Stress (MPa) 500 400 300 200 100 0.000 0.002 0.004 0.006 Strain Figure 6.22 6.27 A load of 85,000 N (19,100 lb) is applied to a cylindrical specimen of a steel alloy (displaying the stress-strain behavior shown in Figure 6.22 above) that has a cross-sectional diameter of 15 mm (0.59 in.). applied? (a) Will the specimen experience elastic and/or plastic deformation? Why? (b) If the original specimen length is 250 mm (10 in.), how much will it increase in length when this load is 6.28 A bar of a steel alloy that exhibits the stress-strain behavior shown in Figure 6.22 above in 6.25 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?