Metal finishing Q&As since 1989

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Aluminum dyes

2006

Hi Guys:

Has anybody came across an aluminum dye that they are happy with ? We are making the move to trivalent and away from yellow - but would like a little more color change than the blues seem to give us. Also is there a problem sealing the dyes after application.

Thanks

John Doyle
PM Industries - Springdale, Arkansas

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U.S. Specialty Color has dyes for chromated aluminum in reds, green, orange, violet, blue & black. Don't know how well they work with trivalent coatings, but MIL-DTL-81706B-A1 allows higher temperatures for trivalent Cr (Type II) coatings than for hex.Cr, so better sealing should be possible. Check with the mfr.

Ken Vlach [deceased]
- Goleta, California
Finishing.com honored Ken for his countless carefully researched responses. He passed away May 14, 2015.
Rest in peace, Ken. Thank you for your hard work which the finishing world, and we at finishing.com, continue to benefit from.
2006

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2006

Hi!

I have been working with this dyes and they are so good and cheap.

Good luck,

Andrea Jaimes
Mediimplantes Ltda - Bucaramanga, Santader, Colombia