Two-part system designed to protect steel pipe.
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.
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).
For use as a joint coating, a refurbishing coating or as a pipe coating:
Scotchkote 323 Coverage per Kit Size
(assuming no waste)
Kit | Pounds | Coverage in Square Feet | ||
25 mils | 28 mils | 30 mils | ||
50 ml 400 ml Quart Gallon 5 gal x 3 |
0.15 1.19 2.1 8.4 152 |
0.85 6.78 11.9 47.7 866 |
0.76 6.05 10.6 42.6 773 |
0.71 5.65 9.9 39.7 722 |
Pipe Diameter(inches) | Total Length to Coat (cutbacks + overlaps) | |||
6" / 15 cm | 8" / 20 cm | 10" / 25 cm | 12"/ 30 cm | |
6 12 20 24 30 36 42 48 |
0.06 0.13 0.21 0.25 0.31 0.38 0.44 0.50 |
0.08 0.17 0.28 0.33 0.42 0.50 0.59 0.67 |
0.10 0.21 0.35 0.42 0.52 0.63 0.73 0.84 |
0.13 0.25 0.42 0.50 0.63 0.75 0.88 1.00 |
Properties |
Property | Value |
Color |
Blue-green |
Mix Ratio |
2A to 1B by volume, 70.8% to 29.2% by weight |
323 Viscosity @ 72°F / 22°C |
|
Shelf Life |
24 months |
Specific gravity |
1.35 mixed |
Coverage |
142 sq ft / lb / mil (0.74 m2 / kg / mm) |
Maximum Operating Temperature |
|
Minimum Coating Thickness |
25 mils / 635 microns recommended |
Typical Test Properties |
Property | Test Description | Typical Value |
Shyodu Gel Time |
200 gm mass |
75°F / 24°C: 18 min |
Dry to Touch Time |
ASTM D1640 |
41°F / 5°C: 7 hrs |
Approximate Back Fill Time |
ASTM D1640 |
41°F / 5°C: 8 hrs |
Cathodic Disbondment |
CSA Z245.20-02 |
149°F / 65°C, 3.5V, 24 hrs, 4.9 mmr |
Adhesion of Coating |
CSA Z245.20-02 |
203°F / 95°C, 24 hrs, Rating 1 |
Flexibility |
CSA Z245.20-02 |
68°F / 20°C, 0.7, °/PD |
Abrasion Resistance |
ASTM D4060-95 |
0.325 g loss |
Impact Strength |
ASTM G14 |
323 = 73.6 inch-lbs (8.3 joules) at 75°F / 24°C |
Impact Resistance |
CSA Z245 20-98 |
See chart below. |
Impact Resistance (Impact value is the last Joule where three impacts have passed) |
Panel Number |
Test Temperature |
Joule Value |
Holiday Detection Volts | Average DFT (mils) |
1 2 3 4 5 6 7 8 |
-40°F / -40°C -22°F / -30°C 14°F / -10°C 32°F / 0°C 68°F / 20°C 122°F / 50°C 149°F / 65°C 176°F / 805°C |
1.5 1.0 1.5 1.5 2.75 2.5 4.0 3.5 |
2500 2500 2500 2500 2500 2500 2500 2500 |
30.4 24.5 27.2 25.0 26.9 27.7 27.0 26.3 |
323 Brush Grade Application Instructions
Recommendations
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
Equipment Clean-Up
MEK or tolulene may be used to clean spray equipment, rollers and brushes. Utilize proper safety guidelines.