- Contact Person : Ms. Liang Sally
- Company Name : Chongqing Haichen Instrument Co., Ltd.
- Tel : 86-023-68261638
- Fax : 86-023-68263202
- Address : Chongqing,Chongqing,No. 5, -1/F, 7 Building, No. 44, Longfeng Third Village, Beibei District
- Country/Region : China
- Zip : 400700
99.7% Purity Aluminum Tube/Alumina Ceramic Tube
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99.7% Purity Aluminum Tube/Alumina Ceramic Tube
The size ranges from 1mm to 110mm for O.D., and the length is longer than 1mm
Furnace 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 | |||||||
Main performance index
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 |
Our company has a good reputation in China.And our quotation given you is the same as our domestic clients.So it is absolutely fair to you. Any more questions and special demands please feel free to ask me.And please give me your order according to the following order guidelines:
order guidelines
1.Graduations(K,N,E,J,T,S,R,N etc.) and working temperature
2.Material demand
3.specifications(out diameter,inner diameter,length,thickness,error tolerance)
The following is our company's website,you can find more products you wants in it:
http://cqhaichen.en.alibaba.com/index.html
99.7% Purity Aluminum Tube/Alumina Ceramic Tube
