The mechanical properties of the steel is controlled by types

morphology

amounts

size and distribution of inclusions in the Si-Mn steel. Finite element model of Si-Mn alloy with various types and morphologies inclusions have been established to simulate the stress distribution in Si-Mn alloy with inclusions in the condition of tension and to analyze the mechanical behavior of inclusion in macro-mechanical properties based on ANSYS software. It was revealed that the stress concentration and maximum stress in the Si-Mn alloy samples are mainly affected by the gradient of elastic modulus between inclusions and the matrix and the morphologies of the inclusions