Introduction: How to Demonstrate Temperature Properties of Muscle Wire (Nitinol)

Sometimes called the Smart Alloy, Muscle Wire or Memory Metal, is an alloy that "remembers" it shape. You can reshape the wire, but when heated it returns to the preset shape. Ever wonder how someone bends a spoon with their mind? Same metal.

This demo straighten the spring so it is suined. Then attach a battery to it and it goes back to the spring shape.


scottbates (author)2011-04-28

how is this an instructable?

Bassman12593 (author)2010-10-26

Is there any kind of muscle wire that works between room temperature and a cooler temperature?

itsmanofpopsicle (author)2010-06-27

What happens if you bend it while it is still connected to the battery? Will it return to its shape?

timmy1234s (author)2008-08-30

where can you get the wire?

Pie Ninja (author)timmy1234s2009-10-14

They sell it on unitednuclear, or you could try eBay

JCO72 (author)2009-10-09

In the 80's my family owned a beer distributorship.  My brother was the general manager and he had a wire that he would pull out of his pocket straight, then hold a lighter to it, then it would change to spell out "Coors"

wenpherd (author)2008-12-01

how can make it a shape that it will return to

Derin (author)2008-02-11

Can you bend it again after it comes to its own shape?

codongolev (author)Derin2008-07-09

yeah. it just does that over and over until it breaks.

Derin (author)codongolev2008-07-09

Oh ok.Niice.

codongolev (author)Derin2008-07-10

that's actually how anti-scald faucets work. they have a stretched spring inside them, and when the water gets too hot it pulls it closed.

Derin (author)codongolev2008-07-10

Oh ok

garden burger (author)2008-07-03

i always love watching things blow up

GorillazMiko (author)2008-01-25

Once again, cool. Are you a science/ chemistry teacher or something? You're a genius.

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