A study has been made of springback after the forming of a simple flange in CRLC, SAE 950X and 980X, and a dual-phase steel; the variables investigated were material thickness, die gap, anvil radius and prior cold work. It was found that springback increased as the strength of the steel, anvil radius and die gap increased and as the sheet thickness decreased. Dual-phase steel which has tensile strength similar to that of SAE 980X steel initially had springback characteristics similar to SAE 950X steel. However, after about 15 to 20 percent cold work, the dual-phase and the SAE 980X steels exhibit similar amounts of springback. It was also noted that for a given material springback is a unique function of the material-thickness-to-anvil-radius ratio. The results of this investigation can be used to predict the variation in springback expected from the spread in strength usually observed for a given grade of steel, and to allocate the amount of springback between material and die effects when making materials substitutions.