316L S31603 316S11 316S13 stainless steel weld fittings stub end
Type 316 alloy is considered suitable for some marine environment applications, such as ship rails and hardware, and the exterior walls of buildings near the ocean that are exposed to salt spray. Type 316 stainless steel shows no evidence of corrosion in the 100-hour, 5% salt spray (ASTM-B-117) test.
Type 316L has the same desirable corrosion resistance and mechanical properties as the corresponding high carbon Type 316, and offers additional advantages in highly corrosive applications where intergranular corrosion is a hazard.
Type 316 stainless steel is an austenitic grade with added molybdenum. Compared to Type 304, this alloy has higher corrosion resistance, especially in chloride environments. Type 316L is intended for welding applications.