To the forecast of mechanical properties of metal

Forecasting the mechanical properties of metal products is due to the difficulties associated with the influence of many factors. The main factors are the multi-parameter and multi-criteria technology of production. A technique for evaluating the mechanical properties of a metal using a mathematical apparatus for reducing the cost of full-scale experiments is proposed. Methodology. Mathematical planning of experiments is used to evaluate the strength limit of steel type St4kp based on the analysis of the elements of its chemical composition. Results of the experiment. A mathematical model of the strength limit prediction of steel type St4kp is obtained, which makes it possible to carry out its prediction on a given range of chemical composition indicators. According to the F-test, F=1.187 is the model that is adequate at a significance level of =0,05. Conclusions. In the framework of the experiment planning methodology, a model for predicting the strength limit of steel type St4kp has been obtained, which makes it possible quickly predict the quality of the metal by a non-destructive method. This approach can be used as an express methodology for assessing the quality criteria of metal rolling.