4J29, 4J44 FeNiCo glass sealing alloy features
It has a certain linear expansion coefficient in the temperature range of -60 ° C ~ 400 ° C, which can be matched with hard glass and sealed tightly.
4J29, 4J44 iron nickel cobalt glass seal alloy applications
It is suitable for electric vacuum components such as transmitting tube, oscillating tube, pilot tube, transistor, tube plug, relay housing, etc.
chemical composition(%)
|
Alloy |
C≤ |
S≤ |
P≤ |
Si≤ |
Mn≤ |
Ni |
Cr≤ |
Co |
Cu≤ |
Mo≤ |
Fe |
|
4J29 |
0.03 |
0.02 |
0.02 |
0.30 |
0.50 |
28.5 29.5 |
0.2 |
16.8 17.8 |
0.2 |
0.2 |
margin |
|
4J44 |
0.30 |
0.02 |
0.02 |
0.30 |
0.50 |
34.2 35.2 |
0.2 |
8.50 9.50 |
0.2 |
0.2 |
margin |
Average linear expansion coefficient and tensile strength of the strip
|
Alloy |
Sample processing |
Average linear expansion coefficient a/10-6·K-1 |
Status (codename) |
tensile strength σ b/ MPa |
||
|
20~300℃ |
20~400℃ |
20~450℃ |
||||
|
4J29 |
In a hydrogen atmosphere, heat to 900 ± 20 ℃, keep it for 1 hour, then heat it to 1100 ± 20 ℃, keep it for 15 minutes, and cool it down to 200 ℃ below 5 ℃ / min. |
- |
4.6~5.2 |
5.1~5.5 |
Soft state（R） |
＜570 |
|
Hard state（1/4） |
520~630 |
|||||
|
4J44 |
4.3~5.1 |
4.6~5.2 |
- |
Hard state（1/2） |
590~700 |
|
|
Hard state（3/4） |
600~700 |
|||||
|
Hard state |
＞700 |
|||||
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
