-- The Home Page of the Finishing Industry
A website for Serious Education, promoting Aloha,
& the most FUN smiley you can have in metal finishing

on this site
current topics
topic 3517

Molybdenum Phosphate plating/coating on steel sheetmetal


I am the Mechanical engineering Supervisor for R & D new product development. Presently we plate our steel units with Zinc Chromate finish and would be interested in alternate plating/coating materials.

In reference to an article in Sep 1999 Assembly magazine, entitled "The Signal for Success", I learned of a company that has replaced Zinc chromate with Molybdenum Phosphate plating. The article notes cost savings, environmental issues, and superior shielding benefits, via the Molybdenum Phosphate plating. I am looking for information & specifications for the Molybdenum Phosphate plating. Also, I would be open to talking with sales/technical reps for obtaining samples and or plating our steel sheet metal product for evaluation. Thanks, Alan Wardlow

Alan Wardlow
- Petaluma, California


If there is a molybdenum phosphate plating, it is extremely new. Moly can be plated , with difficulty, as an alloy with things like nickel, cobalt, etc., but there was no known commercially available way to plate moly a few years ago.

Manganese phosphate is a phosphate coating and not a plating that has been around for years, primarily for a break in compound on friction surfaces. It is normally a coarse rough dark black finish that has good wear properties and decent rust prevention capabilities. It is much higher priced than iron or zinc phosphate.

James Watts
- Navarre, Florida


Alan Emailed me the web site of the company. They are touting a molybdenum infused iron phosphate. I have no idea of what THEY mean by infused and they certainly do not give any details. I am suspect of new products that are full of boasts and are very light on technical data or operating conditions. Molybdenum disulfide has been around for years as a dry film lubricant that is a second operation after phosphating and works well.

It is possible that they did actually develop a means of having some co-deposit with the phosphate, but I would approach it with extreme caution, and run several sets of test parts.

James Watts
- Navarre, Florida

This public forum has 60,000 threads. If you have a question in mind which seems off topic to this thread, you might prefer to Search the Site

ADD a Comment to THIS thread START a NEW threadView CURRENT TOPICS

Disclaimer: It's not possible to 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 may be deliberately harmful.

  If you need a product/service, please check these Directories:

JobshopsCapital Equip. & Install'nChemicals & Consumables Consult'g, Train'g, SoftwareEnvironmental ComplianceTesting Svcs. & Devices

©1995-2018, Inc., Pine Beach, NJ   -   About   -  Privacy Policy
How Google uses data when you visit this site.