China High Temperature Ceramic Alumina Ceramic Thermocouple Thermocouple Protection Tubes, Find details about China High Temperature Ceramic, Alumina Ceramic Thermocouple from High Temperature Ceramic Alumina Ceramic Thermocouple Thermocouple Protection Tubes
Material | Alumina Content | ||||
Characteristic | Unit | AL99.7 | AL99.5 | AL99 | AL95 |
Content | 99.7% | 99.5% | 99% | 95% | |
Color | Ivory white | Ivory white | Ivory white | Ivory white, | |
Density | g/cm | 3.94 | 3.9 | 3.8 | 3.75 |
Straightness | 2‰ | 2‰ | 2‰ | 2‰ | |
Hardness | Mohs hardness | 9 | 9 | 9 | 8.8 |
Water absorption | <=0.2 | <=0.2 | <=0.2 | <=0.2 | |
Flexural strength | (20ºC) Mpa | 375 | 370 | 340 | 304 |
Compressive strength | (20ºC) Mpa | 2300 | 2300 | 2210 | 1910 |
Thermal expansion coefficient | 10/ºC | 7.6 | 7.6 | 7.6 | 7.6 |
Dielectric strength | AC.kv/mn | 10 | 10 | 10 | 10 |
Dielectric loss | <0.0001 | <0.0001 | 0.0006 | 0.0004 | 0.001 |
Volume resistivity (20ºC) (300ºC) | Ω.cm3 | >1014 2*1012 | >1014 2*1012 | >1014 4*1011 | >1014 2*1011 |
Dielectric constant | 25ºC@1HM | 9.8 | 9.7 | 9.5 | 9.2 |
Thermal conductivity | W/m.k | 35 | 35 | 34 | 20 |
Long-term use temperature | ºC | 1700 | 1650 | 1600 | 1400 |
OD*ID (mm) | Model & length | OD*ID (mm) | Model & length | OD*ID (mm) | Model & length |
2*1 | Al2O3 99.5% <=1500 mm | 10*7 | Al2O3 95% / Al2O3 99%/ Al2O3 99.5% <=2500 mm | 19.05*14.3 | Al2O3 95% / Al2O3 99%/ Al2O3 99.5% <=2500 mm |
3*2 | 11.13*7.95 | 20*15 | |||
4*2.5 | 12*8 | 22.23*15.88 | |||
5*3 | 12.7*8.9 | 23.83*17.48 | |||
6.35*3.96 | Al2O3 95% / Al2O3 99%/ Al2O3 99.5% <=2500 mm | 14*10 | 25.4*19.05 | ||
7.95*4.78 | 15*10 | 26*20 | |||
8*5.5 | 15*11 | 28*22 | |||
9.53*6.35 | 16*12 | 30*23 | |||
10*6 | 17.48*12.7 |