Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ

finishing.com -- The Home Page of the Finishing Industry

The authoritative public forum
for Metal Finishing since 1989
-----

MIL-C-5541 class 1A

2004

I have piece parts coated as MIL-C-5541 Class 1A and it always be seriously scratched, so please help If surface hardness and color difference are strictly specified in MIL-C-5541?

Thanks,

Roger Yu
product engineer - Qingdao, Shandong, China

Chromate conversion coatings for MIL-C 5541 have healing properties enough to migrate over small scratches, but not large ones or abrasions. Abraded and scratched aluminum can be re-coated with the chromate by "brush on" techniques. Electroless nickel will protect against scratches. This is a hard deposit and protective of aluminum.

Don Baudrand
Consultant - Poulsbo, Washington
(Don is co-author of "Plating on Plastics" [on Amazon or AbeBooks affil links]
and "Plating ABS Plastics" [on Amazon or eBay or AbeBooks affil links])
2004

(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: