Breathe easy! No registration or passwords; no maddening pop-up or floating ads :-)

Home /
Search 🔍
the Site
pub Where the world gathers for
plating, anodizing, & finishing Q&As since 1989


Re-plating parts that have holidays

November 29, 2011

What is the procedure for re-plating steel parts made from 12L14 bars without causing hydrogen embrittlement?

Technical Consultant - Ann Arbor, Michigan

November 29, 2011

Hi, Bob.

To my knowledge, 12L14 is a soft, free-machining steel which would not be subject to hydrogen embrittlement due to low carbon content and lack of hardness. But I don't know what you mean by holidays in this context, or what the components are plated with, etc.

I'm guessing that you mean the plating was unsatisfactory (should have been rejected) and that you want to strip it and re-do it. Generally that is not a problem, although it is possible to accidentally pretty much ruin the steel during pretreatment, so there are sometimes parts that can't be practically salvaged.


Ted Mooney,
Ted Mooney, P.E.
Striving to live Aloha - Pine Beach, New Jersey

November 29, 2011

I go along with what Ted said. But, I would fix the cause which is the L IE: lead in the alloy. You will need to go to a fluoboric acid or mixture to remove / activate the lead. No other mineral acid will do it.

James Watts
- Navarre, Florida

November 30, 2011

Good afternoon:
The only reason I can think that hydrogen embrittlement is a concern would be if the parts were case hardened. If you have a copy of the print, maybe they have the heat treat and finishing specs listed?

Steve Bizub
- St Louis, Missouri

(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:

Chemicals &
Consult'g, Train'g
& Software

About/Contact    -    Privacy Policy    -    ©1995-2023, Pine Beach, New Jersey, USA