Letter 39060

AMS, MIL-SPEC CONVERSION TABLES [Kansas] 

January 18, 2006

I am hoping that someone can direct me to a publication, website, etc... that will show substitutions and or equivalent specs from Mil-Spec to AMS or vica versa. Any suggestions?

Thanks,

James Timoteo
machine company - Wichita, KS

You're treading on dangerous territory. While the title of the specifications might be comparable, the processes, requirements, test methodology, sampling plans, etc. are typically quite different. Just take EN for example: ASTM B 733 divides electroless nickel into 5 grades according to phosphorus content; AMS-2405 [link is to spec at TechStreet] differentiates electroless nickel it covers by using the term "LOW PHOS" in its title and states this as those EN's with 8% or less (this certainly isn't LOW PHOS EN as we know it today!); and the MIL spec makes no mention of phos content. Also, the MIL spec requires EN to have 100 hours of corrosion resistance while AMS2404 [link is to spec at TechStreet] only requires 48 hours. So is EN per Mil-C-26074 [link is to spec at TechStreet] or EN per AMS 2404 or EN per ASTM B 733 "equivalent" or "comparable" - NOT LIKELY!! I've turned your inquiry over to my Sales Engineer who will send you want you're looking for - we use an internal cheat sheet BUT we know the limitations! Tread carefully.

Milt Stevenson, Jr. Anoplate Corp Syracuse, NY, USA

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