-- The Home Page of the Finishing Industry
23+ years of serious education, promoting Aloha,
& the most fun you can have in metal finishing smiley
    no popups, no spam
on this site
current topics
topic 12111

Iron-Phosphate thickness check


We need to check the thickness of zinc-iron phosphate coatings on parts we receive from suppliers. The parts are too heavy to weigh on an analytical balance, in any case we are more interested in checking thickness than coating weight. Our spec for thickness is 15-30 microns. Any suggestions?

Bill Martin
- Decatur, Illinois, USA


The industry accepted method is weight, not thickness. Thickness will vary depending on the type of steel. Have your phosphater run test panels (3"x 10" or smaller) same time as the parts. A lab can find the weight per sq. inch. If you REALLY need to check thickness, maybe a lab with an x-ray fluoresence machine could do thickness. I am sure this method would cost a whole lot more.

Bill Hemp
tech svc. w/ chemical supplier - Grand Rapids, Michigan

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.