In this work, we evaluate springback using U-form stretch bending tests. Tests are carried out on aluminum
alloy test pieces using an experimental set up made in our laboratory. This apparatus can be
mounted on a tensile testing machine and gives the possibility to vary several parameters. We show
the role played by certain factors such as die radius of curvature, blank holding force (BHF) and stretching
depth. Springback and sliding at extremities are strongly influenced by these technological and geometrical
parameters. In this work we also show the gradual decrease of springback with the increase of
stretching depth. The radius of curvature of the die can remarkably influence the two stages of
springbac