 kV/mmIEC 672-1
Dielectric Loss Index 0.0050
@Frequency 9.00e+9 Hz
IEC 672-1
 
Thermal PropertiesOriginal ValueComments
CTE, linear 7.50 µm/m-°C
@Temperature 20.0 - 100 °C
DIN EN 821-1
Specific Heat Capacity 0.900 J/g-°CDINV ENV 821-3
Thermal Conductivity 30.0 W/m-KDIN EN 821-2
Maximum Service Temperature, Air 1500 °C
Maximum Service Temperature, Inert 1500 °C
 
Component Elements PropertiesOriginal ValueComments
Al2O3 99.6 %
 
Descriptive Properties
Ra = Arithmetic Mean Roughness Value (µm)<0.1
Thermal Shock Resistance R1 (K)127calculated; R1 = [σs (1-µ)] / (α·E)

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CCERA905 / 107505

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