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XTL sintyron 95% 99% high temperature alumina ceramic tube for thermocouple


Alumina ceramic tubes for thermocouples offer a range of benefits, including high temperature resistance, chemical resistance, mechanical strength, durability, and insulation. These qualities make them an essential component in many industrial processes where precise temperature monitoring is critical.

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XTL sintyron 95% 99% high temperature alumina ceramic tube for thermocouple

We can do OEM and OBM according to your drawing and requires​:​​​​​​

The production process of alumina ceramic tubes for thermocouples involves several steps:

1. Raw material preparation: High-quality alumina powder is selected as the main material for the ceramic tube. Other additives such as binders and plasticizers may also be used to enhance the properties of the final product.

2. Mixing: The alumina powder is mixed with the additives in a high-speed mixer to ensure a homogeneous distribution of the components. This mixture is then formed into a desired shape, typically a tube, using a extrusion or pressing technique.

3. Shaping: The extruded or pressed tubes are cut into the desired length and diameter using cutting tools. The precision of these cuts is crucial to the final dimensions of the ceramic tube.

4. Drying: The shaped tubes are dried in a controlled environment to remove any excess moisture and improve the strength of the material. This process can take several hours to ensure the tubes are completely dry.

5. Firing: The dried ceramic tubes are fired in a kiln at high temperatures, typically around 1600-1800°C, to sinter the alumina particles and create a dense, strong structure. This firing process may take several hours to achieve the desired properties.

6. Machining: After firing, the ceramic tubes may undergo additional machining processes such as grinding or polishing to achieve the final dimensions and surface finish required for thermocouple applications.

7. Quality control: Throughout the production process, quality control measures are implemented to ensure the ceramic tubes meet the required specifications for use in thermocouples. This may include dimensional checks, density measurements, and thermal conductivity tests.

8. Packaging: Once the ceramic tubes have passed quality control, they are packaged and prepared for shipment to customers for use in thermocouple applications.

Product description:

Specification :

ceramic alumina tube , alumina content 95% - 99.7%,White or Ivory ,Wear-resisting and acidproof alkali corrosion , High temperature (1600-1700 degree centigrade). Good chemical stability,high insulation, strong adsorption capacity, is a nice electrical insulation and wear-resisting material.

Composition AL95 AL99
AL2O3 Content 97% 99.80%
Color White Ivory
Tensile 30 Kpsi 32 Kpsi
Flexural 55 Kpsi 60 Kpsi
Compressive 300 Kpsi 330 Kpsi
Density 3.7 g/cc 3.92 g/cc
Hardness 13.8 HV, Gpa 18 HV, Gpa
Thermal Conductivity 25 W/(m K) 32 W/(m K)
C.O.T.E. 77 In / In°C (x10^7) 78 In / In°C (x10^7)
Working Temperature 1500 °C 1750 °C
Dielectric Constant 9.5 9.8
Volume Resistivity >10^14 Ohm-cm >10^15 Ohm-cm
Dielectric Strength 16 KV/mm 20 KV/mm


Feature of alumina ceramic tubes:
1.High hardness
2.high wear resistance
3.corrosion resistance
4.high temperature resistance
5.corrosion resistance and bioinertness

Application of alumina ceramic thermocouple protection tube:
1. Parts for manufacturing CVD, ion implantation, lithography and semiconductor parts.
2. In traditional industries, alumina ceramics are the ideal choice for products such as spray tubes, gas nozzles and insulators.
3. It is used as a material in industrial furnaces because of its ability to maintain hardness at high temperatures.
4. Used as a high temperature thermocouple protector, 5. Due to its high corrosion resistance, used as a material in the chemical industry.

Advantages of alumina ceramic thermocouple protection tube:

One of the main advantages of using alumina ceramic tubes for thermocouples is their high temperature resistance. Alumina ceramic can withstand temperatures up to 1800°C, making it suitable for use in a wide range of industrial processes. This high temperature resistance ensures the accuracy and reliability of temperature measurements, even in the most demanding conditions.

Another benefit of alumina ceramic tubes is their excellent chemical resistance. They are resistant to most acids, alkalis, and other corrosive substances, making them ideal for use in chemical processing, metallurgy, and other industries where harsh chemicals are present. This chemical resistance helps to prolong the lifespan of the thermocouple and ensures accurate temperature readings over time.

Alumina ceramic tubes are also known for their mechanical strength and durability. They can withstand high pressure, thermal shock, and mechanical wear, making them a reliable choice for long-term use in challenging environments. This durability helps to reduce maintenance costs and downtime, resulting in increased efficiency and productivity.

Company Information:

In Stock Thermal Analysis High Purity Alumina Ceramic Crucible

Why us?
* Professional manufacturer since 1997.
* Strict quality control on production process and tolerance.
* Free samples available
* Customized production based on your drawing or specification
* On-time delivery and reliable support and service
* Inventory available for quick shipment
* We keep confidentiality of all the drawings and business information between us.
Are you a trading company or a manufacturer?
* We are a manufaturer. 
Can you provide the free samples?
* Yes,we can offer free sample if we have it in stock,but the courier fee is to be collected.
Do you accept customized production based our specification?
* Yes,we offer OEM and ODM service. Just send us your drawing if you have it. If you don’t have a

drawing, just tell us your idea, we will work out the drawing for you.

What's the delivery time?
* 7 working days for standard products 30 days for customized products. 
What is the MOQ?
* No limit to the quantity. We can offer the best proposal and solutions according to your condition.
What is the payment terms you accept?
* T/T,LC,Western Union,moneygram are acceptable.
How to deal with the faulty?
* Firstly, Our product are produced in strict quality control system and the defective rate will be less than 2%.
If there are problems with the product, we will provide free replacement.

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