Does "X-it Precoat" meet AMS2473G

A. Unfortunately I don't have a copy of AMS2473 G to walk you through the issue, but for MIL-C-5541 chromate conversion coating you had to use a product that was on the qualified products list QPL-81706 [on DLA]; I would expect that AMS2473 G might also make reference to a qualified products list. If that is the case, the question becomes not whether some proprietary product "meets or exceeds" the requirement, but whether in fact it is listed on the QPL or it isn't.

Please note that Alodine is a trade name for a whole line of processes, not a specification for a particular process; so while there may have been concern expressed about a particular Alodine process because it, for example, contained hexavalent chromium, it is very unlikely that the USAF was discouraging the use of all products from probably the world's largest conversion chemistry provider.

For a very extensive analysis of the issue, including detailed information about X-it Precoat, Alodine, and several other products, please download the report "Non-chromate Aluminum Pretreatments" from the Joint Group on Pollution Prevention. But again please note that a favorable review in a report like this does not necessarily mean that a product described there can be used in lieu of a specified finish.