2.2
COATING SYSTEM
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NOTE: Include bracketed text for new construction
only.
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Alternate systems or products will not be considered. All primer,
intermediate coat and topcoat materials shall be supplied by one supplier.
[The entire coating system is intended to be applied in the field.
Alternatively, surface preparation may be accomplished in the shop,
following all temperature, humidity, and testing requirements listed
herein, followed by an application of a hold-primer. Remove all
shop-applied primer prior to final field surface preparation and coating
system application. Adjust all shop preparation to avoid conflicts with
final surface preparation requirements.]
The Military specification epoxy and polyurethane products specified in
this Section do not require approval for listing on the QPL prior to
contract award, as indicated in paragraph 3.2 of MIL-DTL-24441 and
paragraph 3.1 of MIL-PRF-85285. Testing of products by an independent
laboratory to the "QUALIFICATION INSPECTION" requirements of MIL-DTL-24441
and MIL-PRF-85285prior to contract award is required. See specific
submittal requirements in Article entitled "Quality Assurance."
2.2.1
Zinc-Rich Epoxy Primer Coat
Epoxy polyamide, MIL-DTL-24441/19 (Formula 159, Type III).
2.2.2
Epoxy Intermediate Coat
Epoxy polyamide, MIL-DTL-24441/31 (Formula 152, Type IV, White (Tinted)).
Tint to approximately FED-STD-595 color number 27778 parchment using
pigment dispersions prepared for epoxy paint tinting. Manufacturer shall
tint material and appropriately label. All other requirements of this
Military Specification apply.
2.2.3
Polyurethane Topcoat
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NOTE: Check with the activity to determine the
desired topcoat color and finish. Generally, use
white for Navy projects and beige for Air Force
projects. Color number 17925 is white, and 27769
is beige. FAA Safety colors are White 17875 and
Orange 12197. Always specify contrasting colors
between coats.
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Polyurethane coating topcoat of MIL-PRF-85285, Type II, [White FED-STD-595
color number 17925][Beige FED-STD-595 color number 27769 in gloss][White
FED-STD-595 color number 17875, and Orange FED-STD-595 color number 12197].
Modify paragraph 3.6.4 of MIL-PRF-85285, Viscosity and Pot Life, as
follows:
The viscosity of the admixed coating, when tested in accordance with
ASTM D 1200 through a No. 4 Ford cup, shall be as follows:
SECTION 09971
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