Brite Zinc coatings meet and exceed the performance requirements of the following MIL specs:
MIL-P-46105 (MR) Primer Coating, Weld-Through, Zinc-Rich
One type of ready-mixed, single-package, epoxy-based, zinc-rich primer for use on ferrous metal surfaces prior to spot welding. Key performance requirements include: Epoxy Resin Content: Positive
Flash Point: Not under 80 deg. F
Air Drying: Set to touch within 10 minutes
Dry Hard: Within 20 minutes
Baking at 250 deg. F: Dry through within 60 mins.
Condition in Container: Mix to smooth homogenous state
Storage Stability: 6 months
Spraying Properties: Satisfactorily
Flexibility: Pass 1/8-inch mandrel
Adhesion: Pass tape test
Welding Characteristics: Satisfactory resistance
Water Resistance: No rusting, blistering, or softening after 250 hours immersion
Salt-Spray Resistance: 250 hours, show no more than slight rusting, not over 5 scattered blisters 1 mm in diameter MIL-P-26915B Primer Coating, Zinc Dust Pigmented for Steel Surfaces
A zinc dust primer for use on steel surfaces, be compatible with aliphatic polyurethane and enamel topcoats MIL-C-83286, suitable for use under air pollution regulations. Type I air-dry cure, Class A- Ready mixed single-package. Key performance requirements include: Water Content: Not over 0.25%
Coarse particles: Not over 0.5% of pigment
Mixing: Easily mixed by hand to form homogenous mass
Settling: None after 5 days of standing undisturbed
Aging: C1.B primer be equal to unaged material as tested
Compatibility with thinner: 1:1 with mineral spirits TT-T-291, or 1 part of TT-T-548 toluene to 4 parts primer
Storage Stability: one year at 80-100 deg. F, meeting all spec requirements
Applications: Spraying over cleaned and treated steel, at least 2.0 mils film thickness in one cross coat application
Drying: Dust free within 20 minutes, dry through in one hour
Flexibility: Pass 1/4 inch mandrel
Lifting: No lifting between topcoat and primer
Adhesion: Pass wet tape test
Resistance Properties: (water, hydrocarbon, synthetic fluid, humidity, accel. weathering, salt spray, heat, corrosion) see full spec.
Material Safety Data Sheet: Submitted to qualifying agency