Stainless Steel 317 (UNS S31700) is a molybdenum-bearing austenitic stainless steel with greatly increased resistance to chemical attack as compared to the conventional chromium-nickel austenitic stainless steel pipe such as SS 304 and SS 316L. In addition. SS 317 offers higher creep, stress-to-rupture, and tensile strength at elevated temperatures than conventional stainless steel tubing. SS 317L is a low carbon version of SS 317 grade which provides resistance to sensitization during welding and other thermal processes.Stainless Steel 317L is non-magnetic in the annealed condition but may become slightly magnetic as a result of welding.