KAL-GARD COATING

S.C.K RANGE OF COATINGS

Formulated to meet or exceed appropriate MIL specifications, the Kal-Gard SCK range of ultra-thin film coatings offers a unique treatment for firearms and other applications where there is a requirement for outstanding corrosion resistance, combined with self-lubrication, high temperature thermal shock capability, and whose working tolerances are very close.

Because Kal-Gard SCK coatings can be successfully applied as thin as 8 to 10 microns, they can be used to impart such properties to moving parts of a mechanism without having to allow extra clearance normally required when functional coatings are used.

What is Gun-Kote SCK?

Gun-Kote SCK is a coating which was developed in America and perfected in South Africa for local conditions, for use on military weapons used in extremely adverse conditions. The coating is made up of abrasion resistant, corrosion inhibiting and lubricating solids dispersed in a resin binder using a solvent carrier and is available in the following colours:-

SCK 1                                                  Nutria Brown

SCK 2                                                   Green

SCK 6                                                   Black

Ability to meet automatic weapons dry firing requirements after 60 days sea water immersion.

Kal-Gard Gun-Kote SCK will give you:

• Corrosion resistance (1000 hrs at 5% salt spray)
• Extremely good wear and abrasion resistance.
• The coating is non reflective.

• Specular reflection at 60 degree units = 1
• Specular reflection at 85 degree units = 1

• Excellent impact resistance. Minimum .375-inch deformation before loss of adhesion evidenced by crack and peeling of coating on upset area of panel when struck at .250-inch radius round impact rod.
• Dielectric Strength. Minimum insulation with 50 VAP applied 1,100 MEG OHMS Insulation breakdown at 500 VAC min applied.
• The coating is resistant to most acids and alkaline.
• Coating thickness is extremely thin 8-12 microns which allows coating of close tolerance components.
• Can withstand temperature of up to 650°C.
• Has excellent emissivity (ability to conduct away).
• Can be applied to all ferrous and non-ferrous surfaces.
• Stop galvanic couples.

• Gun-Koted weapons can be fired dry: in contact situation proper lubrication of weapons is not always possible. Secondly dirt and grit attracted by oil is a major cause of weapon stoppages. Gun-Kote SCK prevents these problems.
• Gun-Kote SCK is a complete barrier to all forms of corrosion and can be applied to every part of the weapon – constant maintenance of weapons in the field to prevent corrosion by cleaning and oiling is extremely costly in man-hours and materials. The chemical blackening now used is at the outset. A form of rust and the alternative phosphating which is also currently used offers very minimal corrosion protection. Acid corrosion caused by detonation debris deposits are also a major problem. Corrosion caused by storage in damp, humid is a serious problem which is currently overcome by expensive oiling, greasing and packaging material. Gun-Kote SCK alleviates these problems.
• Gun-Kote is extremely hard and abrasion resistant – the existing phosphate painted, chemically blackened or browned surface treatments quickly wear and burn off leaving a bare shiny surface which is reflective, thus very, very dangerous and corrodes fast.
• Gun-Kote SCK is impervious to acids and cleaning agents – strong barrel and weapon cleaning agents currently used do not harm the coating.
• Gun-Kote SCK is extremely thin and does not interfere with close tolerance parts – this allows each individual component of the weapon to be coated giving complete protection and lubrication.
• Gun-Kote SCK can withstand extremely high temperatures e.g. 650°C and has a high rate of emissivity – Gun-Kote SCK does not peel off at high temperatures and conducts heat away from operating surfaces allowing weapons to operate at low temperatures at peak firing rates.
• Gun-Kote SCK can be applied to ferrous and non-ferrous metals. This allows a uniform finish, ease of maintenance and complete protection. This is not possible with existing finishes e.g.: protection of aluminium.
• Gun-Kote SCK is available in camouflage colours – the uses of these colours at manufacturing level preclude the costly operation of re-painting the weapons after supply.