Development and improvement of the performance properties of chrome-molybdenum steel

AISI 4130, commonly known as Chromoly steel, is a low-alloy steel widely used in aerospace, automotive, oil and gas, and defense industries due to its high strength, good ductility, and excellent resistance to fatigue and wear. In line with current economic strategies aimed at reducing industrial imports, this study focuses on the domestic production of Chromoly steel and on improving its mechanical and tribological properties. The proposed approach involves modifying its chemical composition by adding vanadium and niobium, combined with carefully optimized heat treatments. In addition, mechanical surface treatments are being investigated to enhance surface integrity and further improve performance, thereby expanding the range of potential applications for this material.