6.25 Figure 6.21 shows the tensile engineering stress-strain behavior for a steel alloy. (a) What is the modulus of elasticity? (b) What is the proportional limit? (c) What is the yield strength at a strain off- set of 0.002? (d) What is the tensile strength? Figure 6.21 Tensile 600 stress-strain behavior for a steel alloy. 500 Stress (MPa) 400 500 400 300 200 Stress (MPa) 300 200 100 100 0.000 0.002 0.004 0.006 Strain 0 1 0.00 0.04 0.08 0.12 0.16 0.20 Strain