Aloha, fun & authoritative answers -- no cost, no registration, no passwords, no popups
(as an eBay Partner & Amazon Affiliate we earn from qualifying purchases)

Where the
world gathers for metal finishing
Q&As since 1989

-----

Is the chipping an anodizing or shipping problem?

March 5, 2012

Q. Hello,

I have enclosed a picture of some parts we received back. They were chromic acid anodized per MIL-A-8625F Type 1 class 1. The material is 2024-T351.
This is the second time they have anodized these parts for us.

58344

Can anyone tell by the pictures if this is chipping due to bad packaging or if this is an anodizing problem.
Unfortunately I did not see the first attempt but I am being told that the first time looked more like a shipping chipping problem then these do.

Thank-you,
Micheline

Micheline Forth
- Rincon, Georgia, USA

This does NOT look like chromic acid anodizing. I looks like Type II or III sulfuric acid anodizing over heat treated 2024 where the copper has cooked out of alloy and flaked off.

Robert H Probert
Robert H Probert Technical Services

Garner, North Carolina

March 7, 2012

March 9, 2012

Thank-you for your response but I am pretty sure they only do chromic anodizing there.

Regards,
Micheline

Micheline Forth
- Rincon, Georgia, USA

(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: