No passwords, No popups, No AI, No cost:
we earn from your affiliate purchases

Home /
T.O.C.
Fun
FAQs
Good
Books
Ref.
Libr.
Adver-
tise
Help
Wanted
Current
Q&A's
Site 🔍
Search
ted_yosem
Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ
finishing.com -- The Home Page of the Finishing Industry


  pub
  The authoritative public forum
  for Metal Finishing since 1989

-----

Blue anodize appearance for different material




Q. Our customer ask to keep exactly the same appearance after 7075T6 and 6061T6 blue anodized. Is that reasonable ?

Gene Ho
- Tai-chung , Taiwan
2006


A. As long as he maintains the same chemical analysis for 7075 as 6061 :-)

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



2006

At lower thicknesses the 6061 and 7075 come out very close to the same color, however, as thickness increases the 6061 tends towards tan-black, and the 7075 tends towards blue-gray. This is because of the different alloying ingredients. You may override this tendency with higher free acid, perhaps 200 gm/L, higher temperature up to about 75 F, and lower current density, all three parameters make a larger pore and would adsorb more blue dye and bring the two alloys closer together.

robert probert
Robert H Probert
Robert H Probert Technical Services
supporting advertiser
Garner, North Carolina
probertbanner
2006


thumbs up signThanks for the help everyone!

Gene Ho
- Tai-chung, Taiwan
2006




(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:

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


About/Contact  -  Privacy Policy  -  ©1995-2024 finishing.com, Pine Beach, New Jersey, USA  -  about "affil links"