Emissivity of Flexinol Wire: 70°C & 90°C

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The emissivity values for Flexinol wire at 70°C and 90°C are not readily available online, prompting inquiries about manufacturer contact for precise data. There is speculation that educated guesses based on similar materials could provide approximate values. The discussion suggests a potential interest in enhancing contraction rates of Nitinol, noting that existing research has explored this area. It is mentioned that changing to a vacuum environment may not significantly improve contraction times due to minimal effects on convective heat transfer rates. Overall, the thread highlights a gap in specific emissivity data and its implications for material performance.
Jai Sankar
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I searched all over the internet, but I couldn't find it. Does anyone know the emissivity of 70 degrees C and the emissivity of 90 degrees C Flexinol wire?
 
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Have you contacted the manufacturer?
I'd make an educated guess based on similar materials.
I'm guessing from this thread that you're interested in improving contraction rates of Nitinol? There's been quite a lot of research in this area. Convective heat transfer rates don't dramatically alter contraction times so I doubt you'd get a noticeable improvement by going to a vacuum.
 
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