ARC-855E Abrasion Resistant Coating Instructions
- June 12, 2024
- ARC
Table of Contents
Application Instructions: ARC 855(E)
Instructions
Surface Preparation
Proper surface preparation is critical to the long-term performance of this
product. The exact requirements vary with the severity of the application,
expected service life, and initial substrate conditions.
Optimum preparation will provide a surface thoroughly cleaned of all
contaminants and roughened to an angular profile between 75-125 μm (3-5 mil).
This is normally achieved by initial cleaning, abrasive blasting to a
cleanliness of White Metal (Sa 3/SP5) or Near-White Metal (Sa 2.5/SP10)
followed by removal of abrasive blast residues.
Mixing
To facilitate mixing and application, material temperatures should be
between 21°-32°C (70°-90°F). Each kit is packaged to the proper mix ratio. If
further proportioning is required the kit should be divided according to the
correct mix ratio.
| Mix Ratio | By Weight |
|---|---|
| A: B | 6.8 : 1 |
Pour the entire contents of Part B into Part A and mix at low speed with a variable speed drill or the supplied mixing tool for three to five minutes. Thoroughly scrape the sides and bottom of the container to completely mix both components.
Working Time – Minutes
| 10°C| 16°C| 25°C| 32°C| This chart defines the practical working time of
ARC 855(E), starting from when mixing begins.
---|---|---|---|---|---
| 50°F| 60°F| 77°F| 90°F
0.75 liter| 80 min.| 70 min.| 40 min.| 25 min.
1.5 liter| 80 min.| 70 min.| 40 min.| 25 min.
5 liter| 70 min.| 65 min.| 32 min.| 20 min.
16 liter| 65 min.| 55 min.| 25 min.| 10 min.
Application
ARC 855(E) is applied at a minimum thickness of 250 μm (10 mil). Typical
application thicknesses range from 375-500 μm (15-20 mil) per coat. When used
alone, ARC 855(E) should always be applied in a minimum of two coats. Minimum
application temperature is 10°C (50°F). Apply ARC 855(E) by brush or roller,
wetting out the surface first, and then building to 1st coat film thickness.
Multiple coat applications of ARC 855(E) may be accomplished without
additional surface preparation, as long as the film is free of contamination
and has not cured beyond the stage “Overcoat End” in the Curing Schedule chart
below. If this period is exceeded, light abrasive blasting or sanding is
required, followed by removal of any abrasive and dust residues.
If required, ARC 855(E) can be machined using a carbide tool prior to reaching
“Light Load,” as described below. Otherwise use a diamond cutting tool or
grinding tool. Prior to its light load cure state, ARC 855(E) may be
overcoated with any of the ARC epoxy materials with the exception of ARC vinyl
ester based coatings.
Coverage
| Thickness | Unit size | Coverage |
|---|---|---|
| 750 μm (30 mil) | 0.75 liters | 0.98 m² (10.60 ft²) |
| 1.5 liters | 2.00 m² (21.53 ft²) | |
| 5 liters | 6.67 m² (71.76 ft²) | |
| 16 liters | 21.33 m² (229.63 ft²) |
Curing Schedule
| 10°C| 16°C| 25°C| 32°C
---|---|---|---|---
| 50°F| 60°F| 77°F| 90°F
Tack Free| 16 hrs.| 8 hrs.| 4 hrs.| 2 hrs.
Light Load| 36 hrs.| 24 hrs.| 12 hrs.| 6 hrs.
Overcoat End| 42 hrs.| 32 hrs.| 20 hrs.| 10 hrs.
Full Load| 96 hrs.| 48 hrs.| 24 hrs.| 12 hrs.
Full Chemical| 128 hrs.| 96 hrs.| 48 hrs.| 24 hrs.
Full chemical properties can be achieved rapidly by force curing. To force
cure, first allow the material to become tack free, and then heat to 70°C
(158°F) for 4 hours.
Clean Up
Use commercial solvents (Acetone, Xylene, Alcohol, Methyl Ethyl Ketone) to
clean tools immediately after use. Once cured, the material would have to be
abraded off.
Safety
Before using any products, review the appropriate Safety Data Sheet (SDS) or Safety Sheet for your area. Follow standard confined space entry and work procedures, if appropriate.
Chesterton International GmbH
Am Lenzenfleck 23, DE-85737 Ismaning, Germany
Tel +49-5223-96276-0
www.arc-epc.com
[email protected]
© 2022 A.W. Chesterton Company
® Registered trademark owned and licensed by A.W. Chesterton Company in USA
and other countries, unless otherwise noted. www.arc-epc.com
Application condition may influence the outcome of the coating.
For specific guidance concerning local condition for surface preparation,
please contact ARC Application Engineering at
781-438-7000.
EN-085009EU
03/2022