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paint spec

paint spec

paint spec

(OP)
what is the best type of paint for use outside in an area close to the coast?

RE: paint spec

Best coating--hot dipped galvanizing

Next best--inorganic zinc over white metal

RE: paint spec

You asked the $64,000,000 question. I have to evaluate coating proposed for US Navy equipment all the time and I found this table a few years ago that I just love.  It rates paint coatings on steel based on the surface preparation, environment and service life.  I use it to specify performance with statements like: "Coatings shall have a minimum expected life of 15 years in a Seacoast Marine Heavy Industrial envioronment when rated per NACE paper No. 477 or similar nationally recognized rating system".  This reference is a more concise table printed by a paint manufacturer.  I have printed out the actual report but I couldn't find the web reference right off.  It is from the 1996 Inernational Corrosion Conference.

http://ppgamercoatus.ppgpmc.com/psxTechnology/pdf/NACE_477A.pdf

 

RE: paint spec

Interesting table, RockEngineer.  Intriguing that no ratings are shown for galvanising, either as a stand alone coat or as the first of a system.  Since it was produced by a paint manufacturer, I guess that explains it.

RE: paint spec

In a marine environment, that is.

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