Question: A mild steel rod of 12 mm diameter was tested for tensile strength, with the gauge length of 60 mm. Following were the observations: (a)

A mild steel rod of 12 mm diameter was tested for tensile strength, with the gauge length of 60 mm. Following were the observations:

(a) Final length = 78 mm

(b) Final diameter = 7 mm

(c) Yield load = 34 kN

(d) Ultimate load = 61 kN

Calculate (a) yield stress, (b) ultimate tensile stress, (c) percentage reduction, and (d) percentage elongation.

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