Permalloy 4J33
Ni Fe Alloy 4J33 Material grades and equivalents
|
Trademark |
Japan |
Russia |
UNS |
W.Nr |
|
4J33 |
KV-4（Ni33Co17） |
33HК(Ni33Co17) |
|
|
Chemical composition:
|
Alloy |
C |
P |
S |
Mn |
Si |
Ni |
Cr |
Co |
Cu |
Fe |
N |
No |
AI |
|
Max |
|||||||||||||
|
4J33 |
0.05 |
0.02 |
0.02 |
0.05 |
0.3 |
32.1-33.6 |
- |
14-15.2 |
- |
REST |
- |
- |
- |
|
Status code |
State |
Tensile strength/Mpa |
|
R |
Soft state |
＜585 |
|
1 |
Hard state |
＞660 |
4J33 Porcelain Alloy Strip Tensile Strength：
|
Status code |
State |
Tensile strength/Mpa |
|
R |
Soft state |
＜570 |
|
1 |
Hard state |
＞700 |
Hardness of deep-drawn strip：
|
Delivery Status |
Thickness/mm |
Hardness HV |
|
Deep Drawing |
＞2.5 |
≦170 |
|
≦2.5 |
≦165 |
The linear expansion coefficient of the porcelain sealing alloy:
| Grade | Sample heat treatment system |
The average linear expansion coefficient ã/(10-6/k) |
|||
| Heat in a protective atmosphere or vacuum to 900±20°C, keep warm for 1h, cool at a rate of no more than 5°C/min to below 200°C | 20~300℃ | 20~400℃ | 20~500℃ | 20~600℃ | |
|
4J33 |
6.0~6.8 | 6.6~7.4 | 7.8~9.5 | ||
|
4J34 |
6.3~7.1 | ||||
Typical linear expansion coefficient of the alloy：
|
Grade |
The average coefficient of linear expansion of the metal in different temperature ranges ã/(10-6/k) |
||||
|
20~200℃ |
20~300℃ |
20~400℃ |
20~500℃ |
20~600℃ |
|
|
4J33 |
7.1 |
6.5 |
6.3 |
7.1 |
8.5 |
|
4J34 |
7.5 |
6.9 |
6.6 |
6.9 |
8.3 |
Characteristic as below：
Similar to 95% alumina ceramic linear thermal expansion coefficient
Processing conditions and application:
It is suitable for vacuum electronic devices (such as tube, oscillation tube, klystron, magnetron, tube, etc.
