The hydroforming processes of sheet metal materials have more advantages than conventional forming processes in terms of the product quality and the drawing ratio, because of they are widely used in mainly automotive, white goods, aerospace industries. In this study, the hydromechanical deep drawing which is one of the hydroforming processes was used for the deep drawability of Erdemir 6112 sheet metal material (thickness 0.5 mm, 0.8 mm, 1.0 mm). Experimental studies were carried out by using the specially designed and manufactured a hydromechanical forming device for the purpose of study. Blank holder force and drawing speed values are held constant (drawing speed 6 mm/s). The effects of the process parameters such as the sheet metal thickness, the blank diameter, the chamber pressure and the die radius on the draw ratio, the draw force, the force consumption and the thickness variation of formed parts were experimentally determined. It was seen that the higher drawing ratios (2.33) and the minimum thicknesses variation of the specimens drawn were obtained when compared with the conventional deep drawing.