In this paper, the phenomenon of springback and how to reduce this phenomenon were studied experimentally and theoretically. To simulate springback effect and analyze the results theoretically, a special program (finite elements (ANSYS 18.1)) has been used. The simulation of the bending sheet metal has been performed by using a rectangular plate of aluminum alloy (3105) and low carbon steel (1020) with three different thickness (1,1.5,2) mm using die profile radius (50) mm. These parameters have been used to study the effect of type and thickness of metal used with die profile radius on the amount spring back and residual stresses after removing the load. The results obtained for aluminum (3105) and low carbon steel (1020) revealing that, the amount of springback is decreasing with increase thickness of the plate. In addition, the results showed that the amount of springback for aluminum plates is higher than low carbon steel in all cases. The experimental results is in a good agreement with numerical results .