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topic 10556

Iridite finish spec for aluminum


(2001)

My company has inherited a design including aluminum parts which are specified to be finished according to "IRIDITE 14-2". The shop that is now making the parts doesn't recognize this spec, and I have been unable to find it on the web or in any of the reference books I looked at.

Can someone enlighten me as to what this spec is?

Thomas McCarty
- Lake Forest, California, USA


First of two simultaneous responses (2001)

Iridite is a MacDermid trade name for chromate conversion coatings, Thomas. Note that it has a single 'r', which is probably why you had difficulty with your search.

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


Second of two simultaneous responses (2001)

Tom,

14-2 is not a spec it is a product, originally from Allied Kelite. It is a gold chromate on Aluminum. The spec is Mil-C-5541 [link by ed. to spec at TechStreet]. And 14-2 meets it . There are non-chrome substitutes for 14-2 such as Sanchem 3500.

drew nosti
Drew Nosti, CEF
Anodize USA - Ladson, South Carolina


First of two simultaneous responses (2001)

Iridite 14-2 is a trade name for a chem film process like Alodine 1200.

What you could do is to change the spec to AMS C5541 [withdrawn / link is to spec at TechStreet] class 1A (replaced Mil-C-5541 class 1A).

This will get you from a trade name to an internationally recognised standard.

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


Second of two simultaneous responses(2001)

Iridite 14-2 is a product.

There are many products used for chromate conversion aka chem film aka chemical conversion coatings.

Iridite 14-2 is just one of many products used to produce these coatings.

This happens to be the product we use here.

David A. Kraft
- Long Island City, New York



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