Evaluation of the mechanical properties of steel under elevated temperature conditionsSredenšek, Klemen (Avtor) Barbič, Luka (Avtor) Praunseis, Zdravko (Avtor) steeltensile testtemperaturechemical analysisstress-strain diagramalloying elementsThis paper presents the influence of elevated temperatures on the mechanical properties of steel with varying iron content and alloying compositions. The paper combines chemical analysis and high-temperature tensile testing to examine how microstructure, chemical composition and temperature affect the yield strength, tensile strength and ductility of steel. Samples of two thicknesses (0.63 mm and 0.50 mm) and three iron levels (85 wt%, 90 wt %, and 97 wt%) were analysed and classified based on their chemical composition. Tensile tests were performed in accordance with ISO 6892-2 within the temperature range of 90 °C to 250 °C, using 20 °C increments. The findings highlight the combined effect of temperature and alloying chemistry on the high-temperature performance of steel, providing valuable insights for material selection in thermally demanding engineering applications.20252026-02-26 12:45:04Neznano97290UDK: 669.1COBISS_ID: 268886019ISSN pri članku: 1855-5748sl