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FeNi42 Thermal Expansion Alloy
Introduction:
The expansion coefficient and curie point of this FeNi42 thermal expansion alloy increase with the increase of nickel content. This alloy is widely used in electric vacuum industry as sealing structure material.
| Style | Size | ||
| Wire | D=0.1~8mm | ||
| Strip | W= 5~250mm | T= 0.1mm | |
| Foil | W= 10~100mm | T= 0.01~0.1mm | |
| Rod | D=8~100mm | L=50~1000mm | |
| Ni | 41.5~42.5 | Fe | Bal. | Co | - | Si | ≤0.3 |
| Mo | - | Cu | - | Cr | - | Mn | ≤0.8 |
| C | ≤0.05 | P | ≤0.02 | S | ≤0.02 | Al | ≤0.1 |
| Density (g/cm3) | 8.12 |
| Resistivity under 20℃(Ωmm2/m) | 0.61 |
| Thermal conductivity, λ/ W/(m*℃) | 14.6 |
| Curie point, Tc/ ℃ | 360 |
| Elasticity modulus, E/ Gpa | 147 |
| θ/℃ | α1/10-6℃-1 | θ/℃ | α1/10-6℃-1 |
| 20~100 | 5.6 | 20~400 | 5.9 |
| 20~200 | 4.9 | 20~450 | 6.9 |
| 20~300 | 4.8 | 20~500 | 7.8 |
| 20~350 | 4.95 | 20~600 | 9.2 |
| 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 pipe
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