Air Temp Nitinol

[memoryman]

No; there is no bending or twisting with Nitinol; just 3 dimensional expansion/contraction. Bi-metal does not have a memory effect. They are totally different.

[Cherryman]

No; there is no bending or twisting with Nitinol; just 3 dimensional expansion/contraction. Bi-metal does not have a memory effect. They are totally different.

I beg to differ. It's all the same.


With Respect C'man


Edit:  You do realize that Bi-Metal


A: example :  a simpel temperature Bi-metal ( in for example a gas fired camping cooking stove)  is a bi-metal and does not leave the gas on after its first use. ) iow Memory


B: The word Bi-metal does NOT specify the actual chosen metals


C: It's not rocket science, a metal (or actually any substance) has a certain length (expansion)  at a certain temperature, combine two different metals.. there will be an interaction you can exploit, or trouble you, when experience a delta temp.

[Cherryman]

Combine these two charts wisely and pick your own for your project suitable Bi-metal

[memoryman]

If you want to believe that bi-metal and Nitinol are the same or very similar, go ahead. I have no desire to convince you.

[ramset]

Well
it is my impression that reaction time in NiTinol both on and off are amazingly fast as well as Strong and the metallurgy to enable these attributes are quite unique , some sort of crystalline alignment which is very hard to do . falls into a higher level of SMA's [Shape metal alloys]

but I do agree that all similar materials [bimetal]should be familiar to experimenters to perhaps mix attributes in the development of more advanced mechanisms ,

to me this is a fascinating area ,especially with Smoky's observation on multiple programming of the same wire
and the ability to train the wire at will for different tasks .as well as NiTinols limitless cycle times that grow in strength over time.

the repurposing of  Nitinol in endless experimental variations and programming  is the closest thing to magic we could play with [and teach with]

a science which needs growth and evolution ..towards new materials which react in ever more user friendly environments...
perhaps real metal muscles which can work with the tiny stimulus our own muscles do ? 

what fun indeed !![building one test bed as I type this]