Alloy 42 Tube, ASTM F30, Chinese 4J42,
1. Under condition that the average coefficient of the linear expansion meets the requirements of the standard, the content of nickel and cobalt are allowed to deviate from the stated range;
2. The shape and dimensions of the alloys are in compliance with YB/T5235;
3. It is applied to soft glass-to-metal and ceramic-to-metal seals in electronic component.
Grade |
Chemical Composition (%) |
||||||||||
C |
P |
S |
Mn |
Si |
B |
Al |
Co |
Ni |
Cr |
Fe |
|
≤ | |||||||||||
4J42 |
0.05 |
0.020 |
0.020 |
0.80 |
0.30 |
|
0.10 |
1.0 |
41.5~42.5 |
|
Balance |






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