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Technical Difference between Hot Dip Galvanizing and Electroplating

Please let me know the Quality difference between Hot dip Galvanising Parts and Electroplated Parts of 40 to 50 Micron Parts. Which one is better? Which will effect cost?

Arvind S [last name deleted for privacy by Editor]
CEO - Vapi, Gujarat, India
2007

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2007

Hello, Arvind. For a good insight into this, please patiently search the site as it has been answered in great depth about a dozen times already over the years. But for the quick answer, corrosion resistance is roughly proportional to the thickness and electroplating lends itself to thinner coatings while galvanizing lends itself to thicker coatings. So galvanizing will usually be significantly more expensive but significantly more corrosion resistant.

If you try to upset the "natural" thicknesses for the two technologies, you tend to get neither the better economy nor the better corrosion resistance. 40 to 50 microns is well out of the practical range for zinc electroplating; but if you achieved it, it would be at least as costly as galvanizing. Good luck.

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