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

Problem? Solution? Chime right in!
-- this is a no-registration site.

-----

"Chromating 6061 T6511"



2005

For creating better corrosion resistance (against ASTM ASTM G85 [affil. link to spec at Techstreet] -94 A3 (SWAAT)) on 6061 T6511, I am considering conversion chromating. Since it concerns an automotive application, hexavalent chromium is out of the question. Compromising surface finish quality is also not allowed (since the product has sealing surfaces for O-rings).

- Is there a conversion chromating process that meets above requirements?
- Would anodizing meet the above requirements better?
- For volumes >1 million pieces. a year for products 30x20x20 mm what would be cheaper: anodizing or chromating?
- What is the difference between transparent and yellow chromating?

Thanks in advance for all replies.

Jaap Hoftijzer
Automotive Supplier - The Netherlands
^


2005

Anodizing will provide superior corrosion (and scratch) resistance and will cost more. I'll get some argument on this one...but, if there is no color, there is no chromate film, so "clear" chromate is a myth. No color = no chromate.

jeffrey holmes
Jeffrey Holmes, CEF
Spartanburg, South Carolina
^


2005

Although it is a myth, do you know the difference between so-called clear chromate conversion coating and yellow chromate conversion coating?

Jaap Hoftijzer
Automotive Supplier - The Netherlands
^

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

Q, A, or Comment on THIS thread SEARCH for Threads about ... My Topic Not Found: Start 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    -    ©1995-2021 finishing.com, Pine Beach, New Jersey, USA