High-strength steels (HSS) are materials designed to combine light weight and high load-bearing capacity, widely used in complex structures such as bridges, infrastructure, and offshore platforms. Through processes such as hot rolling and hardening, they achieve high mechanical properties. However, in saline environments, they are subject to stress corrosion cracking (SCC), aggravated by welding, which alters the microstructure and generates residual stresses. This study analyses the behaviour of welded joints in STRENX700E subjected to SCC in the laboratory, comparing the results with samples tested in air, to assess the impact of welding on corrosion resistance and provide useful insights for applications in marine environments.