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Master Bond adhesives

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CeramTec Rubalit® 702 Alumina, 85%
Categories: Ceramic; Oxide; Aluminum Oxide

Material Notes: Rubalit® 702 is a high-performance material for the manufacturing of metal-film resistors. With an alumina content of 85%, it provides extreme hardness and high thermal conductivity. Practical applications have shown that Rubalit® 702 is capable of diffusing as much heat as the cap and film. Its extreme hardness necessitates laser trimming of the film material.

Key Words: Al2O3, aluminum oxide
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Physical PropertiesOriginal ValueComments
Density 3.55 g/ccDIN EN 623-2 / ASTM-C373 / ASTM-C20
Water Absorption 0.00 %DIN EN 623-2 / ASTM-C373
 
Mechanical PropertiesOriginal ValueComments
Hardness, Rockwell 45 N 73ASTM-E18
Vickers Microhardness 73HV 0.5; DINV ENV 843-4
Flexural Strength 390 MPa20 x 40 mm
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity 1.00e+8 ohm-cm
@Temperature 600 °C
ASTM-D1829
 1.00e+10 ohm-cm
@Temperature 400 °C
ASTM-D1829
 1.00e+12 ohm-cm
@Temperature 200 °C
ASTM-D257
Dielectric Constant 8.0
@Frequency 1e+6 Hz
IEC 672-1 / ASTM-C150
Dielectric Strength >= 10.0 kV/mmASTM-D150
Dielectric Loss Index 0.0010
@Frequency 1e+6 Hz
IEC 672-1 / ASTM-D149,150
 
Thermal PropertiesOriginal ValueComments
CTE, linear 4.50 µm/m-°C
@Temperature 20.0 - 100 °C
ASTM-C372
 6.20 µm/m-°C
@Temperature 20.0 - 300 °C
ASTM-C372
 7.00 µm/m-°C
@Temperature 20.0 - 600 °C
ASTM-C372
 7.80 µm/m-°C
@Temperature 20.0 - 1000 °C
ASTM-C372
Thermal Conductivity 16.0 W/m-KDIN EN 821-2 / ASTM-C408
Maximum Service Temperature, Air 1350 °C
 
Component Elements PropertiesOriginal ValueComments
Al2O3 85 %
 
Descriptive Properties
ColorWhite
Ra = Arithmetic Mean Roughness Value (µm)0.2-0.3
Te Value (°C)850

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CCERA929 / 107529

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