This objective of this study was to characterize the stress relaxation of linear elastic NiTi wire in accelerated conditions of bending. The response surface experiment had the following factors and levels: wire diameter (.005”, .009”, .013”), time (3 hrs, 73.5 hrs, 144 hrs), temperature (120 °F, 160 °F, 200 °F), and input strain (.2%, .5%, .8%). The test specimens, 27 runs with 5 samples/run, were wrapped around cylinders and placed in an oven for the requisite time. When removed from the oven and unwrapped they relax to some final curvature over a period of time on the order of hours. The key output in this study was the strain present immediately after removal from the oven, which was called the initial output strain. The curvature of the samples was calculated from x-y position data obtained by floating them on the surface of a water bath containing a grid of scales just below the surface.  The data fit and compared to real time data.