| Customization: | Available |
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| Application: | Industrial Applications |
| Ceramic Tube & Rod: | Ceramic Tube |
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Alumina (Al2O3) is the most commonly used industrial ceramic material due to its high mechanical strength, this high-performance. It results in suitable for use in many future-oriented processes. Additionally, the outstanding chemical resistance, great thermal properties and favorable cost of aluminum oxide (Al2O3 content > 90%), make alumina a perfect material for many industries, from electrical applications and high-temperature applications.
Ceramic alumina tubes are found in a variety of electrical/electronic devices, and engineering equipment that works as structural ceramics, so these alumina ceramic tubes have special shapes, such as flanged, stepped, slotted, multiple holes, half tube, threaded, and so on. Sometimes, in order to enhance the breakdown insulation strength and mechanical strength, the cylindrical surface needs to be glazed.1. Extreme high-temperature stability under reducing, inert, and high-vacuum conditions under high temperatures up to 1800°C.
2. Great mechanical properties, hardness, compressive and flexural strength are much higher in stainless steel| Material options | Alumina ( purity from 40% to 99.8%), Zirconia, Silicon carbide, Silicon nitride |
| Forming methods | Extrusion, Dry pressed, Hot pressed, Ceramic Injection molding, ISO pressed |
| Dimensional capability | The inner diameter can be min.1mm, the outer diameter can max .800mm |
| Dimensional tolerance | The OD to be 0.005mm, the ID to be 0.01mm, the length to be 0.001mm |
| Surface treatment | External and internal surfaces to be polished, glazed, or metalized |
| Secondary processing | CNC machining, lapping, threading, drilling, grinding, precision laser cutting |
| General | Properties | Unit | 99.5% Al2o3 | 99% Al2O3 | 96% Al2O3 | Steatite | YTPZ ZrO2 |
SiC |
| Mechanical | Volume Density |
G/cm 3 | ≥3.90 | ≥3.85 | ≥3.65 | ≥2.70 | ≥6.0 | ≥3.13 |
| Hardness | HRA | 1700 | 1700 | 1500 | 800 | 1300 | 2500 | |
| Porosity | % | 0 | 0 | 0 | 0 | 0 | 0 | |
| Compressive Strength | Mpa | ≥2240 | ≥2240 | ≥2000 | ≥551 | ≥1990 | ≥ 2200 | |
| Bending Strength |
Mpa | ≥379 | ≥338 | ≥320 | ≥190 | ≥1200 | ≥400 | |
| Elastic Modulus |
Gpa | 370 | 350 | 303 | 110 | 210 | 400 | |
| Thermal | Thermal Conductivity | W/m.K | 30 | 29 | 24 | 2.5 | 3 | 120~150 |
| Coefficient of Thermal Expansion |
1*10 -6 m/k | 6.5~8.0 | 6.2~8.0 | 5.0~8.0 | 7.7~8.0 | 8.0~9.5 | 4 | |
| Electrical | Insulation Breakdown | KV/mm | 19 | 18 | 18 | 10 | 17 | - |
| Volume Resistivity | Ohm.Cm | >1*1014 | >1*1014 | >1*1014 | >1*1013 | >1*1011 | 5*10 6 |
Our advantage and strength
1. Own in-house comprehensive types of manufacturing equipment from raw material to precision machining.
Q1: Is it available to produce customized products?
A: We support custom-made alumina ceramic tubes as per different dimensions, designs, and surface treatments.
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