Ferrous & Non-ferrous Alloy

? China?Industrial Alumina Ceramic Block
Electrical insulation. Most ceramic materials are excellent electrical insulators. Alumina, for instance, with a room-temperature volume resistivity of more than 10 14ohm-cm and a melting point of 2,090°C, is ideal for spark-plug insulators.
Product Description ? 1. Material: 99%Alumina
2. High intensity
3. Wear resistance, excellent performance
4. Shaped as your designing and requirment ? Specification of China Industrial Alumina Ceramic Block ?
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Items | Unit | 95%Al2O3 | 99.5%Al2O3 |
Density | g/cm3 | 3.7 | 3.9 |
Flexural Strength | MPa | 313 | 340 |
Compressive Strength | MPa | 3400 | 3600 |
Modulus of Elasticity | GPa | 350 | 380 |
Impact Resistance | MPa·m1/2 | 4 | 5.1 |
Weibull Modulus | m | 10 | 10 |
Vickers Hardness | HV0.5 | 1800 | 1900 |
Thermal Conductivity | W/mk | 24 | 27 |
Highest Application Temperature | oC | 1600 | 1750 |
Volume Resistivity at 20oC | Ω.cm20 | >10 14 | >10 14 |
Dielertric strength | KV/mm | 20 | 25 |
Thermal expansion | X10-6/K | 5.0-8.3 | 5.4-8.3 |
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