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MMPDS-01<br />

31 January 2003<br />

300<br />

B =<br />

2<br />

0.5<br />

1<br />

250<br />

0, ∞<br />

Maximum Principal Stress, ksi<br />

200<br />

150<br />

100<br />

50<br />

0<br />

0 4 8 12 16 20 24<br />

Strain, 0.001 in./in.<br />

Figure 2.3.1.3.6(f). Typical biaxial stress-strain curves at room temperature for AISI<br />

4340 alloy <strong>steel</strong> (machined thin-wall cylinders, axial direction = longitudinal direction<br />

of bar stock), F tu<br />

= 260 ksi. A biaxial ratio B of zero corresponds to the hoop direction.<br />

2-43

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