-- 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 6019

What Phosphorus Percentage Should Electroless Nickel Plater Hold?


I am considering using electroless Ni-P as a braze filler material. The eutectic is 11 weight percent. What would be a reasonable tolerance in the plated phosphorus concentration for the plater to hold. This will be a vendor operation with the chemistry checked by AA.

Mark S [last name deleted for privacy by Editor]
- Cincinnati Ohio


It is my understanding that most generic EN's start changing P content at about 2 tank turnovers.

Years ago, we used the Elnic process for High P. This was an organic brightened bath and could be a real pain in the --- if you did not take very good care of it. But, we never had a plating caused braze problem in the two years that it was run.

I think that it was one of the many EN companies that Macdermid in Waterbury, CT bought.

I would go to at least 4 of the major EN mfg's and get their opinion directly from the tech services, and then find out who in your general area plates that EN as a job shop.

There have been some huge changes in EN in the last 10 years.

James Watts
- Navarre, Florida


James, Thanks for the tip. MacDermid tells me that the plater should be able to hold 10-12% easily with their Elnic 101.

Mark S [last name deleted for privacy by Editor]
- Cincinnati, Ohio

December 2, 2008

What surface finish (machining finish) is recommended to get a good corrosion protection by Elnic.? Thanks. Sam

Sam Mathew
- New Zealand

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.