Alumina ceramic plate is a flat, thin piece of ceramic material made of alumina, which is a high-performance engineering material known for its excellent mechanical, electrical, and thermal properties. Alumina ceramic plates are highly resistant to wear, corrosion, and high temperatures, making them suitable for a wide range of applications in various industries.
Alumina ceramic plates can be made in various sizes, shapes, and thicknesses, and can be customized to meet specific requirements. They are often used as substrates for electronic components, as wear-resistant parts in mechanical systems, as heating elements in high-temperature applications, and as structural components in aerospace and defense industries.
| Dimension | Outer dia. mm | Inner dia.mm | Length mm | Remark | |||
| Item | |||||||
| Thermocouple protection tube | 7-170 | 1-110 | 10-2500 | If you need others,we can customize for you. | |||
| Insulated tube | Single hole | 2-530 | 1-500 | 10-5200 | |||
| (inner core) | Double holes | 1-10 | 0.4-2 | 10-2500 | |||
| Four-Nine holes | 1-10 | 0.5-2 | 10-2500 | ||||
| Item | Test Condition | 78-82% Al2O3 | 95% Al2O3 | 99% Al2O3 | 99.5% Al2O3 | ||
| Physical properties | Density | g/m³ | >2.9 | >3.6 | 3.89 | 3.96 | |
| Moisture absorption | % | 5-7 | 0 | 0 | 0 | ||
| Mechanical properties | ROHS Hardness | 60-70 | ≥85 | ≥89 | ≥89 | ||
| Flexural strength | psiX103 | 20℃ | 358 | 550 | 550 | ||
| Compressive strength | psiX103 | 20℃ | 2068(300) | 2600(377) | 2600(377) | ||
| Fracture toughness | Mpa.m3/2 | K(l c) | 4.3 | 5.6 | 6 | ||
| Thermal properties | Maximum use temperature | ℃ | 1350 | 1450 | 1600 | 1650 | |
| Thermal expansion coefficient | 1X10-6/℃ | (25-1000℃) | 6.1-6.6 | 7.6 | 7.9 | 8.2 | |
| Thermal shock resistance | ℃ | Tc | very good | 250 | 200 | 200 | |
| Thermal conductivity | w/mok | 20℃ | 16 | 30 | 30.4 | ||
| Electrical properties | Volume resistivity | Ohm/cm2 | 100℃ | >1013 | >1013 | >1014 | >1014 |
| Dielectric breakdown strength | KV/mm | 8.7(220) | 8.7(220) | 8.7(220) | 8.7(220) | ||
| Dielectric constant | (E) | 1MHz25℃ | 9 | 9 | 9.7 | 9.7 | |
| Dielectric constant (100MHz) | (E) | 9.5 | |||||
