Question

Figure shows the stress-strain curve for a given material. What are

1. Young’s modulus and

2. approximate yield strength for this material?

Answer 1

1. The graph, implies stress of 150 × 10⁶ N m^-2 corresponds to a strain of 0.002.

Therefore, Young’s modulus is,

2. The yield strength for the material is less than 300 × 10⁶ N m^-2, i.e.. 3 × 10⁸ N m^-2 and greater than 2.5 × 10⁸ N m^-2.