Nirosta 4427 is a molybdenum, 18-11-3 type austenitic stainless steel with molybdenum content at the high end of the standard range for type 316 stainless steel. With a higher sulfur content, this grade is specifically aimed at machining. The alloy is often referred to as Type 316F in the United States. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-881. Producer or source: ThyssenKrupp Nirosta GmbH.