Compressive Residual Stress in Flange is the stress formed after plastic deformation, if the residue at a location has a value of -100 MPa, it is said to be compressive residual stress. And is denoted by Fr. Compressive Residual Stress in Flange is usually measured using the Megapascal for Stress. Note that the value of Compressive Residual Stress in Flange is always negative.