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ARCOR 8509
Updated May 2020



DESCRIPTION AND RECOMMENDED USES: ARCOR® 8509 is an Epoxy Rebuild and is comparable to our 8507 in resin design with comparable loading & mesh size of Ceramic Beads. A modification in curing agents provides for rapid set and cure, and return to service is as little as 1 hour. This self-wetting formulation can be applied without a primer, can be applied at +3/4″ (750 mils, 18.75mm) on verticals and overheads and can be levelled to a smooth finish requiring no topcoat dramatically minimising application & turn-around time. ARCOR 8509 is a very convenient 2:1 Mix Ratio, by Weight & Volume, ideal for easy breakdown in-field. Similar to our EE-99KC in application, look and feel, but with lower temperatures limits and chemical resistances.



TEMPERATURE: General Immersion service (chemistry dependant);

Max. 140ºF (60C) (Spike to 200F, 3hrs (149C); Dry to 325ºF (165C) (Spike to 450F)

ABRASION:  Excellent


FLEXURAL STRENGTH: 14,000 psi (ASTM D790/7 days)

COMPRESSIVE STRENGTH: 17,480 psi (ASTM D695/7 days)

TENSILE SHEAR: 2,360 psi (ASTM D1002/steel:steel)

APPLICATIONS: Fast Repair and Back-to-Service for Ore & Coal Handling Equipment, Chutes, Pumps, Impellers, Propellers, Valves, Hydro-Wheels, Pipe Elbows. Any high wear immersion or non-immersion application.



POT LIFE: 5 Min/KG @ 75ºF

MIX RATIO: 2:1 by volume (Base:Activator) 100 gm : 50 gm by weight


SHELF LIFE:  5 years at 55-95ºF, 13-35ºC

COVERAGE: Varies with thickness applied

WEIGHT PER GALLON: 15.2 lbs(6.9 KG)


REVISED 11/2017


SURFACE PREPARATION: Metal surfaces are to be cleaned and degreased then abrasive blasted with chloride free abrasive. Exterior applications to SSPC SP-6 Commercial Finish minimum 4 mil profile. Immersion applications to SSPC SP-10 Near White metal, 4 to 6 mil profile. Grind flat all burrs, weld seams, radius sharp edges. Fresh blasted surfaces to be rebuilt as quickly as possible to prevent oxidation of the surface and allow time for proper rebuilding of the damaged area. Ca be used to rebuild damaged concrete. Concrete should be degreased, neutralised, and dry.

MIXING: Thoroughly mix Activator into Base with mixing stick scraping sides and bottom of container or mixing board. Mix by volume 2 parts Base to 1 part Activator. Or by weight 2 parts Base to 1 part Activator (100:50). Mix thoroughly to produce and even coloured , streak-free material.

THINNING: Never Thin

APPLICATION: Use heavy plastic squeegee or putty knife. Work material into profile of substrate to achieve maximum adhesive and to remove any entrapped air. Contour to correct form with putty knife or plastic applicator. If mold or form is used be sure to coat its surface with a release agent to prevent adhesion of the material. Machining is possible using diamond tipped tools only. Grinding is possible only if done within 2 hours of application at 77ºF (add 1 hour for each 10ºF below 77ºF, subtract 1/2 hour for each 10ºF above 77ºF).

APPLICATION TEMPERATURE: Material: keep between 55 and 95ºF (17-35ºC). Substrate: keep between 45-105ºF (7-40ºC). The difference in temperature of the substrate and the material should never exceed 10ºF, 5ºC. Substrate shall be a minimum of 5ºF (3ºC) above dew point. Do not apply if relative humidity exceeds 90%. If necessary heat the metal prior to surface preparation using electric heater or heat lamp. Never use gas, oil or kerosene heaters as they will leave a greasy residue on metal surface. For best results keep all material in warm area overnight (75ºF+) for ease of mixing. If necessary Base component of material can be heated by microwave for 30 seconds for a 1 KG Base unit or by warm water bath. Heat Activator by warm water bath only. If necessary let material cool before application.

OVERCOAT/CURE TIME: Re-coat as soon as possible while material is still soft, within 20 minutes to 2 hours at 77ºF. 25ºC. Max overcoat is 4 hours at 77F(25C). If overcoat window is exceeded abrade surface with course sandpaper, grinder or brush blast. Full cure before immersion 4 hours at 77ºF. If needed, Force Cure with heat 1 hours at 100ºF, 38ºC.

CLEAN UP: Clean tools immediately after use with Acetone or MethylEthylKetone (M.E.K.). Use 98%+ Isopropyl Alcohol in solvent controlled environments.

WARNING: Base contains epoxy resin. Activator contains alkaline amines, a strong sensitizer. May cause skin irritation, sensitization or other allergic responses. Use with good ventilation, particularly if heated or sprayed. Prevent all contact with skin or eyes. Wear protective clothing, goggles, gloves or barrier creams. Keep containers closed when not in use. Wash thoroughly after handling. In case of skin contact immediately wash with soap and water. In case of eye contact, flush with water for 15 minutes. If irritation persists seek medical attention.

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Manufacturer makes no warranty either expressed or implied including warranties of merchantability or fitness for a particular purpose for this product. Under no circumstances will the manufacturer be liable for incidental, consequential or other damages, breach of warranty, strict liability, or any other theory arising out of use of this product.