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Letter 6084
Stainless Steel Preparation
beforepainting
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We are going to be powdercoating a stainless steel part which
willbe used on boats and subjected to saltwater and to fuel. We are
goingto use a zinc rich epoxy primer and a TGIC polyester topcoat,
but Iam unsure as to the best approach on preparing the stainless
steel.Any help would be appreciated.
Melanie Rogers
- Orlando FL US
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My Dear Melanie;
You want to do what to the stainless steel? It sounds almost
sacrilegious to be powder coating stainless. If it's corrosion
protection you are seeking I would recommend you consider
electropolishing. You will suffer no problems with delamination and
it will provide you with both an aesthetic and durable finish.

Joel Levinsohn
- Sydney, Australia
+
Sir:
We have had excellent results on S.S. for underocean applications
by blasting to a N.A.C.E. #1 -white metal blast and applying a single
heavy coat (3 mils) of your top coat. If U.V. stability isn't
essential,definently use an epoxy pc.
Robert Modisette
- Carpinteria, CA, USA
++
Generally stainless steel only needs to be cleaned before
painting. Specific treatments are not required but can be used.
Ron Zeeman
continuous coating - Brampton, ON, CAN
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