Home /
T.O.C.
FAQs
 
Good
Books
Ref.
Libr.
Advertise
Here
Help
Wanted
Current
Q&A's
Search 🔍
the Site

pub
Free personalized metal finishing help!


Aluminum-on-SS thread galling



(-----) January 2, 2008

We need to build a sensor that must be made from stainless steel, most likely 304L and it is to be threaded into a female aluminum thread by our customer. Because we can't control their thread condition we need to apply a coating to our stainless steel part to prevent galling failure of the aluminum. Our pressure port has a straight 12mm thread and uses a copper seal ring. The requirement is for 6 assembly sequences at 20 N-M torque without failure. Without a coating about half the parts tried fail the test by severely galling and failing the aluminum threads. Our SS threads will be machine-cut (not rolled). What would be a good coating to apply in our factory prior to shipping?

Gary Casey
Product designer - Moorpark, California, USA
^


January 2, 2008

I know that silver plating of stainless steel fasteners for insertion in aluminum is a common approach in the electronics fabrication business, but I don't know offhand how many cycles they are good for.

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


January 5, 2008

Maybe too simplistic but, have you considered helicoils?

Guillermo Marrufo
Monterrey, NL, Mexico
^

none
finishing.com is made possible by ...
adv. 
spacer gets replaced with bannerImages

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    -    ©1995-2022 finishing.com, Pine Beach, New Jersey, USA