KG Gun Kote Protective Finishes
Technical Data Sheet

Gun Kote is a thin hard coating that will give excellent protection from abrasion. It is not easily worn off such as bluing, phosphate or chemically blackened surface treatments, which can leave metal surfaces, bare and unprotected from the elements. Gun Kote does not attract dirt or dust, has excellent impact resistance and can be formulated to be non-reflective. Gun Kote 2400 series is formulated with molybdenum disulfide lubricating base; and Gun Kote 1600 series is formulated with a high concentration of PTFE as a lubricating base and new for 2002 is our Boron based coatings.

COVERAGE - 400 to 450 square feet per gallon

THICKNESS Maximum = .0003 to .0004 +- .0001. If dealing with extremely tight tolerances allow for build-up of coating.

PRE TREATMENT:

Stainless Steel: Grit blast (all blasting should be done using aluminum oxide 120 mesh at 40 pounds of pressure.)
Alloy Steel: Sandblast and phosphate or sandblast only.
Aluminum: Alodine or anodize if possible, if not possible use lighter sandblast.
Nickel Or Chrome Plating: Grit blast (If plating peels it is poor plating.)

Parts are first stripped and cleaned of any oil or grease (use KG-3 Solvent Degreaser or solvent that does not leave a residue).
After sandblasting repeat cleaning to remove all residues from surface and holes that may have trapped any aluminum or blast material.

THINNING - If thinning is required use MEK or Ethel Alcohol in small amounts Gun Kote is formulated for ready to spray.

Clean UP Use MEK or Acetone.

CURING - Coating will fully cure after part reaches 325 degrees F after one hour. Coating will dry to the touch within a few minutes.

COLORS - Available in several colors including: Black, Gray, OD Green, Stainless Steel, Service Brown, Tan, Silver, Gold and Clear. (Some colors available in Flat) Premium Custom colors also available in Greens, Blues, and Reds etc. Custom colors also available.

APPLICATION - Preheat parts to be coated to about 120 degrees F. When handling parts, use a pair of clean white latex gloves to insure you do not leave any fingerprints, which will affect the bonding of the material to the metal. Using a good quality air gun or airbrush, spray in light fog passes, 8 to 10 inches away from the part you are coating. Spray from four to five different directions to assure complete coverage. The ideal coating thickness is .0004 of an inch, which should not cause any problems to close tolerance fits. After curing, while part is still warm use an oil to wipe the part down. This is especially important with flat finishes. This will minimize burnishing marks that are common with flat finishes.

Types of Spray Guns: DeVilbiss, Binks and or Badger touch up guns with medium to fine tips. The fan control should be at about ½ turn opening and material flow control at about ¾ to 1 full turn. You must experiment with the material control and fan control for best results

If coating is not to your satisfaction at this time, it can be removed with Acetone, Alcohol or MEK. To re-coat simply repeat the process.

After allowing the coating to dry, hang parts in an air-circulating oven and bake for at least 1 hour at 325 degrees F. Bake time starts when parts reach the required temperature.

Technical General Outstanding corrosion protection. 500-hour salt spray tests at 5% salt. Tests performed for Armscor by the South African Navel Logistics Dept. showed Gun Kote withstanding an equivalent of a 7-year exposure. (Tests were performed on Aluminum in a salt spray chamber with 50/50 on/off time at 35 degrees C.)
Meets or exceeds Military requirements to "Resistant to Chemicals" such as, Aviation Gasoline, Grade 115/145, Jet Fuel, JP-4, Lubrication Oil, Hydraulic Fluid, Non-petroleum, Remover Paint, Epoxy Systemlene, Nitric Acid, Hydrochloric Acid, Hydrogen Peroxide, Ammonia Hydroxide, Sodium Hydroxide NaOH, Sulfuric Acid H2SO4 3%, Sodium Bisulphide, NaHS 3% and Alkaline Cleaner, Highly Chelated (ANN-RO #101). ) @ 212 degrees F 2 hours
Outstanding heat dissipating qualities.

Outstanding temperature variation (over 500 degrees F and as low as -300 degrees F).

APPLICABLE
DOCUMENTS ASTM D-1654-61 Corrosion Protection
ASTM D-870-54 DI Water immersion
FTM 151A Accelerated salt spray (fog)
A Salt spray fog testing
REMOVAL To remove coating prior to curing use MEK or Acetone, after curing grit blast with 120-grit aluminum oxide.