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Letter 35069
Galvanizing not qualifying in sst
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Plz. tell me what should I do for galvanaizing it is not
qualifying in sst.
Anwar a. Malik
atlas honda ltd., ---automotive -Karachi, Pakistan
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Too vague, Mr. Malik. The answer could range all the way from "you
may have misread the spec", through "you must make the parts from
plastic because galvanizing can't last that long" :-(
What are the parts, what is the galvanizing process, what is the
SST spec, what is the failure mode? Good luck.
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Ted Mooney, P.E.
finishing.com
Brick, New Jersey
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Salt spray testing is not really very accurate for hot dip galv.,
unless the product is allowed to "age" for at least a year before
testing. This is because the outer most layer of the coating needs to
oxidize and form the patina layer, which is very hard and durable.
Without this, erronious results will likely result. This question is
as old as sst, and is better explained at the American Galvanizers
Association website. They are linked to this site.
David Jaye
Houston, TX, USA
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