4J33
4J33 is a ceramic sealing alloy. This alloy is mainly used for matching sealing with ceramics. It is an important sealing structural material in the electric vacuum industry. It has good processing performance and can be made into parts of various complex shapes. Can be welded with copper, steel, nickel and other metals.
Chemical composition
| C % | P % | S % | Mn % | Si % | Ni % | Co % | Fe % |
Min. | - | - | - | - | - | 32.1 | 14.0 | Bal. |
Max. | 0.05 | 0.02 | 0.02 | 0.5 | 0.3 | 33.6 | 15.2 |
Mechanical properties
| Status | Tensile strength (MPa) |
Wire | soft state | <585 |
hard state | >860 | |
Strip | soft state | <540 |
hard state | >700 |
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