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This unique material 'remembers' its shape. Bend it when cold, then warm the wire and it forcefully returns to its original shape. Heat and 'train' it to remember a new shape.  

This sample piece of Nitinol memory wire comes with an instruction sheet. Great for laboratory or classroom demonstration.

http://www.youtube.com/watch?v=YQ8nkGLjlkA&feature=related

Also refer to our other Nitinol wire and Flexinol wire materials and kits:

• TS0287 Flexinol wire 0.050 mm x 1 mm
• TS0339 Space wings bio-metal electronic kit
• TS0627 Flexinol wires 1 m x 0.050/ 0.100/ 0,150
• TS1139 Electric piston