Aloha, fun & authoritative answers -- no cost, no registration, no passwords, no popups
(as an eBay Partner & Amazon Affiliate we earn from qualifying purchases)

Where the
world gathers for metal finishing
Q&As since 1989

-----

Hydrogen Embrittlement in a Phosphating Process

I have a customer that is requesting a 48 hour containment of product that has been through a phos and irilac top-coat finish to allow for hydrogen embrittlement. Is this necessary for this process? I always thought the amount of hydrogen was so low and phos so porous that hydrogen embrittlement was not an issue.

Deborah Ybarra
springs and stampings - Grand Rapids, Michigan

Hi, Deborah. Your customer is probably concerned that once the finish is on the parts, they will no longer be hydrogen permeable. The 48 hour quarantine is to let the hydrogen get out before the paint or topcoat locks it in.

Whether your customer is actually justified in this concern is another matter :-)
-- and something you might want to discuss with the coating manufacturer.

Regards,

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

(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: