Question

Select the incorrect statement from the following option.

(a) Nitinol is a non-magnetic material

(b) It has a shape memory strain of about 8.5%

(c) It has lower ductility than other shape memory alloys like Au-Cd

(d) It possess excellent corrosion resistant

This question was addressed to me in unit test.

The origin of the question is Functional Materials in portion Materials and their Properties of Engineering Chemistry I

Answer 1

Right choice is (c) It has lower ductility than other shape memory alloys like Au-Cd

The best I can explain: Nitinol has a higher ductility than other shape memory alloys like Au-Cd and can freely revert back to its original shape. All the other options are correct. It is a non-magnetic material and possess excellent corrosion resistant.