Stainless Steel Grade & Application Guides

Choose 304 when the service stays genuinely mild: dry, indoor, or only lightly chloride-exposed. Choose 316L when chloride is part of the cleaning routine, atmosphere, or process stream. The molybdenum gap is small on paper and often decisive in service. If the application moves toward warm seawater or sustained chloride contact, stop comparing 304 and 316; review 2205 duplex.

201 can save money only inside a narrow service window: dry, indoor, decorative work. Once chlorides, food cleaning, outdoor humidity, or uncertain maintenance enter the picture, the savings usually move from procurement to replacement, remediation, or claims. Here is the substitution decision broken down by environment and field verification.