High Aluminum Ceramic Tube Thermocouple Protection Tube
USD $5 - $40 /Piece
Min.Order:10 Pieces
Chongqing Haichen Instrument Co., Ltd.
High Aluminum Ceramic Tube Thermocouple Protection Tube
OD(mm) | 25~30 | 31~40 | 41~50 | 51~60 | 61~70 | 71~80 | 81~90 | 91~100 |
ID(mm) | 19~23 | 24~32 | 33~40 | 41~50 | 51~60 | 61~70 | 71~80 | 81~90 |
L(mm) | 200~1600 |
Serial number | performance index | Measuring unit | High purity alumina | Alumina | High alumina | ||
1 | Al2O3 | % | 99.7 | 99.3 | 85 | ||
2 | SiO2 | % | less than0.1 | — | — | ||
3 | Density | g/cm3 | 3.95 | 3.88 | 3.2 | ||
4 | Wter absorption | % | 0 | 0.01 | 0.2 | ||
5 | Cld compressive strength | MPa | 450 | 350 | 200 | ||
6 | 20 degree Celsius leak rates | Torr/L.sec | less than10-11 | less than10-11 | less than10-11 | ||
7 | Twisting in high temperature | mm | 1700 degree Celsius 0.2 allowance | 1600 degree Celsius 0.2 allowance | 1400 degree Celsius 0.2 allowance | ||
8 | Bonding in high temperature |
| 1700 degree Celsius non-caked | 1600 degree Celsius non-caked | 1400 degree Celsius non-caked | ||
9 | 20—1000 degree Celsius coefficient of thermal expansion | mm.10-6/degree Celsius.m | 8.6 | 8.2 | 8.2 | ||
10 | Thermal conductivity | W/m.k | 25 | 25 | 25 | ||
11 | Electric insulation strength | KV/mm | 20 | 20 | 15 | ||
12 | 20 degree Celsius direct current insulating resistance | Ohm/cm | 1014 | 1014 | 1014 | ||
13 | High-temperature insulation resistance | 1000 degree Celsius MΩ | ≥0.08 | ≥0.08 | ≥0.08 | ||
1300 degree Celsius MΩ | ≥0.02 | ≥0.02 | ≥0.02 | ||||
14 | Thermal shock resistance |
| 1550 degree Celsius 6 times not cracked | 1550 degree Celsius 6 times not cracked | 1300 degree Celsius 3 times not cracked | ||
15 | Maximum service temperature | degree Celsius | 1900 | 1800 | 1400 |