[Watch the video] Nitinol, an alloy of nickel and titanium, is known for its unique properties of shape memory and superelasticity. When bent or deformed, nitinol can “remember” its original shape and return to it when heated, making it invaluable in applications like medical stents and eyeglass frames. Its superelasticity allows it to undergo significant strain without permanent deformation, ideal for devices that endure repetitive stress.