MIL-DTL-12276E(MR)
3.2.2 Compositions G and L. The solvent, used with the resin and the solvent supplied as
the thinner, shall be of such a nature that they shall not constitute an undue hazard to
personnel in the application of the varnish. Evidence to this effect shall be subject to review
by departmental medical authority.
3.2.3 Composition L. The solvent used with the resin and the solvent supplied as the
thinner shall meet the requirements listed below, when tested as described in 4.3.6.
a. Aromatic compounds of eight or more carbon atoms exclusive of ethyl benzene
shall amount to a maximum of 8%. These plus ethyl benzene, toluene and
ketones shall amount to a maximum of 20% of the solvent with the provision that
all of these items must be present in the solvent.
b. Solvents with an olefinic or cyclo-olefinic type of unsaturation shall test at less
than 1%.
3.3 Color.
3.3.1 Type I and III. Type I and III materials shall be clear or the natural color of the
varnish. There shall be no pigment added and the use of soluble organic dyes is not
permissible.
3.3.2 Type II. No color requirements are applicable. Materials shall be clear or pigmented.
The use of soluble organic dye is permissible.
3.4 Solids contents. The minimum solids content for types I and III varnish, as received,
and then tested in accordance with 4.3.5, shall be 35 percent.
3.5 Absence of film defects. The varnish shall produce a smooth, continuous film with no
visible pinholes, craters, or blisters when tested as specified in 4.3.3.
3.6 Film adhesion and flexibility. The dried film on metal shall be tough, elastic and shall
not chip, flake, scale, or show poor adhesion to SAE 1010 steel panels when tested as
specified in 4.3.4.
3.7 Resistance to chemicals and solvents. The varnish when applied to steel panels as
specified in 4.3.2 and baked as prescribed in each of the three schedules listed in 4.3.1 shall
not be softened or otherwise deteriorated when immersed in toluene, glacial acetic acid,
ammonium hydroxide, ethyl alcohol or ether and tested as specified in 4.3.6. In addition,
type II varnish shall not be softened, blistered, or otherwise deteriorated by boiling in bis-
(beta chloroethyl) ether when tested as specified in 4.3.7.
3.8 Corrosion resistance. There shall be no rusting of the panels, nor peeling or undercutting
of the coating when subjected to salt spray test for 264 hours (11 days) as specified in 4.3.8.
3.9 Abrasion resistance.
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