MIL-PRF-24635E
4.5.26 Recoat. The remaining two test panels exposed in accordance with 4.5.25 shall be rinsed with cold tap
water at nominal tap pressure for a period of 5 to 10 minutes without rubbing the surface in a manner that would
disturb any chalking. The test panels shall then be dried for 24 hours at referee conditions. The coating being tested
shall then be brush applied to ½ of each of the two panels and the overcoated panels shall be cured for 48 hours at
referee conditions. For coatings with a total system DFT greater than or equal to 15 mils, the adhesion of the
overcoated panel shall be determined in accordance with ASTM D3359, Method A. For coatings with a total system
DFT less than 15 mils, the adhesion of the overcoated panels shall be determined in accordance with ASTM D3359,
Method B. If the total DFT is between 5 to 10 mils, the spacing between the lines in the Method B cross-hatch shall
be doubled. If the total DFT is between 10 to 15 mils, the Method B line spacing shall be tripled.
4.5.27 Serviceability. The coating shall be applied in NAVSEA designated or approved representative areas
aboard a U.S. Naval vessel for a minimum service period of 6 months.
4.5.28 Serviceability (type V and type VI as anchor chain coatings). The requirements of 3.5.28 shall be
verified after exposing the test panels to the following sequence of exposures when coated in accordance with the
manufacturer's instructions:
a.
Immerse for 250 hours in sea water or the artificial equivalent.
b.
After drying, expose for 500 hours in accordance with the ASTM B117 test Method.
c.
Allow the test panel to dry at laboratory conditions for 250 hours.
Check for compliance with 3.5.28.
5. PACKAGING
5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in the contract or
order (see 6.2). When packaging of materiel is to be performed by DoD or in-house contractor personnel, these
personnel need to contact the responsible packaging activity to ascertain packaging requirements. Packaging
requirements are maintained by the Inventory Control Point's packaging activities within the Military Service or
Defense Agency, or within the military service's system commands. Packaging data retrieval is available from the
managing Military Department's or Defense Agency's automated packaging files, CD-ROM products, or by
contacting the responsible packaging activity.
6. NOTES
(This section contains information of a general or explanatory nature that may be helpful, but is not mandatory.)
6.1 Intended use. This specification covers high grade coatings intended for use on exterior topside surfaces
that are highly weather-resistant and characterized by excellent color and gloss retention, good drying, freedom from
aftertack, and good flexibility. These coatings are non-lead, non-chromate, and non-asbestos containing materials.
These coatings have been formulated to comply with air pollution regulations which allow a maximum VOC of 250
grams of solvent minus water per liter of paint (2.08 lb/gal) as delivered, and with California regulations which
allow a maximum VOC of 100 g/L. These products are not to be thinned for any means of application. The coating
may be applied with brush, roller or spray. Type II coatings may be used where maximum VOC limits are allowed
to exceed 250 g/L, but may not exceed 340 g/L.
6.2 Acquisition requirements. Acquisition documents should specify the following:
a.
Title, number, and date of this specification.
b.
Color (FED-STD-595 color designation nomenclature recommended), Type, Class, and Grade required (see
c.
d.
Whether Material Safety Data Sheets (MSDS) and ASTM F718 data sheets are required with each
e.
shipment (see 6.4).
Batch VOC certification (see 6.7).
f.
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