How would you call out Alodining?
How would you call out Alodining?
(OP)
We would like to Alodine (Iridite, Chromate Conversion) coat some panels on an enclosure. We'd like to maintain maximum electrical conductivity.
What is a proper way to call this out in our drawing notes?
Thanks,
Tim
What is a proper way to call this out in our drawing notes?
Thanks,
Tim





RE: How would you call out Alodining?
RE: How would you call out Alodining?
RE: How would you call out Alodining?
Mil-C-5541 can be found at http://131.82.253.19/docimages/0000\50\74\5499.PD0 . It has some good information regarding factors (in addition to coating thickness) that can affect conductivity. I'm not suggesting you specify an "aerospace" specification if you don't need to (use the ASTM Spec TVP cited if it meets your needs), but there's some good info in the MIL document.
A proprietary (sole source) non-chromated, "environmentally friendly" conversion coating that is reported to have good electrical conductivity properties is available from Sanchem (http://www.sanchem.com/safegard_cc.html). There may be others. If the "colorless" nature of the Class 3 ASTM coating doesn't appeal to you, you may want to talk to them.