Italian norms, mainly UNI 11193, foresee a qualification path for containers that will be used for Low and Intermediate Level Waste (LILW), the demonstration of containers durability is needed for an operational lifetime of 50 years: for this reason, the construction material for LILW containers must be tested for their corrosion behavior. Ansaldo Nucleare (ANN) designed and qualified containers for LILW under Italian normative framework. The case study is the cylindrical shape container named CC440 which construction material is AISI 304L, while the bolts are realized in AISI304 quality grade A2-80. The CC440 container was testes foe leakage and durability, in addition the CC440 container filled with concrete was subjected to drop tests at university of Pisa. Tests performed include: i) evaluation of susceptibility to IGSCC and SCC of welded AISI 304L; ii) salt spray with Constant Extension Rate Test (CERT) of 304L and 304 A2-80; iii) evaluation of welding residual stresses on the crack initiation due to corrosion phenomena; and iv) evaluation of galvanic corrosion phenomena of AISI 304L with carbon steel. AISI 304L results fully compliant with requirements of the qualification tasks, while 304 A2-80 showed some weakness in CERT tests. The tested CC440 container is currently delivered by ANN to Sogin for the project of incineration of Caorso spent ion exchange resins, followed by immobilization of residues in CC440 containers as Final Waste Packages (FWP).