No passwords, No popups, No cost, No AI:
we earn from 'affiliate link' purchases, making the site possible

Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ

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

  The authoritative public forum
  for Metal Finishing since 1989

-----

Soldering issue when using a Silver-bearing Soldering Alloy

Q. Hello,
We currently use a Tin-Copper (0.7% by weight) alloy to solder the leads of electronic devices onto circuit boards.
We are evaluating a different Tin-Silver (3.0%) -Copper (0.5) alloy for use to possibly replace the Tin-Copper alloy and have seen one specific lead where this new solder alloy does not wet to. This lead is made of Stainless 304 as the base metal, with a Nickel Strike over it, followed by 50 µinches of plated Tin. All other lead types we have soldered, solder properly including other plated stainless parts. We have done XRF on the surface of the part and have found that the Nickel is no longer there. What is interesting is that this same material does not have a problem when using the Tin-Copper soldering alloy. Any ideas of why this particular part would have a problem?

Joe Cassavini
- Clarkston, Washington
July 8, 2021

(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: