China 99% Alumina Ceramic Thermocouple Protection Tube

99% Alumina Ceramic Thermocouple Protection Tube
Chemshun Alumina ceramic thermocouple protection tube .Thermocouple temperature measuring instrument is a commonly used temperature measuring element in industrial production. Among them, the key core parts are temperature measuring heating wire and insulating protective sleeve. Alumina ceramic insulating protective sleeve has good thermal conductivity and high temperature resistance. It is widely used in the production of thermocouples. It plays a key role in protecting the temperature measurement and thermal conductivity wires and increases the service life of thermocouples. The corundum protective sleeve has a sealed round head shape at one end and good compactness. It is generally used in conjunction with an insulating core to form an important temperature measuring element of a thermocouple protection tube.
>>>Physical Property:
Material Alumina ContentCharacteristicUnitAL99.7AL99.5AL99AL95Content 99.7%99.5%99%95%Color Ivory whiteIvory whiteIvory whiteIvory white,
Densityg/cm3.943.93.83.75Straightness 2‰2‰2‰2‰HardnessMohs hardness9998.8Water absorption <=0.2<=0.2<=0.2<=0.2Flexural strength(20ºC) Mpa375370340304Compressive strength(20ºC) Mpa2300230022101910Thermal expansion coefficient10/ºC7.67.67.67.6Dielectric strengthAC.kv/mn10101010Dielectric loss<0.0001<0.00010.00060.00040.001Volume resistivity
(20ºC)
(300ºC)
Ω.cm3
>1014
2*1012
>1014
2*1012
>1014
4*1011
>1014
2*1011Dielectric constant25ºC@1HM9.89.79.59.2Thermal conductivityW/m.k35353420Long-term use temperatureºC1700165016001400
>>>SIze :

OD*ID (mm)Model & lengthOD*ID (mm)Model & lengthOD*ID (mm)Model & length 2*1
Al2O3 99.5%
<=1500 mm
10*7
Al2O3 95% /
Al2O3 99%/
Al2O3 99.5%
<=2500 mm19.05*14.3
Al2O3 95% /
Al2O3 99%/
Al2O3 99.5%
<=2500 mm 3*211.13*7.9520*15 4*2.512*822.23*15.88 5*312.7*8.923.83*17.48 6.35*3.96
Al2O3 95% /
Al2O3 99%/
Al2O3 99.5%
<=2500 mm14*1025.4*19.05 7.95*4.7815*1026*20 8*5.515*1128*22 9.53*6.3516*1230*23 10*617.48*12.7
>>>Delivery time of goods in stock : 2-3 days
Production cycle of customized Size : 25-30 days