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304 Stainless post weld

Is it always necessary to clean and pickle the heat affected zone of 304 stainless steel weldment to prevent corrosion in a acid dip tank?

Geoff Blewitt
Milfab Industries Custom Fab Shop - Dundas, ON, Canada
2005

It's always a good idea, but no it's not always done. It would depend on the application, as cleaning is not always strictly for improved corrosion resistance. For example, companies that I worked for shipped hundreds of stainless steel rinse tanks for plating lines without post treatment, but I can't imagine shipping a single tank for pharmaceutical mixing without meticulous post treatment.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
2005

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