It is clear from the given graph that for stress 150 × 106 N/m2, strain is 0.002.
Hence, Young’s modulus for the given material is 7.5 ×1010 N/m2.
b) The yield strength of a material is the maximum stress that the material can sustain without crossing the elastic limit
It is clear from the given graph that the approximate yield strength of this material is 300 × 106 Nm/2 or 3 × 108 N/m2.
