Home /
T.O.C.
FAQs
 
Good
Books
Ref.
Libr.
Advertise
Here
Help
Wanted
Current
Q&A's
Search 🔍
the Site
pub Where the world gathers for
plating, anodizing, & finishing Q&As since 1989





-----

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


none
finishing.com is made possible by ...
this text gets replaced with bannerText
spacer gets replaced with bannerImages



(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:

 
Jobshops
Capital
Equipment
Chemicals &
Consumables
Consult'g, Train'g
& Software


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