317L 317L is a molybdenum containing austenitic stainless steel, with improved corrosion resistance over 304/304L and 316/316L stainless steel. The increased levels of chromium, nickel and molybdenum over 316L stainless steel improve chloride pitting resistance and general corrosion.
AISI SS 317 / 317L S31700 / S31703 1.4449 / 1.4438 StardustStainless Steel 317 was designed to be a higher strength alternative to the 316 grades. Composed of larger amounts of chromium, nickel and molybdenum, SS 317 also is more corrosion resistant compared to 316, and tougher than Type 304.
Grade 304, 316, and 317 stainless steel are all considered austenitic stainless steel alloys. These alloys all share some similar properties, such as high strength, corrosion resistance, and high concentrations of chromium and nickel.