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topic 8120

Salt-spray performance of zinc electroplating


I am Program Manager for the Conduit and Cable Fittings Technical Committee of the National Electrical Manufacturers Association.

One of our industry groups is composed of manufacturers of electrical conduit and cable support hardware, such as fasteners, hangers, and beam clamps. We are attempting to make a recommendation to Underwriters Laboratories on performance requirements for zinc protective coatings subjected to salt spray atmospheres, using the test procedures described in ASTM B117 [affil. link to spec at Techstreet] .

I am looking for technical papers or reports that can be used as substantiation for recommending salt-spray exposure performance requirements for parts in used in outdoor/wet locations and for indoor/dry locations.

Any information you can provide would be of help.

Mike L [last name deleted for privacy by Editor]
NEMA - Rosslyn, VA USA


Mike - I am the chairman of ASTM G01.05 Laboratory Corrosion Tests, which has jurisdiction over B117. We would be happy to set up a task group to help with your efforts. Information regarding salt spray testing for electroplating applications could possibly be found on this web site or others in the metal finishing field. ASTM also publishes a manual called Corrosion which may be useful to you. Information regarding ASTM meetings can be found on their web site.

Cynthia L. Meade
- Sylvania, Ohio, USA

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