Description
NiFe Alloy 4J33
NiFe 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 |
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.
