Data for: Karolczuk, A., Kurek, A. (2025). Machine learning insight into the mean stress impact on fatigue life of additively manufactured 18Ni300 maraging steel under various multiaxial stress paths. International Journal of Fatigue, 198, 109023

The provided Excel file contains the experimental data used in the study: Karolczuk, A., & Kurek, A. (2025). Machine learning insight into the mean stress impact on fatigue life of additively manufactured 18Ni300 maraging steel under various multiaxial stress paths. International Journal of Fatigue, 198, 109023. https://doi.org/10.1016/J.IJFATIGUE.2025.109023. The dataset includes fatigue life results for thin-walled cylindrical specimens made of 18Ni300 maraging steel, produced by Laser Powder Bed Fusion (LPBF). The specimens were tested in the as-built condition (no machining) following a standard aging heat treatment. Fatigue experiments were performed under 22 different axial-torsional stress paths, covering in-phase, out-of-phase, and mean-stress conditions. Tests were carried out using constant-amplitude, sinusoidal loading under force- or torque-control in accordance with ISO 1099. Two testing systems were employed: Instron Electropuls E10000 and Instron 8852. All specimens were tested to complete fracture (separation).