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

-----

Sealed hard coat corrosion resistance vs coating thickness

I am interested in hard coating 6061 for corrosion resistance and am planning a sodium dichromate seal. The hard coat will be according to MIL-A-8625 / MIL-PRF-8625 [on DLA]F, Type III, Class 1. For dimensional tolerancing reasons I would like to keep the coat thin, but a having trouble finding a reference for corrosion resistance vs sealed hard coat thickness. It seems that if its sealed the corrosion resistance should not be affected by thickness.

Does anyone have any info?

Thanks!

Sandie Klute
- New River, Virginia

Why hard coat? If corrosion resistance is your aim why not class I or II?

Martin Trigg-Hogarth
surface treatment shop - Stroud, Glos, England

(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: