The data shown in the accompanying table were obtained from a tensile test of high-strength steel. The test specimen had a diameter of 0.505 in. and a gage length of 2.00 in. (see figure for Prob. 1.3-3). At fracture, the elongation between the gage marks was 0.12 in. and the minimum diameter was 0.42 in.
Plot the conventional stress-strain curve for the steel and determine the proportional limit, modulus of elasticity (i.e., the slope of the initial part of the stress-strain curve), yield stress at 0.1% offset, ultimate stress, percent elongation in 2.00 in., and percent reduction in area.
TENSILE-TEST DATA FOR PROBLEM 1.3-7
Load (lb) Elongation (in.)
1,000........................0.0002
2,000........................0.0006
6,000........................0.0019
10,000.......................0.0033
12,000.......................0.0039
12,900.......................0.0043
13,400.......................0.0047
13,600.......................0.0054
13,800.......................0.0063
14,000.......................0.0090
14,400.......................0.0102
15,200.......................0.0130
16,800.......................0.0230
18,400.......................0.0336
20,000.......................0.0507
22,400.......................0.1108
22,600.....................Fracture