Features of 4J33, 4J34 iron nickel cobalt porcelain seal alloy
Linear expansion coefficient similar to 95% Al2O3 ceramic in the temperature range of -60 ℃ ~ ﹢ 600 ℃
4J33, 4J34 iron nickel cobalt porcelain seal alloy
Electric vacuum device and 95% AI2O3 ceramic matching sealing.
chemical composition(%)
|
Alloy |
C≤ |
S≤ |
P≤ |
Mn≤ |
Si≤ |
Ni |
Co |
Fe |
|
4J33 |
0.05 |
0.02 |
0.02 |
0.50 |
0.30 |
32.1~33.6 |
14.0~15.2 |
margin |
|
4J34 |
0.05 |
0.02 |
0.02 |
0.50 |
0.30 |
28.5~29.5 |
19.5~20.5 |
margin |
Average linear expansion coefficient
|
Alloy |
Sample processing |
Average linear expansion coefficient a/10-6·K-1 |
||
|
20~400℃ |
20~500℃ |
20~600℃ |
||
|
4J33 |
In a protective atmosphere or vacuum, heat to 900 ± 20 ℃, keep it for 1 hour, and cool it to 200 ℃ or less at a rate of not more than 5 ℃ / min. |
6.0~6.8 |
6.6~7.4 |
- |
|
4J34 |
6.3~7.1 |
- |
7.8~8.5 |
|
The above data is for reference only. Please contact us for specific requirements
Shenzhen Zhengjie Metal Material Co., Ltd.
Contact person: Mr. Huang (13480167607)
Sales Hotline: 0755-81718772
Q Q: 2263040115 305084123
Website: www.szzj168.com
Email: 2263040115@qq.com
Address: No. 8, Songzi Park, Minzhi, Longhua New District,Shenzhen
