Iron Nickel Alloy Tube Alloy 52 Feni52 for Glass Sealing and Hermetic Seals with 0.5mm-8.0mm OD
TK41152 Feni52 Alloy Tube Alloy 52 OD 8.0-0.5mm -Glass Sealing 52 for Hermetic Seals
Product Description
The iron-nickel fixed expansion alloy is a series of fixed expansion alloys that can be matched with soft glass and ceramics with different expansion coefficients in a given temperature range by adjusting the nickel content. The expansion coefficient and Curie point increase with the increase of nickel content. This combination gold is a widely used sealing structure material in the electric vacuum industry
Chemical Composition
| Grade | C% | P% | S% | Mn% | Si% | Cu% | Cr% | Mo% | Ni% | Co% | Fe% |
| TK41152 | Max 0.05 | Max 0.020 | Max 0.020 | Max 0.80 | Max 0.30 | / | / | / | 51.5~52.5 | / | Bal. |
Specifications
| Grade | Common Name | Common Name |
| TK41152 | Vacodil520 | NILO 52 |
Average Linear Expansion Coefficient:
| Grade | α1/10-6ºC-1 | |||||||
| 20~100ºC | 20~200ºC | 20~300ºC | 20~350ºC | 20~400ºC | 20~450ºC | 20~500ºC | 20~600ºC | |
| TK41152 | 10.3 | 10.4 | 10.2 | 10.3 | 10.3 | 10.3 | 10.3 | 10.8 |
Grain size of TK41152
The grain size of the alloy deep-drawing belt should not be less than level 7, and the grain size less than level 7 should not exceed 10% of the area. When the average grain size of the strip with a thickness of less than 0.13mm is estimated, the number of grains along the thickness of the strip should be no less than 8.
Welding performance of TK41152
The combined gold has good welding performance and can be brazed and spot welded. The combination of gold and soft glass should be pre-oxidized before sealing.
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