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Alternative to zinc electroplating for disposable gas cartridges

We currently use gas cartridges with a finishing with zinc electroplating.
Those cartridges are disposable, with a shelf life of less than one year.
Is there alternative to protect the steel from the corrosion with a cheaper solution ( coating ?...)

Thanks for your support

Jean-Luc

Jean-Luc Stavaux
engineer - Leuven
August 13, 2009

Hi, Jean-Luc. Zinc is the least expensive metallic finish, but there's always black oxide, or paint over iron phosphate.

Regards,

Ted Mooney, P.E.
Striving to live Aloha
(Ted can offer longterm or instant help)
finishing.com - Pine Beach, New Jersey
August , 2009

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