Is CF8M same as SS 316?

CF8M and SS 316 are not identical but are closely related. CF8M is a casting designation for stainless steel that is equivalent to ASTM A351 Grade CF8M, which is a type of austenitic stainless steel often used for valves and fittings. SS 316, or ASTM A276/Austenitic stainless steel 316, is a wrought material commonly used in various applications. Both contain similar alloying elements, but their properties can differ due to their manufacturing processes.