Estimation of maximum inclusion size and fatigue strength in high-strength ADF1 steel

There are two statistic methods, statistics of extreme values (SEV) and generalized Pareto distribution (GPD), which estimate the size of maximum inclusion in high-strength steel. The characteristic size of the maximum inclusion was evaluated by above two methods in different volumes of ADF1 steel, and the fatigue strength was estimated according to the characteristic size of inclusion in different volumes of ADF1 steel and compared with the experimental results.