This research aimed to investigate the effects of material properties, punching speed, and punch/die clearance on the stamping process without using blank-holder force, in order to make informed decisions during forming process. The study utilized the ABAQUS software for numerical simulation of the sheet metal deformation process, enabling predictions of forming ability, identification of optimal solutions, and resolution of potential machining errors. By combining simulations with Taguchi's orthogonal array, the study analyzed how changes in material properties (SPCC, SUS304, AA6061), punching speed, and punch/die clearance influence the deformation of the sheet metal, with the goal of selecting appropriate parameters.