-- The Home Page of the Finishing Industry
23+ years of serious education, promoting Aloha,
& the most fun you can have in metal finishing smiley
    no popups, no spam
on this site
current topics
topic 10071

Wear performance of black anodized aluminum

I am a consulting metallurgist, and have a client who makes a machine in which a black anodized aluminum part is moved against a stationary black anodized aluminum part each time the machine is used. The concern is the long-term wear properties of the parts.

Can anyone out there predict how these parts will perform?

Lisa K. Thomas
- Berkeley, California


There are several factors that contribute to the "wear resistance" of anodized aluminum. Coating type (ie, hard or decorative), coating thickness, surface roughness, whether the parts were sealed or not (if they are dyed, I'm assuming they are sealed, which decreases the hardness of the coating), so.. in a nutshell, its hard to answer your question without more info.

Marc Green
Marc Green
anodizer - Idaho


As an engineering rule, mating wear surfaces should not be of equal hardness. Can one of them be tin plated or silver plated?

Ted Mooney, Teds signature
Ted Mooney, P.E.
Pine Beach, New Jersey


Generally speaking, it is a poor idea to have like metals/finishes rub against each other. Next, black anodizing may be dyed regular anodizing or it could possibly be hard anodizing. You need to be more specific.

Predictions-Depends on force exerted, frequency, lubrication, length of the movement, coating thickness, hardness and thickness of the parent metal and other items. No set answer, other than --it depends.

James Watts
- Navarre, Florida

This public forum has 60,000 threads. If you have a question in mind which seems off topic to this thread, you might prefer to Search the Site

ADD a Comment to THIS thread START a NEW threadView CURRENT TOPICS

Disclaimer: It's not possible to 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 may be deliberately harmful.

  If you need a product/service, please check these Directories:

JobshopsCapital Equip. & Install'nChemicals & Consumables Consult'g, Train'g, SoftwareEnvironmental ComplianceTesting Svcs. & Devices

©1995-2018, Inc., Pine Beach, NJ   -   About   -  Privacy Policy
How Google uses data when you visit this site.