Authoritative Answers, Fun, & Aloha -- no cost, no passwords, no popups
(as an eBay Partner & Amazon Affiliate we earn from qualifying purchases)

Home /
Site 🔍
pub     mobile?
Metal finishing Q&As since 1989


Plating/Coating Chemistry


Where can I find the chemical composition of various platings and coatings; for instance, zinc phosphate, iron manganese phosphate, zinc with yellow dichromate, etc. I have to report the percentage of each element to a customers materials database. Thanks.

Jeff Colbert
Dana Corp - Fort Wayne, Indiana


This question comes up once in a blue moon, and to do a good job, you will need some basic texts with a chapter on each coating or group of coatings.

It also doesn't hurt to search the literature for relevant articles which often have this kind of information.

Also, you will need the MSDS of each chemical used in your process, for instance, if your yellow chromate has chromic acid, sulphates, and nitrates in the formulation, then you will see that the gel usually contains some of all of these, plus trivalent chromium from the reaction with the zinc metal that is being treated, etc. (some of these have trace amounts of fluoride, it depends on how detailed you want to get). The more stuff you say is in your coating, the more questions you will get from your customer. It could get very tricky, I don't envy you. See if you can get someone else to do it, but I am afraid you are it.

It will take you a few hours to a few weeks to do a decent job.

Good luck,

tom pullizzi animated    tomPullizziSignature
Tom Pullizzi
Falls Township, Pennsylvania

(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

Q, A, or Comment on THIS thread -or- Start a NEW Thread

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories:

Chemicals &
& Software

About/Contact  -  Privacy Policy  -  ©1995-2024, Pine Beach, New Jersey, USA  -  about "affil links"