A bar of a steel alloy that exhibits the stress-strain behavior shown in Figure 6.21 is subjected to a tensile load; the specimen is 300 mm (12 in.) long, and of square cross section 4.5 mm (0.175 in.) on a side.
(a) Compute the magnitude of the load necessary to produce an elongation of 0.45 mm (0.018 in.).
(b) What will be the deformation after the load has been released?