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Ted Mooney, P.E. RET

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Zinc plating vs galvanizing for rust prevention

What is a more effective finish for rust prevention zinc plating or galvanizing?

Thank you.

Lori Andrews
Spencer Environmental - Calera, Alabama
2004

2004

Asked and answered before, Lori, so use the search engine for many additional references--but in brief:

Proponents of galvanizing will claim that it is superior because of the formation of corrosion-fighting zinc-iron intermetallics
Proponents of zinc plating will claim that "zinc is zinc" but will concede that galvanizing is several times thicker and therefore far more corrosion resistant; so hot dip galvanizing by far, although significantly costlier.

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

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