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Upgrading 304 Stainless corrosion resistance

Are there any finishes/treatments/processes that can be done to "upgrade" 304/304L Stainless parts (i.e. tubes, elbows, bellows ... etc.) into a corrosion resistance state close to that of the 316/316L? The parts are being used in intake and exhaust systems on a fuel cell, so they'll be experiencing temperatures around 80C (max), also water as a by product is present.

Any suggestions are appreciated.

Thanks,

Salman Gharaibeh
ISE Corporation - San Diego, California, USA
2004

Electropolishing will do the most good. Passivation the next. 304 will never equal 316.

James Watts
- Navarre, Florida
2004

304 electropolished has an even better corrosion resistance than 316/316L

Klaas de Boer
- Heerenveen, the Netherlands
2004

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