Аңдатпа
The paper presents the results of the development and manufacture, as well as assembly and installation of a test device for testing miniature samples by the SPT method. The results of mechanical tests by tensile and SPT methods of 35X steel material after heat treatment (quenching + tempering) at different tempering temperatures. The evaluation of changes in the strength characteristics of steel grade 35X, depending on the heat treatment mode. The correlation equations between the t/10 method and the yield strength of each 35X steel sample obtained during tensile tests were determined and obtained.