The stainless steel grade 317L is regarded as an upgrade or modified form of marine grade stainless steel. Alloy 316, which has a molybdenum concentration below 3%, is steel intended for marine use
Austenitic stainless steel 317L bar is a chromium-nickel alloy that also contains molybdenum. This 317L stainless steel property exhibits increased corrosion resistance in a variety of applications.