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SMA Technology

Single Crystal

The most widely used shape memory material is an alloy of Nickel and Titanium called Nitinol. This particular alloy has excellent electrical and mechanical properties, long fatigue life, and high corrosion resistance. As an actuator, it is capable of up to 5% strain and 50,000 psi recovery stress, resulting in ~1 Joule/gm of work output. Nitinol is readily available in the form of wire, rod, and bar stock with transformation temperature in the range of -100 to +100 Celsius. More recently applications in Micro-Electro-Mechanical-Systems (MEMS) has led to the development of Nitinol in the form of sputter deposited thin film.

For more information about Shape Memory Alloy and its applications, contact TiNi Aerospace.

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