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Mascoat® 450EN

1 of 8 products in this brand
Mascoat® 450EN is to be used under insulating coatings or conventional insulation in highly corrosive environments. It is designed to provide CUI protection per NACE SP0198. When used under insulation, 450EN offers outstanding resistance to wet & dry cycling at high temperatures up to 450°F. The coating can be used on steel for offshore platforms, barges, refineries, petrochemical plants, power plants, pulp & paper mills, and many other areas as recommended. The coating can also be used to line steel tanks at a higher film thickness.

Product Type: Primer, Solventless & High Solids Coating

Compatible Substrates & Surfaces: Metal, Steel

Features: Corrosion Resistant, Ease of Handling, High Temperature Resistance, Low VOC, Thermal Shock Resistant, Water Resistant

Application Method: Brush, Roller, Spray

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Identification & Functionality

Finish
Semi-gloss

Features & Benefits

Features
  • Excellent corrosion protection
  • Ambient temperature cure
  • Easy to apply
  • Excellent thermal shock resistance
  • Excellent build on edges
  • Single coat capability
  • High build formulation
  • VOC compliant

Applications & Uses

Application Method
Compatible Substrates & Surfaces
Limitations
  • Continuous temperature - 425˚F
  • Non-continuous temperature - 450˚F
  • Discoloration may occur above 250˚F
Substrates & Surface Protection

Remove oil and grease from the surface with solvent or a commercial cleaner, which does not leave a residue according to SSPC-SP1.

Steel

  • Non-Immersion Service: Abrasive blast to a White Metal cleanliness according to SSPC-SP6 to achieve 1.5 - 3 mil anchor profile.
  • Immersion Service: Abrasive blast to a White Metal cleanliness according to SSPC-SP5 to achieve 1.5 - 3 mil anchor profile.
Application Equipment

Listed below are the general equipment guidelines for the application of this product.

  • Conventional Sprayer - Industrial sprayers such as DeVilbiss MBC or JGA and Binks 18 or 62 having double regulated pressure pot, 3/8’ I.D. minimum material hose and a .070” I.D. fluid tip and air cap are recommended.
  • Airless Sprayer - Sprayer such as Graco’s Extreme with a 60:1 ratio and a 0.017” - 0.021” tip is recommended. A 30 mesh inline filter is recommended
  • Power Mixer - Use only explosion proof power mixers
  • Brush or Roll - Use a medium brush and short nap roller with solvent resistant fibers and core. For small areas and touch-up only.
Application Conditions
  Material Surface Ambient
Minimum 50˚F 50˚F 50˚F
Maximum 90˚F 110˚F 110˚F

Special reducing and application procedures are required outside these temperatures. Surface temperatures should be 5˚F above dew point to prevent condensation.

Mixing & Reducing
  • Mixing - Power mix each component, then blend Part B into the Part A and mix until uniform at the following ratio:
  2 Gal. Kit 10 Gal. Kit
M-250P Part A 1 gallon 5 gallon
M-250P Part B 1 gallon 5 gallon
  • Reducing - Reducing is not required for most applications; however M-250P may be reduced up to 1 pint/gal. Reducer 1 - 250 is recommended for applications temperatures below 70°F and Reducer 2 - 250 is recommended above 70°F. Reducer 2-250 is recommended for overcoating inorganic zinc primers as well as for brush and roller applications of M-250P.
  • Pot life - Four hours at 75°F. Less at higher temperatures.
Clean Up

Cleanup with Reducer 3-400 or acetone.

Dry & Cure Times

The following minimum times are based on a 10 mil DFT and adequate air ventilation. Higher thickness and reduced air circulation increase drying times.

Surface Temperature To Touch To Handle Final Cure
60˚F 16 hours 72 hours 14 days
75˚F 8 hours 36 hours 7 days
90˚F 4 hours 18 hours 4 days

Elevated temperature final cure will increase the resistance of M-450EN. Product can be topcoated at “To Handle” time frame.

Maximum Recoat
Surface Temperature Days
60˚F 14
70˚F 7
80˚F 4
90˚F 1

If the maximum recoat time is exceeded, the coating should be sweep blasted with fine aggregate to roughen surface.

Properties

Physical Properties
ValueUnitsTest Method / Conditions
Impact Resistance (Direct)80.0in.lbsASTM D-2794
Adhesion3913.0psiASTM D-4541
Abrasion Resistance (1 kg load/1000 cycles, Weight Loss CS 17 wheel)60.0mgASTM D-4060
Molten Sulfur Cyclic TestPassNACE SP0302
Component A
ValueUnitsTest Method / Conditions
Flash Point0.0°F
Typical Properties
ValueUnitsTest Method / Conditions
Volume Solids Content (Mixed)79 - 81%
Wet Film Thickness200 - 300µ/Coat
Dry Film Thickness150 - 250µ/Coat
Theoretical Dry Coat Coverage (5 mils)1283.0ft²/gal
VOC Content (Unthinned)448.0g/l
VOC Content (Reducer 3-400)448.0g/l
VOC Content (Reducer 4-400)263.0g/l
Flash Point (Reducer 3-400)100.0°F
Flash Point (Reducer 3-400)0.0°F
Component B
ValueUnitsTest Method / Conditions
Flash Pointmin. 200°F
Resistance
Exposure Immersion Splash/Spillage Fumes
Acidic Not recommended Good Good
Alkaline Not recommended Excellent Excellent
Solvents Not recommended Good Excellent
Salt water Excellent Excellent Excellent
Water Excellent Excellent Excellent
Resistance
Exposure Immersion Splash/Spillage Fumes
Acidic Excellent Excellent Excellent
Alkaline Excellent Excellent Excellent
Solvents Good Excellent Excellent
Salt water Excellent Excellent Excellent
Water Excellent Excellent Excellent

Safety & Health

Safety

For minimum protection, Mascoat recommends an N95 particulate respirator mask. For additional protection, a half mask respirator with organic vapor cartridge can be utilized. Eye protection recommended due to spray application method.

Packaging & Availability

Packaging

Packaging Unit

  1 Gal. Kit 5 Gal. Kit
Part A 0.89 gallon 4.45 gallon
Part B 0.11 gallon 0.55 gallon

Shipping Weight

  1 Gal. Kit 5 Gal. Kit
Reducer 3-400 12 gallon 60 gallon
Reducer 4-400 9 gallon 45 gallon
Package Unit 12lbs 60lbs

Storage & Handling

Shelf Life

2 years for both Parts A & B when stored inside at 40˚F - 110˚F.