Prior to the end of the QPL program Water Soluble fluxes were accepted and
listed as qualified to QQS-571-E. (section 2 of Mil-F-14256F) We obtained
the qualification during the QQS571-F rev. and prior to the cancellation of
the Q rating. If you would like more information feel free to contact me off
TechNet as I do not wish to mix Technical and commercial issues one line.
Thanks
VBK
Vincent B. Kinol CQE
Applications Engineer
OMG Americas Microbond
[log in to unmask]
Phone 919-544-8090 x298
FAX 919-544-8090


                -----Original Message-----
                From:   Kasprzak, Bill (esd) US
[SMTP:[log in to unmask]]
                Sent:   Tuesday, August 17, 1999 5:38 PM
                To:     [log in to unmask]
                Subject:        Re: [TN] Semi-Aqueous Cleaner...

                Eric:

                Not necessarily so.

                We use water soluble flux on both NHB5300 and Mil-Std-2000A
programs. Without going into a huge amount of detail in this forum, I'll
make the following points.
                #1 - Mil-Std-2000A no longer exists, your customer must be
informed of this reality. However, if they insist, the last known QPL
(Qualified ProductsList) for Mil-F-14256 (Another obsolete spec referenced
in the 2000 spec) is dated sometime in early 1995. Since you have to pick a
qualified RMA flux from this list, there are absolutely no guarantees that
the formulations for the same flux today is exactly the same as it was 4
years ago. You can apply the same rationale to many of the reference specs
in Mil-std-2000A.

                #2 - The use of non-rosin fluxes was allowed in
Mil-Std-2000A. One was simply to get your customer to approve the flux,
other options involved testing. This testing roughly parallels the same kind
of testing required when using a non-rosin flux on J-Std-001A. We have one
customer ourselves, still living in the past with Mil-std-2000A, we are
using the data used to qualify for J-Std-001A as evidence of compliance.

                #3 - In NHB5300, Chapter 9 addresses the use of Water
Soluble flux. We simply requested approval from the procuring agency based
on the strength of the testing we did for J-std-001A. We got approval. In
closing, both specs do not require the use of R or RMA. Certainly they are
the preferred since no specific testing other than an Omega Meter type test
is required for use. There are alternatives.


                Bill Kasprzak
                Moog Inc.
                 ----------
                From: Eric Kalgren
                To: [log in to unmask]
                Subject: Re: [TN] Semi-Aqueous Cleaner...
                Date: Tuesday, August 17, 1999 10:23AM

                We use RMA because NASA's NHB5300 and the MIL-STD-2000A both
require the use of R or RMA flux.  Anything else has to be specially
approved by the military and NASA.  And despite the fact that I have heard
that both documents have been superceded, most of our contracts hold us to
those standards.

                Eric Kalgren
                BFGoodrich Aerospace
                Data Systems Division
                (505) 938-5139
                [log in to unmask]


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