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Backward Strain at Yield — Discontinuous Yielding/YPE Material

During a recent customer visit, a concern was raised about a turnaround point on the graph that they had not previously seen. Following a bit of investigation, the customer was producing galvanized steel of various grades, some of which was aged. The graph below shows a magnified view of the fairly aggressive upper yield point (UYS or ReH), which results in an almost immediate drop in stress.

Posted By David Fry OnJun 10, 2014 10:10 AM