Official Answer
Answer
316 Stainless Steel (UNS S31600) is often chosen for its molybdenum content which provides superior resistance to pitting and crevice corrosion. However, in marine environments, 316 can still be susceptible to Stress Corrosion Cracking (SCC) if the combination of tensile stress, chloride concentration, and temperature (usually $>140^{\circ}F$) is met. For spiral rings, the coiling process and the 'clinging' tension in the groove create a baseline stress. If the environment is highly aggressive, a nickel alloy like Inconel 625 or X-750 may be necessary, as their higher nickel content makes them virtually immune to chloride-induced SCC.
