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CeramTec Rubalit® 702 Alumina, 85%

Category Ceramic , Oxide , Aluminum Oxide
Manufacturer CeramTec North America
Trade Name
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF CeramTec Rubalit® 702 Alumina, 85%.pdf
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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.
Physical Properties Metric English Comments
Density 3.55 g/cc
0.128 lb/in³
DIN EN 623-2 / ASTM-C373 / ASTM-C20
Water Absorption 0.00 %
0.00 %
DIN EN 623-2 / ASTM-C373
Mechanical Properties Metric English Comments
Hardness, Rockwell 45 N 73
73
ASTM-E18
Vickers Microhardness 73
73
HV 0.5; DINV ENV 843-4
Flexural Strength 390 MPa
56600 psi
20 x 40 mm
Thermal Properties Metric English Comments
CTE, linear 4.50 µm/m-°C

@Temperature 20.0 - 100 °C
2.50 µin/in-°F

@Temperature 68.0 - 212 °F
ASTM-C372
6.20 µm/m-°C

@Temperature 20.0 - 300 °C
3.44 µin/in-°F

@Temperature 68.0 - 572 °F
ASTM-C372
7.00 µm/m-°C

@Temperature 20.0 - 600 °C
3.89 µin/in-°F

@Temperature 68.0 - 1110 °F
ASTM-C372
7.80 µm/m-°C

@Temperature 20.0 - 1000 °C
4.33 µin/in-°F

@Temperature 68.0 - 1830 °F
ASTM-C372
Thermal Conductivity 16.0 W/m-K
111 BTU-in/hr-ft²-°F
DIN EN 821-2 / ASTM-C408
Maximum Service Temperature, Air 1350 °C
2460 °F
Component Elements Properties Metric English Comments
Al2O3 85 %
85 %
Electrical Properties Metric English Comments
Volume Resistivity 1.00e+8 ohm-cm

@Temperature 600 °C
1.00e+8 ohm-cm

@Temperature 1110 °F
ASTM-D1829
1.00e+10 ohm-cm

@Temperature 400 °C
1.00e+10 ohm-cm

@Temperature 752 °F
ASTM-D1829
1.00e+12 ohm-cm

@Temperature 200 °C
1.00e+12 ohm-cm

@Temperature 392 °F
ASTM-D257
Dielectric Constant 8.0

@Frequency 1.00e+6 Hz
8.0

@Frequency 1.00e+6 Hz
IEC 672-1 / ASTM-C150
Dielectric Strength >= 10.0 kV/mm
>= 254 kV/in
ASTM-D150
Dielectric Loss Index 0.0010

@Frequency 1.00e+6 Hz
0.0010

@Frequency 1.00e+6 Hz
IEC 672-1 / ASTM-D149,150
Descriptive Properties Value Comments
Color White
Ra = Arithmetic Mean Roughness Value (µm) 0.2-0.3
Te Value (°C) 850
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