Hi all!
What is the relation between young's modulus and yield strength?
In the stress strain curves for our sample indicated the Youngs modulus is above 400000 MPa. I think this is not ok, since the Youngs Modulus is a constant factor, which should always be at around 200000 MPa. However, the value of yield strength (0.5% EUL) meet the expected value of YS.
Please give advice about this matter? Is that related to error strain reading? Can we say that our YS already OK and neglecting the value of Young's Modulus that given by our Machine?
Note. the material is low alloy steel