What is S31600 Material? S31600 (316 or 316/316L stainless steel) is a versatile and highly corrosion-resistant type of austenitic stainless steel. Defined by its UNS S31600 designation, it's a fundamental engineering material widely used across demanding industries. Think of it as an upgraded version of the popular 304 stainless steel, offering significantly better performance, especially in harsh environments...