<p>The fracture behavior of spring steel exposed to two simulated corrosive environments was investigated using circumferential notched tensile (CNT) specimens. The research focuses on the effects of stress corrosion cracking (SCC) and hydrogen embrittlement (HE)—two critical environmental degradation mechanisms that affect structural integrity. The influence of SCC and HE was revealed by the astonishing results of tensile testing conducted on notched specimens of spring steel material. It was found that there is a significant decrease in the notched tensile strength, indicating the loss of material due to general corrosion for the pre-hydrogen charged post-corrosion (HES) process. The notch sensitivity was assessed by tensile testing of untreated and treated specimens. The failure behavior was evaluated by notch yield ratio (NYR) and notch strength ratio (NSR). The experimental results indicate that the SCC-treated specimens exhibit the lowest NYR values, reflecting high notch sensitivity due to corrosion-induced defects. Additionally, NSR values demonstrated a decline under combined hydrogen and corrosion exposures, highlighting the enhanced brittleness and reduced resistance to localized plastic deformation. The fractographic analysis indicated that the failure micro-mechanism for all test samples involved a mixed mode of ductile and brittle failure. A scanning electron microscope (SEM) was employed to examine the fractured surfaces in detail.</p>