-- The Home Page of the Finishing Industry
A website for Serious Education, promoting Aloha,
& the most FUN smiley you can have in metal finishing.
    no popups, no spam
on this site
current topics
topic 1478

Sterilization removes Anodizing Color



We're color anodizing AlMgSi1(99%Al, 1%Si)-parts that have towithstand at least 150 sterilization cycles. The processes used for sterilization are 275°F water steam and a 122°F hydrogen peroxide plasma. Unfortunately, the color comes completely off after a few sterilization cycles.

Our anodizer says an anodized surface will never withstand sterilization.

Thus my questions concerning the subject are:
Is that true? What alternatives do we have?
Is there a more resistant coating for Al-parts in royal blue?


Robert Mosch
- Student


I seriously doubt if any dyed anodize will stand up to 150 cycles of sterilization and most certainly will not when you add a peroxide.

Find an anodizer that does two step anodizing since the color is from a metal salt "plated" into the pores rather than a dye. This is architectural quality.

I read somewhere about someone doing interference color anodizing. There is a possibility that this might work.

Black would probably be a better color.

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.