In industrial applications where chlorides or acids are present, material selection dictates equipment longevity. While 316L stainless steel serves well in many cases, its vulnerability to localized pitting and chloride stress corrosion cracking (Cl-SCC) often demands a more robust solution.

Duplex 2205 (UNS S32205) addresses these limitations through its unique metallurgical structure. The material's balanced austenitic-ferritic microstructure provides three key advantages where 316L proves inadequate:

• SCC Resistance: The ferritic phase provides inherent immunity to chloride-induced stress corrosion cracking

• Enhanced Pitting Resistance: With a PREN of 34-39, it offers superior performance in seawater and chemical environments

• Structural Efficiency: Double the yield strength of 316L enables lighter designs through reduced wall thickness

The specification of Duplex 2205 represents not merely a material upgrade, but a fundamental engineering decision for applications where environmental conditions exceed the capabilities of standard austenitic stainless steels.