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Ted Mooney, P.E. RET

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Harsh weather resistance zinc plating vs. hot dip galvanizing

Our company has the ability to silver plating and would like to expand our capabilities
to a electroplating process. After a discussion with our engineering department I was
told that I would need to find a electroplating process that was as durable as the
hot dip galvanizing process that we currently send parts out for. There biggest concern
was weathering on a electroplated piece that will be in many different climates.
Any help would be greatly appreciated.

Scott McKay
Shop Manager - Cleveland,Ohio
May 13, 2009

Hi, Scott. Hot dip galvanizing is a good 10 times as thick as zinc electroplating, and consequently delivers far more protection. You could try an alloy zinc plating, such as zinc nickel or tin-zinc, but it will still be 1/10th as thick and I personally don't think it will prove equivalent. Best bets for in-house processing might be mechanical galvanizing/mechanical plating or thermal diffusion coating.

Regards,

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
May 14, 2009

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