Ranking of elements of chemical composition of metal

The relationship between the composition of materials, their structure and properties is one of the main issues of materials science. The choice of methods for identifying properties is determined by specific tasks and tools. To study the influence of the chemical composition of materials on the mechanical properties, a method of ranking the elements of the chemical composition of the metal was proposed. Materials and methods. The ranking of the elements of the chemical composition of the metal according to their influence on the criteria of its quality was carried out on the basis of an assessment of the magnitude of the coefficients of the regression equation describing their dependence. Results of the experiment. It has been established that carbon (9,250), manganese (5,000) and chromium (5,000) have the greatest influence on the strength of St6ps steel. To reduce the error in the ranking of the elements of chemical composition, their physico-chemical effect on strength indicators (Т) was taken into account. The resulting mathematical model is adequate according to the criteria of Fisher (F = 1,580) and Kochren (F = 0,380). Conclusions. The ranking of the elements of the chemical composition of St6ps steel in relation to their effect on strength indicators was carried out. This approach allows you to adjust the strength of the metal during its production by adjusting the content of elements of chemical composition.