Customized Large Size Al2O3 Ceramic Hollow Tube
The description of alumina al2o3 ceramic hollow tube
Alumina (Al2O3) is a superb hard, chemically resistant material and has the ability to withstand very high temperatures in aggressive environments. Our facility offers alumina with various purity levels which ranges from 75% to 99.8%. The level of purity, grain size, and density required is dependent on the rigors of the application and the component configuration.
Currently, we have been supplying a broad range of ceramic tube, inclding different design, different specification, different surface treatment and so on. All these ceramic tube can be machined at our own factory to cater to customers' specific needs.
The specification of the al2o3 ceramic hollow tube
1. Forming methods: dry pressed, hot pressed, extrusion, ceramic Injection molding, Isostatic pressed
2. Material options: alumina ( purity range from 95% to 99.8%), zirconia,silicon nitride, boron nitride
3. Dimension capability: the min. inner diameter can be 1mm, the max. outer diameter up to be 800mm
4. Available design: both ends open, one end closed, multiply holes, side-slot, steps, threaded, half tubes.
5. Secondary processing: CNC machining, lapping, grinding, drilling, threaded,precision cutting and so on
6. Tolerance: outer diameter can be 0.005mm, inner diameter can be 0.01mm, overall length can be 0.01mm
7. Surface treatment: external and internal surface to be lappend, polished, glazed or metallized
The prime characteristics of Alumina Ceramic tube
1. High temperature resistance, it can withstand up to 1750℃ in the air condition, but up to 2200℃ in vacuum atmosphere
2. Outstanding wear resistance, over 276 times in comparison with stainless steel
3. Exceptional corrosion resistance, it can withstand various strong acid and alkali, like HF, H2SO4
4. Extraordinary electrical insulation, it always use in many high voltage, high-current application
5. Great mechanical properties, hardness, compressive and flexural strength are much higher stainless steel
Remark:
We are able to achieve a variety of special requirement of Ceramic Tubes, including different materials,
different designs, different geometries.
The technical datasheet of various different purity of alumina
Gerneral
| Property
| Units
| 99.5% al2o3 | 99.2% al2o3 | 95% al2o3 |
Mechanical
| Density
| g/cm3
| ≥3.90
| ≥3.85
| ≥3.65
|
Water absorption
| %
| 0
| 0
| 0
|
Hardness
| HV
| 1700
| 1700
| 1500
|
Flexural strength
| Mpa
| ≥379
| ≥338
| ≥320
|
Compressive strength
| Mpa
| ≥2240
| ≥2240
| ≥2000
|
Fracture toughness
| Mpam^1/2
| 4-5
| 4-5
| 3~4 |
Thermal
| Max. service temperature
(Non-loading)
| ℃
| 1700
| 1600
| 1500 |
CTE (20-800℃)
| 1×10 -6 /℃
| 6.5~8.0
| 6.2~8.0
| 5.0~8.0
|
Thermal shock
| T(℃)
| ≥250
| ≥220
| ≥200
|
Thermal conductivity
| W/m.k
| 30 | 29 | 24 |
Specific heat
| 1 x 10^3 J/(kg·K)
| 0.78
| 0.78
| 0.78
|
Electrical
| Volume resistivity
|
|
|
|
|
25℃
| ohm.cm
| ＞1 x 10^14
| ＞1 x 10^14
| ＞1 x 10^14
|
300℃
| 1 x 10^12
| 8 x 10^11
| 10 ^12 -10^13
|
500℃
| 5 x 10^10
| 2 x 10^ 9
| 1 x 10^9
|
Insulation strength
| KV/mm
| 19
| 18 | 18 |
Dielectric constant （1Mhz）
| (E)
| 9.7
| 9.5 | 9.5 |
Our advantage and strength
FAQs (Frequently Asked Questions)
Q1: Is it available to produce customized products? A: We always support custom-made ceramic tubes as per different dimensions, designs, surface treatment. Q2. When can I get the price after sending the inquiry?
A: We regularly quote within 24 hours after we get your inquiry. If you are in urgent need of getting the price,
please call us or tell us in your email so that we will proceed with your inquiry as a priority.
Q3. How to ensure quality in your factory?
A: The strict quality-control will be done in the production line, including IQC, IPQC, QA, OQC,
also both CKP, AQL are regularly used in the production.
Q4. Are you a factory or trading company?
A: We are a professional manufacturer. You are welcome to visit our factory and cooperate with us.
Q5.Can you produce other technical ceramic parts?
A: We also focus on producing Metalized Ceramics, Industrial Ceramic Plate, Ceramic Seals and Textile Ceramics.
Looking for ideal Custom Made Ceramic Tube Manufacturer & supplier ? We have a wide selection at great prices to help you get creative. All the Al2O3 Ceramic Hollow Tube are quality guaranteed. We are China Origin Factory of Hollow Ceramic Tube. If you have any question, please feel free to contact us.
Product Categories : Ceramic Tubes > Alumina Ceramic Tube
Mr. Andy Chen