TYPE: Single pack, premixed, ready-to-apply, liquid organic zinc compound
GENERAL PROPERTIES: ZRC® is a high-quality cold galvanizing compound based on a trade secret organic binder which affords true galvanic anti-corrosion protection to metals. The dried film of ZRC is 95% metallic zinc. Because of the uniqueness of the formulation, ZRC is the only coating of its type to be recognized under the Component Program of Underwriter's Laboratories, Inc.
RECOMMENDED USES: ZRC is widely used without topcoat in place of hot-dip galvanizing. Also used as a high-performance base coat with a variety of topcoats. Used for repair of damaged hot-dip galvanizing Galvalume® and zinc metallizing, regalvanizing worn hot-dip galvanizing, repair of weldments, and repair of damaged inorganic zinc coatings. Excellent for long-term protection of structural steel, water and waste facilities, power plants, transmission towers and antennae, steel decking and bridges, and numerous OEM uses.
SUBSTRATES: Apply to properly prepared carbon steel, cast iron, hot-dip galvanized, and aluminum surfaces.
NOT RECOMMENDED FOR: Contact with potable water, strong acids or strong alkalis
TEMPERATURE RESISTANCE (non-immersion):
Continuous: 350°F max/177°C max
Non-Continuous: 750°F max/399°C max
SALT FOG EXPOSURE: 2,852 Hours (ASTM B117)
PROHESION/QUV EXPOSURE: 2,000 Hours (ASTM D5894)
VOC: 3.3 Lbs/gal (385 gms/Ltr) (ASTM D3960)
SOLIDS CONTENT: % Solids of Liquid Coating — 86% (by weight)/52% (by volume)
METALLIC ZINC CONTENT: 95% by weight in dry film. Zinc Dust used specified as ASTM D 520 Type III.
RECOMMENDED FILM THICKNESS PER COAT:
Wet: 3.0 mils (76 µ) Dry: 1.5 mils (38 µ)
400 Ft ²/Gal @ 1.5 mil dry film thickness
3.4 M ² /Kg @ 38 µ dry film thickness
MINIMUM SHELF LIFE:
Liquid — 3 Years
Aerosol — 1 Year
FINISH: Flat light grey
FLASH POINT: 104°F (40°C) (SETA method, ASTM D3278)
WEIGHT PER GALLON: 24 Lbs (ASTM D1475)
MASS DENSITY: 2.797 gms/cm cubed
VISCOSITY: 1900 cps. Brookfield RVT spindle #5 @ 100 RPM, 25°C
PENCIL HARDNESS: 2H (ASTM D3363)
IMPACT RESISTANCE: Greater than 30 inch lbs.
(Extrusion) (per ASTM-D2794)
ELECTRICAL CONDUCTIVITY: 73 million ohms per square @ 3 mils dry (resistivity).
ABRASION RESISTANCE: 11.5 liters per dry mil (tested at 3 dry mils) (per ASTM-D968-51)
POT LIFE: At least 24 hours
WATER IMMERSION: 100° F (38° C)
SURFACE PREPARATION: Dependent upon surface conditions and intended service. Typical examples are as follows:
|Grease & Oils
||Solvent to clean SSPC-SP1
||Power tool clean to SSPC-SP3 or SSPC-SP11 (SIS St 2 or 3)
|Mill Scale, Paint or Heavy Rust
||Sandblast to SSPC-SP6 (commercial)
(SIS Sa 2)
||(100°F (38°C) Maximum) Sandblast to SSPC-SP10(near white)
(SIS Sa 2.5)
BRUSH/ROLLER/AEROSOL: Apply as received in container.
SPRAY (low pressure compressor type):
|Atomized Air Pressure
||50 Lbs (1.3 kg/cm²)
||15 to 20 Lbs (0.4-0.6 kg/cm²)
|Orifice of Tip
||0.080 inches (0.20 cm)
||4:1 ZRC:XXX Thinner -OR- 16:1 ZRC:Xylol/Xylene
SPRAY (airless type):
||1/2" (1.3 cm)(I.D.) Airless Type
|Orifice of Tip
||60° - .026 in. (0.07 cm)
|Type of Tip
||Tungsten carbide, reversing
||Complete removal is recommended. However, if screens are employed, use no less than 30 mesh.
||No reduction required.
||Connect hose directly to pump ensuring a hose length of 50 ft. max. Use least procedure possible. Start at 1500 lbs. (680 kg) and increase as required for good spraying.
CLEAN UP: ZRC XXX Thinner or Xylol/Xylene
DRY TIME (set to touch): When ambient air dried, 20-30 minutes @ 1.5 mil (38 µ) thickness
RECOAT TIME (2nd coat of ZRC): 12 hours. Under certain conditions, recoat time can be reduced. Please contact manufacturer for specifics.
TOPCOATING: After 24-48 hours, ZRC may be topcoated with acrylic, chlorinated rubber, epoxy, urethane or vinyl type products. DO NOT TOPCOAT WITH ALKYD, ALKYD-MODIFIED ACRYLIC, OR LACQUER TYPE PRODUCTS.