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CeramTec Rubalit® A 1896 Alumina

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® A 1896 Alumina.pdf
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Material Notes:
Rubalit® A 1896 (96%) is an aluminum oxide ceramic with an optimum price/performance ratio. Its outstanding properties are low density, low weight, high corrosion and wear resistance, excellent electrical insulation, and anti-friction properties for sliding materials such as sintered metal, carbon, and glass-fiber reinforced plastic. A polishing process opens the pores on the sliding surfaces, enabling the material to absorb lubricants and solid particles.
Physical Properties Metric English Comments
Density 3.73 g/cc
0.135 lb/in³
DIN EN 623-2
Water Absorption 0.00 %
0.00 %
DIN EN 623-2
Porosity 5.0 %
5.0 %
closed (approximate vol. %)
Permeability 0.00
0.00
%, Gas
Weibull Modulus >= 10
>= 10
DINV ENV 843-5
Mechanical Properties Metric English Comments
Vickers Microhardness 1520
1520
HV 0.5; DINV ENV 843-4
Tensile Strength at Break 330 MPa
47900 psi
ACMA Test #4 / DIN EN 843-1
Tensile Modulus 330 GPa
47900 ksi
Young's; DINV ENV 843-2
Flexural Strength 330 MPa
47900 psi
DIN EN 843-1
Compressive Strength 3400 MPa
493000 psi
DIN 51067T1
Poissons Ratio 0.23
0.23
DINV ENV 843-2
Fracture Toughness 4.00 MPa-m½
3.64 ksi-in½
K<sub>IC</sub>; DIN 51109
Shear Modulus 134 GPa
19400 ksi
Calculated
Thermal Properties Metric English Comments
CTE, linear 5.40 µm/m-°C

@Temperature 20.0 - 200 °C
3.00 µin/in-°F

@Temperature 68.0 - 392 °F
DIN EN 821-1
6.90 µm/m-°C

@Temperature 20.0 - 400 °C
3.83 µin/in-°F

@Temperature 68.0 - 752 °F
DIN EN 821-1
7.50 µm/m-°C

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

@Temperature 68.0 - 1110 °F
DIN EN 821-1
8.30 µm/m-°C

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

@Temperature 68.0 - 1830 °F
DIN EN 821-1
Specific Heat Capacity 0.900 J/g-°C

@Temperature 20.0 - 100 °C
0.215 BTU/lb-°F

@Temperature 68.0 - 212 °F
DINV ENV 821-3
Thermal Conductivity 24.0 W/m-K

@Temperature 20.0 - 100 °C
167 BTU-in/hr-ft²-°F

@Temperature 68.0 - 212 °F
DIN EN 821-2
Maximum Service Temperature, Air 1450 °C
2640 °F
Maximum Service Temperature, Inert 1450 °C
2640 °F
Electrical Properties Metric English Comments
Volume Resistivity >= 1.00e+7 ohm-cm

@Temperature 800 °C
>= 1.00e+7 ohm-cm

@Temperature 1470 °F
IEC 672-1
>= 1.00e+11 ohm-cm

@Temperature 400 °C
>= 1.00e+11 ohm-cm

@Temperature 752 °F
IEC 672-1
>= 1.00e+14 ohm-cm

@Temperature 20.0 °C
>= 1.00e+14 ohm-cm

@Temperature 68.0 °F
IEC 672-1
Dielectric Constant 10

@Frequency 1.00e+7 Hz
10

@Frequency 1.00e+7 Hz
IEC 672-1
Dielectric Strength 20.0 kV/mm
508 kV/in
IEC 672-1
Dielectric Loss Index 0.0010

@Frequency 1.00e+7 Hz
0.0010

@Frequency 1.00e+7 Hz
IEC 672-1
Descriptive Properties Value Comments
Color White
Surface Contact Area (%) 60-80
Thermal Shock Resistance R1 (K) 118
R1 = [s? (1-µ)] / (a·E)
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