No passwords, no registration, no paywalls, no popups, no AI

As an Amazon Associate & eBay Partner we earn from affil links

finishing.com -- The Home Page of the Finishing Industry

Search our quarter-million Q&As

Home of the finishing HOTLINE since 1989

-----

Phosphating on steel parts

What is the correct procedure & composition of phosphating bath? Is there any difference between zinc phosphating & black phosphating? Is there any post treatment required to get best result on alloy steels?

Masood Akhter
- Abu Dhabi , U.A.E.

The procedure of Zinc Phosphating is big and long story and here we cannot give you all the details , I suggest you will read Metal Finishing Directory for it , and there you will get some idea for Zinc Phosphate. The difference between Black Zinc Phosphate and usual Zinc Phosphate is the color of the coating . The Zinc Phosphate's color is from light gray to dark gray . The black zinc phosphate is achieved by one stage before the Zinc Phosphate stage which create the black zinc phosphate coating.

Yehuda Blau
YB Plating Engineering and Quality - Haifa Israel

Sorry! Finishing.com is temporarily Read-Only.
Ted Mooney is retiring but I have several offers to take it over.
We're working hard to make sure we find it the best new home.

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: