Evaluation of the mechanical properties of steels with regard for the phase structural factor. Part 1. Determination of the fatigue strength in air using static strength data

Within a single methodological approach, we establish correlations between the ultimate and fatigue strengths in tension and bending for 48 types of steel of various structural classes subjected to various procedures of thermal treatment. The ratios of the mean and mean-square differences between the actual values and the values computed according to the most efficient known relation and according to the proposed relation are equal to 2 and 2.5, respectively.