This research paper investigates the forming behavior of double-layer material blanks in hydrostatic forming processes. Instead of two layers being rolled together, the cases of two layers being stacked on top of each other and frictionally interacting with each other are investigated. Numerical simulation was employed to investigate the effects of layer stacking sequence, blank holder force on the thickness distribution, and the final shape of the produced components. According to FE results, the numerical simulation method can predict the fracture region of the cylindrical cup. The results of this investigation provide insights for optimizing manufacturing processes and enhancing the quality of formed components.