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3M™ Scotchkote 323 Liquid Epoxy Coating is a two-part system designed to protect steel pipe and other metal surfaces from the harsh affects of corrosion. An ideal spray applicator is the 3M Scotchkote Spray System HSS-450.
Intended Uses
As a patch material.
As a girthweld coating.
As an internal lining
As a stand alone coating for pipe rehabilitation.
In a wide variety of other field applications where corrosion protection of metal is required.
Product Features
No solvents needed.
High build, up to 45 mils/1150 microns in one application
Applicable by cartridge, brush, roller or plural component spray.
Excellent adhesion.
100% solids.
Can be applied to a substrate as cold as 41°F / 5°C.
Meets the requirements of AWWA C210, - 97 clause 4.3.4.1.
Chemical Resistance
Scotchkote 323 is resistant to damage by acids and bases in the pH range of 2 to 14. It is also resistant to hydrocarbons such as crude oil, motor oil, gasoline and many solvents. Testing is suggested if the coating is to be used in continual contact with oxidizing agents such as sodium hypochlorite (bleach) and aggressive solvents such as methyl ethyl ketone (MEK).
General Application Steps
For use as a joint coating, a refurbishing coating or as a pipe coating:
Remove oil, grease and loosely adhering deposits.
Abrasive blast clean the surface to NACE No. 2/SSPCSP10, ISO 8501:1, Grade SA 2 1/2 near-white metal.
Ensure the abraded surface is cleaned of abrading debris with the use of an air blast or a clean lint free cloth.
Within four hours of blasting as per the above cleaning process and with the metal above 41ËšF / 5ËšC and a minimum of 37°F/3ËšC above the dew point, apply Scotchkote 323 at a minimum thickness of 635 microns or 25 mils.
Allow to cure.
Visually or electrically inspect the coating for defects.
Repair all defects using Scotchkote 323 as a repair material.
For use as a repair material in the field where scratches or other holidays may have occurred as a result of shipping damage, etc., and the bare area of steel substrate exposed exceeds approximately 20 mm diameter or about 0.6 sq. in. or 400 sq. mm:
Remove oil, grease and loosely adhering deposits.
Abrade the FBE surface with medium grit sandpaper (approximately 80 grit). Powered rotary sanders are anacceptable means to perform this task. Ensure that the surrounding FBE is roughened for 10 mm on all sides.An anchor pattern of 40 to 100 microns is preferred on the substrate.
Ensure the abraded surface is cleaned of abrading debris with the use of an air blast or a clean lint free cloth.
With the metal above 41ËšF/5ËšC and a minimum of 37°F / 3°C above the dew point, apply Scotchkote 323 at a minimum thickness of 635 microns or 25 mils.
Scotchkote 323 Coverage per Kit Size (assuming no waste)
Pour part B into part A. Scotchkote 323 has a mix ratio of 2A to 1B by volume.
Thoroughly mix combined parts into a uniform color.
Recommendations
Prepare only the quantity of coating that can be applied within the pot life: 20 min with 200 gm mass at 75°F / 24°C, 11 min with 200 gm mass at 104°F / 40°C.
A 1/4" (6 mm) nap roller is suggested.
For speed of application, and to extend the working life of the product, pour mixed product directly to the top of the substrate/pipe, then pull the mixture down around pipe in one direction with brush.
Because of the high viscosity of this product, mix parts A & B together at temperatures above 68°F (20°C).
Using a brush or roller, apply Scotchkote 323 to a minimum thickness of 25 mils (635 μm) or as specified.
Overlap the pipe coating no less than 1" (25 mm).
Allow coating to properly cure before handling.
Scotchkote 323 Patch Compound Applicator
Multiple Coats
Scotchkote 323 has been formulated to achieve a coating thickness of up to 45 mils/1150 microns in one coat. If additional thickness is required, apply the additional coats within four hours of the initial coat. This coating may be applied in any thickness consistent with producing an acceptable surface finish.
Helpful Spray Information
Suggested tip size of 625.
Tip pressure approximately 2,200 psi / 15.2 MPa.
Preheat Part A to 150°F / 66°C.
Preheat Part B to 120°F / 49°C.
Mix ratio of pumps is 2:1.
Equipment Clean-Up
MEK or tolulene may be used to clean spray equipment, rollers and brushes. Utilize proper safety guidelines.
