Duplex stainless steels have twice the strength of regular austenitic or ferritic stainless steels. Duplex stainless steels have twice the strength of regular austenitic or ferritic stainless steels. Corrosion resistance is primarily determined by the stainless steel's composition, with the most important components being chromium, molybdenum, and nitrogen. Duplex stainless steels are extremely corrosion resistant, and even in chloride and sulfide environments, they have a high resistance to stress corrosion cracking (SCC). When a specific set of conditions exist, such as tensile stress, a corrosive environment, and a sufficiently high temperature, SCC occurs.
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