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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  |
| Price | EMAIL US sales@lookpolymers.com |
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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