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PT-522 ZINC CHROMATE PRIMER

YELLOW/GREEN
|
SURFACE PREPARATIONS
|
PT-522
PT-522
PT-522 ZINC CHROMATE PRIMER

PT-522 ZINC CHROMATE PRIMER
Part Number: PT-522 Yellow or Green Chromate/Non-Chromate
Military Specification: TT-P-1757 TYI CLASS C & N

PT-522 Zinc Chromate Primer — TT-P-1757 TYI CLASS C & N is a general purpose, rust inhibitive, alkyd primer. It is intended for use over metals that are bare, scuffed, sanded, lightly rusted, abrasive blast and previously painted surfaces while showing excellent anti-corrosion properties. The primer chemically etches into the surface to provide exceptional adhesion and durability. Also, moisture in the air causes the zinc chromate to react with the metal surface, and it forms a passive film that prevents corrosion. Although this primer is intended for metals, it may be applied to wood, composite and concrete surfaces.  PT-522 is not resistant to all solvents, i.e. MEK and Acetone.

PRODUCT SPECIFICATIONS
PTI PART NUMBER
PT-522
PRODUCT TYPE:
SURFACE PREPARATIONS
COLOR:
YELLOW/GREEN
BMS SPECIFICATION:
None
MIL-SPEC:
TT-P-1757 TYI CLASS C & N
OTHER SPECIFICATIONS
None
UNIT SIZE
None

Extended Description

PT-522 Zinc Chromate Primer -- TT-P-1757 TYI CLASS C & N is a general purpose, rust inhibitive, alkyd primer. It is intended for use over metals that are bare, scuffed, sanded, lightly rusted, abrasive blast and previously painted surfaces while showing excellent anti-corrosion properties. The primer chemically etches into the surface to provide exceptional adhesion and durability. Also, moisture in the air causes the zinc chromate to react with the metal surface, and it forms a passive film that prevents corrosion. Although this primer is intended for metals, it may be applied to wood, composite and concrete surfaces. PT-522 is not resistant to all solvents, i.e. MEK and Acetone.

COLORS

YELLOW AND GREEN (CUSTOM COLORS DO NOT MEET THE MIL-SPEC)

COATING PROPERTIES & CHARACTERISTICS

  • Reducer Acetone, PT-1022X66, PT-1003TYIII, (conforms to MIL-T-81772B TY. III)
  • Recommended Dry Film Thickness 0.6 – 0.9 mil)
  • Spray Viscosity 14 seconds, max #4 Ford
  • Weight per Gallon 10.9 lbs.
  • Coatings VOC 244 grams per liter
  • MIL-SPEC TT-P-1757B TY. I&II

SHELF LIFE

Shelf life is only applicable for materials stored in unopened and undamaged original factory filled containers.1 year when stored between 50⁰-85⁰ Fahrenheit.

SURFACE PREPARATION INSTRUCTIONS

ALL SURFACES:

Remove all dirt, grease, oil, salt and chemical contaminants by washing the surface with PTC2002or GTS-2000 0 VOC Cleaners/Degreasers or other suitable detergent cleaner/ degreaser. Rinse thoroughly with water. It is recommended that a final rinse or wipe with solvents IPA, Acetone or MEK. Rinse/wipe thoroughly allow to fully dry. Remove all remaining dust and debris by lightly wiping the surface with a tack rag or cheese cloth if necessary. All surfaces must be dry at time of application.STEEL: Hand tool (SSPC-SP-2) or power tool (SSPC-SP-3) clean to remove all loose rust, mill scale, and deteriorated previous coatings. Abrasive blasting to a minimum Commercial Grade (SSPC-SP-6, NACE 3) with a1–2 mil (25–50µ) surface profile is recommended for optimal performance. Abrasive blast cleaned steel requires two coats of primer. Scuff the surface with scotch bright pads.

  • For additional protection we recommend applying PTI’s Acid Etch Primer (PT-402) prior to the ZincChromate Primer.

MIXING INSTRUCTIONS

Mix the paint on a shaker for 5 – 10 minutes for optimal results.Admix by volume:

  1. If it is necessary to reduce/thin the primer, start by adding 1 part by volume Acetone, PT-1022X66, or PT1003TYIIIto 8 parts primer by volume. More may be added for individual applications. Do not exceed more than 1 part primer to 1 part reducer.
  2. Mix only the amount that can be used in one day.

APPLICATION

This product can be applied using conventional air spray equipment or HVLP systems. Make sure pots, guns, and lines are purged and cleaned before each use.

  1. Mix both paint and reducer thoroughly and filter/strain before spray application.NOTE: It is not recommended to strain flat/matte coatings.
  2. HVLP Spray Pressure: 7-10psi
  3. Always air-blow and tack wipe the surfaces to be painted. Aircraft should be grounded to prevent static.
  4. Best application results: apply 2 coats: 1 fog/tack coat & 1 full coats from 0.6 – 0.9 mil thickness.
  5. Recommended Dry Film Thickness is 0.6-0.9 mils.

NOTE: Application of PTI products requires the use of all OSHA approved safety equipment, including proper ventilation. Additionally, PTI products require the recommended temperature/humidity conditions and film thickness ranges for optimal performance. For planes in hangers, the material, hangar, and aircraft skin temperatures should be no lower than 75⁰ F / 25⁰ C before, during and after application.

DRYING & CURING SCHEDULE

Dry times are based on the dry film thickness between 0.6 - 0.9 mils (15-23 microns).Air Dry:Allow applied coating to dry for at least 15 minutes before applying top coat. Primer dries dust free in 5 minutes and dries hard in 15 minutes. Times may vary depending on climate, temperature, and atmospheric conditions.Always bring the coating to the “tack free” stage before top coating.

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