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Metal Resistancy to 5% ferric chloride Solution

Hi,

We are trying to design a pipeline for WWTP and we will use PVC piping, we will have 35% ferric chloride which we will dilute to 5% and then may contact with some metals. Which metal is best to use this diluted solution? I made a small research almost all metals except titanium is bad, maybe Hastelloy C, you think 5% of ferric chloride ⇦this on eBay or Amazon [affil links] would effect cast iron or stainless stell so bad? Any suggestions would be great...Thanks

Serdar Umur
Engineering consultancy,design - Chicago, Illinois, USA
2006

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