(a) Comparison of the experimental and numerical values of the springblack angle for the different geometries tested in Cu-ETP (thickness 0.8 mm) in the rolling direction (0°/RD); (b) Numerical values of the angles measured on the final geometry of the part obtained at the end of all the bending and springback stages, the value of the angle of stage 1 corresponds to the one before calibration, and comparison with the available experimental data.