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karthikkanniyappan
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Join Date: Apr 2012
Posts: 2

1000 Hours Salt Spray Time in Screw

04/10/2012 1:07 AM

Does the Zinc plating with electrocoat processed screw withstand 1000 hrs salt spray life?
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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
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#1

Re: 1000 Hours Salt Spray Time in Screw

04/10/2012 7:56 AM

Zinc-plated and yellow-passivated woodscrews are sold for that purpose.

http://www.screwfix.com/p/turbogold-selection-pack-750pcs/14933#product_additional_details_container (usual disclaimer)

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lyn
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#2

Re: 1000 Hours Salt Spray Time in Screw

04/11/2012 9:21 AM

Only if is have been certified to meet the requirements of MIL-STD-810.
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polymerfan
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Join Date: Jun 2011
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#3

Re: 1000 Hours Salt Spray Time in Screw

04/11/2012 10:06 AM

First, what "salt spray" test are you trying to pass? There are differences in the test methods, salt types, & acceptance criteria. Second, I would suggest talking to fastener suppliers to see if they already have test data available for their coatings. Also, different applications/regions of the world will have different restricted substances that you need to keep in mind.
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