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Four different quasi-static flow curve models were investigated to describe flow curves of austenitic (304) and ferritic (430) stainless steel sheets. Uni-axial tensile tests were carried out and material constants of the models were determined by curve fitting technique. Applicability of these models over the uniform plastic deformation region was evaluated according to the value of nonlinear regression parameter R. It was observed, that the predictions made by El-Magd model are in good agreement with the experimental data for both 304 and 430 stainless steel sheets.

Comparison of Quasi-Static Constitutive Equations and Modeling of Flow Curves for Austenitic 304 and Ferritic 430 Stainless Steels