In framework of non-linear model of straining of shape memory alloys (SMA) in phase and structure transition the solution of non-coupled problems of twisting in active processes of direct martensite transformation, martensite inelasticity and superelasticity is derived. This solution is applied for analysis of the behavior of cylindrical and conical spiral spring from SMA. It is shown that the twisting moment for circular rod and axial load for spring from SMA have some limit values, for witch the analytical expressions are derived. The solutions for twist versus twisting moment and axial displacement versus axial load for cylindrical and conical spring from SMA are derived.