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topic 8970

5 Step Process Prior to Powder Coat


Good day,

I am detailing a design (to be made from CRS) for a client and the finish requested is Powder Coat. The client indicated using the "5 step" process prior to the Powder Coat finish. In prior designs, when Powder Coat was specified, we relied on the vendor to properly prepare the part(s) prior to the finish.

So, not being familiar with the "5 step" term, are we to assume a vendor will know what we mean and not sand blast the parts, which would not be acceptable? Is there an industry standard terminolgy for the "5 step" process?

Thank you for your attention in this matter.

Robert Batkin
- Lakeland, Florida, USA


The traditional definition of a 5 step pretreatment process is :

1)alkaline wash


3)iron phosphate


5)final rinse/seal

The dry-off can be done in the powder curing oven to help minimize flash rusting. Hope this helps get you pointed in the right direction.

Dan Brewer
chemical process supplier - Gurnee, Illinois

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