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

HomeFAQsSuggested
Books
Help
Wanteds
Advertise
on this site
FORUM
current topics
The world's most popular metal finishing site, and the internet's friendliest corner

topic 17866

Hydrogen embrittlement?


2002

I have been specifying Teflon coated hi tensile bolts for sub sea use for some time and now need an alternative. Will cad plated studs/bolts cause hydrogen embrittlement if used in a sub sea environment @ about 50 centigrade? Sac anode CP is applied.

Thanks,

Gary Evans
- Perth, Australia


2002

It sounds like you need to perform some testing which simulates this environment. Typically, a notched tensile is prepared with the cad plate and are load tested. A certain percentage of the failure load( depending to what standard you are working to ) is applied (around 75% of the breaking load) statically to another notched tensile for a specified period i.e 8 days. If it breaks before the required duration then the conclusion is hydrogen embrittlement.

M Hogan
- Melbourne


2002

Why do not use titanium alloy bolts?

Andrey Igolkin
- St.Petersburg, Russia

Q, A, or Comment on THIS thread SEARCH for Threads about ... My Topic Not Found: Start NEW Thread

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


©1995-2019 finishing.com, Inc., Pine Beach, NJ   -   About finishing.com   -  Privacy Policy
How Google uses data when you visit this site.