Statistical Correlations Between Chemical Composition and Mechanical Properties of A516 Grade 65 Steel

Abstract

In order to respond to required demands associated to certain operation conditions, the steels used in petroleum, petrochemical and chemical processing industries must have significant improved mechanical properties. These can be obtained by constant monitoring and controlling of parameters of steelmaking process. The determining factors responsible for improving the mechanical properties of steel are chemical composition, purity and the technological parameters. The injection of an inert gas or by vacuum exposure is effective in reducing non-metallic inclusions and for chemical composition control. These treatments are comprised in the secondary metallurgy and require special installations. It is cheaper to create a modeling tool that can be used for the prediction of mechanical properties, directly in the steel production process by variating its chemical composition. In this paper, by using the linear regression technique, the relationships between certain mechanical properties and the chemical composition of steel A516 Grade 65 have been determined.