Stainless Steel Grades Chart Pdf. There’s a fourth category, too. Newer to the world of stainless steel grades is the duplex category.

Drawing from the best of both metal types, duplex stainless steels boast strength, durability, and improved resistance to chlorides. Newer to the world of stainless steel grades is the duplex category. Duplex stainless steels represent a combination of austenitic and ferritic stainless steels.