ceramic tube insulator high temperature ceramic tube ceramic tubes aquarium axial lead ceramic tube fuse
ceramic tube insulator high temperature ceramic tube ceramic tubes aquarium axial lead ceramic tube fuse
product name:Industrial alumina ceramic tube
Aluminum oxide ceramics are high-purity aluminum oxide products with excellent physical properties and chemical stability. The following are the performance characteristics and applications of alumina ceramics:
1. High hardness: Aluminum oxide ceramics have a very high hardness, up to level 9, which is more than 8 times that of steel. Therefore, they can be used to manufacture wear-resistant and high-temperature resistant components.
2. High melting point: Aluminum oxide ceramics have a high melting point of about 2050 ℃, making them suitable for use in high-temperature environments. For example, they can be used to manufacture high-temperature furnaces, heat exchangers, etc.
Aluminum oxide ceramics have a wide range of applications in industries, scientific research, military and other fields. For example, in automobile manufacturing, alumina ceramics can be used to manufacture wear-resistant components such as brake pads and clutch plates; In the aerospace field, alumina ceramics can be used to manufacture high-temperature engine nozzles, turbine blades, etc; In the medical field, alumina ceramics can be used to manufacture dentures, bone implants, etc; In the chemical industry, alumina ceramics can be used to manufacture reaction vessels, mass transfer equipment, and so on.
Physicochemical indexes of alumina solid rod:
| Item | Unit | Typical Values |
| Physical Properties | ||
| Colour | Ivory | |
| Density | g/cm3 | 3.85 |
| Alumina Content | % | 99% |
| Gas Permeability | 0 | |
| Water Absorption | % | 0% |
| Physical Properties | ||
| MONS’Hardness | 82 | |
| Vickers Hardness(Hv50) | Gpa(kg/mm2) | 15.7(1600) |
| Flexural Strength(20℃) | Mpa | 330 |
| Compressive Strength(20℃) | Mpa | 2000 |
| Fracture Thoughness(20℃) | Mpam1/2 | 4 |
| Thermal Properties | ||
| Thermal Conductivity(20℃) | W/(m.k) | 27.5 |
| Thermal Expansion Coeffcient | 10-6/℃ | 7.6 |
| Thermal Shock Resistance | △T℃ | 200 |
| Maximum Use Temperature | ℃ | 1650 |
| Electrical Properties | ||
| Dielectric Strength | KV/mm | ＞12 |
| Dielectric Conatant | ε0 | 9-10 |
| Dielectric Loss Angle(1MHz) | 0.0002 | |
| Volume Resistivity(20℃) | Ω.cm | ＞1014 |
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