Experimental determination of Tensile Strain-Hardening Exponent and Strength Coefficient of the S355J2+N steel grade

Abstract

The purpose of this paper is to determine tensile strain-hardening exponent and strength coefficient of the S355J2+N steel grade utilizes stress-strain data obtained in a uniaxial tension test. Tensile data were obtained in continuous and rate-controlled manner via displacement control. Ramberg-Osgood relationship was used to describe the uniaxial tension behaviour of the S355J2+N steel grade. The tensile strain-hardening exponent and strength coefficient are determined from an empirical representation over the relation between the true-stress versus true-strain.