Advanced High Strength Steels (AHSS) have been intensively applied to automobile components to improve crashworthiness, without increasing the car body weight. The sheet metal forming process is often influenced by springback phenomenon that represents one of the most critical problems that can occur in the car body component fabrication. The aim of the numerical simulation carried out in this paper is to verify the stamping process and the shape of the final components for studying formability and springback of AHSS. A test case of eleven different longeron configurations, obtained by angular variations in the vertical walls was examined. The stamping process was analysed through FEM simulation using an incremental approach for an AHSS material: Dual-Phase (DP 600).