Nitinol Springs

erco

Anyone have an affordable source for shape-memory alloy nitinol springs that deform easily at room temp and snap back to their original shape when heated? I'm seeing some "robotics grade" (?) for $15 each!

http://www.ebay.com/itm/NITINOL-55-AAA-Robotics-Grade-Trigger-Spring-120-F-3A-Activation-Temp-Current-/110771402693?pt=LH_DefaultDomain_0&hash=item19ca7d77c5

And here's a 5-pack from Belgium for $35: http://www.ebay.com/itm/5-Nitinol-Shape-Memory-Alloy-springs-45-C-113-F-activation-/260856891878?pt=LH_DefaultDomain_0&hash=item3cbc4849e6

I used to have a bag of 10 of them, free samples from many moons ago, that I can't find now. Nitinol is still a solution in search of a problem. I wanna help, but not until I find 'em for a buck each. Am I dreaming?

Phil Pilgrim (PhiPi)

Mondotronics sells 4-packs for $39.95:

http://www.mondotronics.com/MWNitinol.php

-Phil

erco

Thanks, I saw those. They also have one that snaps back from the heat of your hand: http://www.mondotronics.com/MWDemoCoils.php Talk about finely-tuned transistion temperature!

Pretty cool, but still pricey.

moderngrinding

I work at a small metal fabrication shop - http://www.moderngrinding.com. We manufacture a lot of nitinol and occasionally have extra scrap from projects. If you are looking for any specific nitinol parts, wires, coils, don't hesitate to reach out.

NWCCTV

Can I get in on this offer? I have been looking to try these out to see if they will work in a couple different ideas I have.

Whit

@ erco - this is cool - http://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_357659_-1

and - 3.2mm - $2.50 each, shipping might blow you out though... - http://www.ebay.com/itm/251300059539?hlp=false

NWCCTV

is that 3.2mm extended or compressed. Awful expensive for a mere 1/10th of an inch.