The formability limits by necking (FLC) were previously determined by Isik et al. (2014) upon combination of the above mentioned tensile tests with Nakajima, hemispherical dome and bulge tests (refer to the ‘V-shaped’ light grey curve in Fig. 2). The Nakajima and hemispherical dome tests were performed in a flexible tool system that was installed in the INSTRON 4507 universal testing machine where the mechanical characterization of the material was carried out, whereas the circular and elliptical bulge tests were performed in an ERICHSEN 145/60 hydraulic universal testing machine.