Galvanized vs Cadmium Zinc Plating
Galvanized vs Cadmium Zinc Plating
(OP)
Is there a significant difference between Galvanizing and Cad Zinc plating? We have an installation where the contractor did Cad plated rod and other trades did galvanized. The owner's rep is inquiring if there is a reduced life for Cad Plated vs Galv.
This is way out of my realm, but I am just trying to help them out with locating information.
Scott - this job is in Phx.
T
This is way out of my realm, but I am just trying to help them out with locating information.
Scott - this job is in Phx.
T





RE: Galvanized vs Cadmium Zinc Plating
http://www.burbankplating.com/faq.php
RE: Galvanized vs Cadmium Zinc Plating
I would say its a non issue, especially if the ATR is being installed in a corrosive atmosphere.
RE: Galvanized vs Cadmium Zinc Plating
Thanks for the help. I would give you more MVP stars if I could!!!
Travis
RE: Galvanized vs Cadmium Zinc Plating
Having said all that, note that hot-dip galvanizing may outlast cadmium plating simply because the galvanizing may be 3-8 times thicker. In the links given by cdafd, the comparison is with electroplated zinc -- typically much thinner than galvanized. In Phoenix, galvanized life indoors may be 300 years vs. 50 for cadmium.
But, the major problem with cadmium is toxicity -- it is already banned from automobiles, electronics & government proects (except for a few critical exclusions, mostly on aircraft). Any employee handling camium plated parts must wear gloves (which should be kept segregated), and you must avoid creating vapor or dust (no welding or brazing, limited soldering, no abrasive blasting, limited machining, etc.). So, EPA, OSHA, European Union, China, California, etc. have restrictions.