3M™ Scotchkote 323 Liquid Epoxy Coating is a two-part system designed to protect steel pipe and other metal surfaces from the harsh affects of corrosion. An ideal spray applicator is the 3M Scotchkote Spray System HSS-450.
Intended Uses
As a patch material.
As a girthweld coating.
As an internal lining
As a stand alone coating for pipe rehabilitation.
In a wide variety of other field applications where corrosion protection of metal is required.
Product Features
No solvents needed.
High build, up to 45 mils/1150 microns in one application
Applicable by cartridge, brush, roller or plural component spray.
Excellent adhesion.
100% solids.
Can be applied to a substrate as cold as 41°F / 5°C.
Meets the requirements of AWWA C210, - 97 clause 4.3.4.1.
Chemical Resistance
Scotchkote 323 is resistant to damage by acids and bases in the pH range of 2 to 14. It is also resistant to hydrocarbons such as crude oil, motor oil, gasoline and many solvents. Testing is suggested if the coating is to be used in continual contact with oxidizing agents such as sodium hypochlorite (bleach) and aggressive solvents such as methyl ethyl ketone (MEK).
General Application Steps
For use as a joint coating, a refurbishing coating or as a pipe coating:
Remove oil, grease and loosely adhering deposits.
Abrasive blast clean the surface to NACE No. 2/SSPCSP10, ISO 8501:1, Grade SA 2 1/2 near-white metal.
Ensure the abraded surface is cleaned of abrading debris with the use of an air blast or a clean lint free cloth.
Within four hours of blasting as per the above cleaning process and with the metal above 41ËšF / 5ËšC and a minimum of 37°F/3ËšC above the dew point, apply Scotchkote 323 at a minimum thickness of 635 microns or 25 mils.
Allow to cure.
Visually or electrically inspect the coating for defects.
Repair all defects using Scotchkote 323 as a repair material.
For use as a repair material in the field where scratches or other holidays may have occurred as a result of shipping damage, etc., and the bare area of steel substrate exposed exceeds approximately 20 mm diameter or about 0.6 sq. in. or 400 sq. mm:
Remove oil, grease and loosely adhering deposits.
Abrade the FBE surface with medium grit sandpaper (approximately 80 grit). Powered rotary sanders are anacceptable means to perform this task. Ensure that the surrounding FBE is roughened for 10 mm on all sides.An anchor pattern of 40 to 100 microns is preferred on the substrate.
Ensure the abraded surface is cleaned of abrading debris with the use of an air blast or a clean lint free cloth.
With the metal above 41ËšF/5ËšC and a minimum of 37°F / 3°C above the dew point, apply Scotchkote 323 at a minimum thickness of 635 microns or 25 mils.
Scotchkote 323 Coverage per Kit Size (assuming no waste)
Pour part B into part A. Scotchkote 323 has a mix ratio of 2A to 1B by volume.
Thoroughly mix combined parts into a uniform color.
Recommendations
Prepare only the quantity of coating that can be applied within the pot life: 20 min with 200 gm mass at 75°F / 24°C, 11 min with 200 gm mass at 104°F / 40°C.
A 1/4" (6 mm) nap roller is suggested.
For speed of application, and to extend the working life of the product, pour mixed product directly to the top of the substrate/pipe, then pull the mixture down around pipe in one direction with brush.
Because of the high viscosity of this product, mix parts A & B together at temperatures above 68°F (20°C).
Using a brush or roller, apply Scotchkote 323 to a minimum thickness of 25 mils (635 μm) or as specified.
Overlap the pipe coating no less than 1" (25 mm).
Allow coating to properly cure before handling.
Scotchkote 323 Patch Compound Applicator
Multiple Coats
Scotchkote 323 has been formulated to achieve a coating thickness of up to 45 mils/1150 microns in one coat. If additional thickness is required, apply the additional coats within four hours of the initial coat. This coating may be applied in any thickness consistent with producing an acceptable surface finish.
Helpful Spray Information
Suggested tip size of 625.
Tip pressure approximately 2,200 psi / 15.2 MPa.
Preheat Part A to 150°F / 66°C.
Preheat Part B to 120°F / 49°C.
Mix ratio of pumps is 2:1.
Equipment Clean-Up
MEK or tolulene may be used to clean spray equipment, rollers and brushes. Utilize proper safety guidelines.
