Stainless Steel Selection
304 vs. 316 Stainless Steel
For a material to be considered stainless steel, at least 10.5% of the make-up must be chromium. Additional alloys typically include nickel, titanium, aluminum, copper, nitrogen, phosphorous, selenium and molybdenum. The key difference between the 304 and the 316 is the addition of molybdenum in the 316. It is the molybdenum that enhances corrosion resistance in environments rich in salt air and chloride – giving 316L the moniker of “marine grade” stainless steel.