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FeNi50 Thermal Expansion Alloy
Introduction:
FeNi50 thermal expansion alloy is a controlled expansion alloy obtained by adjusting the nickel content. And its expansion coefficient and curie point increase with the increase of nickel content. This thermal expansion alloy is a widely used sealing material in electric vacuum industry.
| Style | Size | ||
| Wire | D=0.1~8mm | ||
| Strip | W= 5~250mm | T= 0.1mm | |
| Foil | W= 10~100mm | T= 0.01~0.1mm | |
| Rod | Dia=8~100mm | L=50~1000mm | |
| Ni | 49.5~50.5 | Fe | Bal. | Co | 1.0 | Si | ≤0.3 |
| Mo | - | Cu | - | Cr | - | Mn | ≤0.8 |
| C | ≤0.05 | P | ≤0.02 | S | ≤0.02 | Al | ≤0.1 |
| Density (g/cm3) | 8.21 |
| Resistivity under 20℃(Ωmm2/m) | 0.44 |
| Thermal conductivity, λ/ W/(m*℃) | 16.7 |
| Curie point, Tc/ ℃ | 500 |
| Elasticity modulus, E/ Gpa | 158 |
| θ/℃ | α1/10-6℃-1 | θ/℃ | α1/10-6℃-1 |
| 20~100 | 9.8 | 20~400 | 9.4 |
| 20~200 | 9.8 | 20~450 | 9.4 |
| 20~300 | 9.5 | 20~500 | 9.7 |
| 20~350 | 9.4 | 20~600 | 10.6 |
| Tensile Strength (Mpa) | Elongation (%) |
| 490 | 35 |
| Annealing | Be heated to 900 ±20℃ in hydrogen environment. |
| Heat preservation (h) | 1h |
| Cooling | Be cooled below 200℃ at a speed of no more than 5 ℃ / min. |
Index
iron nickel alloy, alloy plate
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