Single pack, premixed, ready-to-apply, liquid organic zinc compound
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.
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.
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)
2,000 Hours (ASTM D5894)
3.3 Lbs/gal (385 gms/Ltr) (ASTM D3960)
Suggested Specification Verbiage
CSI Format Specification
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)
At least 24 hours
100° F (38° C)
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)
Apply as received in container.
SPRAY (low pressure compressor type):
SPRAY (airless 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
||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.
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.
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.
Prices may be obtained from your ZRC Distributor or ZRC Customer Service Representative at 1-800-831-3275 (domestic US only), 1-781-319-0400, by fax at 1-781-319-0404 or Online Inquiry Form
ZRC is stocked worldwide through authorized distributors.
APPROXIMATE SHIPPING WEIGHT:
|3.5 gallon pails
||90 lbs (40.8 kg)
||25 lbs (13.3 kg)
||6 lbs (2.7 kg)
|1/2 pint can
||1.5 lbs (0.68 kg)
|12 oz. Aerosol can
||1 lb (.45 kg)