MIL-DTL-15090 Enamel, Equipment, Light Gray \(Navy Formula No.111\)This specification covers a 250-gram per liter \(maximum\) \(2.08 pounds per gallon [maximum]\) volatile organic content \(VOC\) complying paint. The paint is a light gray equipment enamel \(Navy Formula Number 111\) for shipboard use as a topcoat on equipment, machinery, furniture and electrical equipment, such as switchboard installations. This product may be used wherever VOC air pollution regulations apply. The light gray equipment enamel covered by this specification is an air dry, solvent base coating for use in all interior dry areas including applications covered by reactor plant painting schedules. This product is supplied in a single can and used as supplied without thinning.

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MIL-DTL-15090E

4.7.10 Water resistance. Spray apply a 0.076 + 0.025 mm (0.003 + 0.001 inch) film of the enamel on a panel

prepared as specified in 4.6. Cure at room temperature [approximately 22 �C (72 �F)] for 48 hours. Immerse 50

percent of the panel in room temperature distilled water for 24 hours. The condition shall be as specified in 3.6.8

4.7.11 Compatibility.

4.7.11.1 Compatibility with topcoats. Prepare and prime three panels as specified in 4.6. To the first panel

apply a 0.051- to 0.076-mm (0.002- to 0.003-inch; 2- to 3-mil) coating (topcoat) of paint manufactured to

MIL-PRF-24635; to the second panel apply a 0.051- to 0.076-mm (0.002- to 0.003-inch; 2- to 3-mil) topcoat of

paint qualified to MIL-PRF-24763, to the third panel apply a 0.051- to 0.076-mm (0.002- to 0.003-inch; 2- to 3-mil)

topcoat of the MIL-DTL-15090 test enamel produced to this specification. After drying (curing the three panels for

48 hours at 50 C (122 F), cool to ambient laboratory conditions and apply a 0.051- to 0.076-mm (0.002- to 0.003-

inch; 2- to 3-mil) topcoat of the test enamel. Examine for blistering, wrinkling, or peeling of the enamel

immediately after topcoat application and 48 hours after topcoat application. Check adhesion 48 hours after topcoat

application by Test Method B of ASTM D3359. Enamel condition shall be as specified in 3.6.7 and 3.6.9.1.

4.7.11.2 Compatibility with primers. Prepare and prime three panels as specified in 4.6. To the first panel

apply a 0.051 to 0.076 mm (2 to 3 mils) primer coating TT-P-645; the second panel with 0.051 to 0.076 mm (2 to 3

mils) of MIL-DTL-24441, F.150, Type III paint and to the third panel apply 0.051 to 0.076 mm (2 to 3 mils) of

MIL-DTL-24441, F.150, Type IV paint. Apply one coat at 0.051- to 0.076-mm (2-3 mils) DFT of the test enamel.

Examine for blistering, wrinkling, or peeling of the enamel immediately after topcoat application and 48 hours after

topcoat application. Check adhesion 48 hours after topcoat application by Test Method B of ASTM D3359.

Enamel condition shall be as specified in 3.6.7 and 3.6.9.2.

4.7.12 Surface appearance. Prepare a flow-out film of the enamel by pouring approximately 15 mL of the

mixed enamel across a glass panel near the upper edge, while the panel is lying flat. Then tilt the panel to allow the

coating to spread over all but the upper edge. Next, place the panel in an almost vertical position and allow to drain.

After 24 hours, examine the film for compliance with 3.6.10. Coarse particles, skins, and agglomerates are

characterized by being larger than the dispersed pigment in particle size and extending beyond the plane of the film.

4.7.13 Film hardness. To a steel panel prepared and primed in accordance with 4.6, apply 0.051 to 0.076 mm

(2 to 3 mils) of the test enamel and dry for seven days at laboratory conditions [21�2 �C (70�5 �F) and 50�5 percent

relative humidity]. Test in accordance with table VI and evaluate for compliance with 3.6.11.

4.8 Toxicity. The enamel shall be evaluated by the Navy and Marine Corps Public Health Center (NMCPHC)

using the administrative Health Hazard Assessment (HHA). Sufficient data to permit an HHA of the product shall

be provided by the manufacturer/distributor to the NMCPHC. To obtain current technical information requirements

specified by the NMCPHC, see 6.8. A manufacturer of material shall disclose the formulation of his product to the

Navy and Marine Corps Public Health Center (NMCPHC), ATTN: Industrial Hygiene Department, Acquisition

Technical Support Division, 620 John Paul Jones Circle, Suite 1100, Portsmouth, VA 23708-2103. The disclosure

of proprietary information, which shall be held in confidence by the NMCPHC, shall include:

Name, formula, and approximate percentage by mass and volume of each ingredient in the product;

Results of any toxicological testing of the product;

Identification of its pyrolysis products; and

d. Any such other information as may be needed to permit an accurate appraisal of any toxicity problem

associated with the handling, storage, application, use, removal, or disposal of the material.

4.9 Off-gassing. The enamel shall be tested by a Government approved testing facility in accordance with

NAVSEA S9510-AB-ATM-010 chapter titled "Material Control Program." The results shall be submitted to the

Government for evaluation and approval for use (see 3.10 and 6.9).