Material	Iron-base SMA alloy
	It is a Shape-Memory Alloy that, after being strained, at a certain temperature revert back to its original shape. The most important Iron based shape memory alloy is iron-manganese-silicon. They base their shape-memory effect on a different physical principle than conventional Shape Memory Alloys. They can recover only less than 4% strain. Important developments are expected in the future.
Category	Metals
Similar materials	Shape memory alloys Nickel-Titanium alloy Copper-base alloys
References	Shape Memory Applications Inc. Nitinol Devices & Components Inc. G. RAU GmbH & Co.
Photo	Thomas Nissen (Computer graphics)
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