AST ACME, Inc. - Item # MIL-24441, MIL-24441 Type III Epoxy Polyamide

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Item # MIL-24441 MIL-24441 Type III Epoxy Polyamide


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Mil-24441, Type III is a VOC compliant epoxy polyamide system, formulated for immersion service and to protect surfaces from environmental attack. For use where air pollution regulations for marine coatings are restricted to a maximum of 340 g/L or 2.8 lb/gal.

MIL-24441-Type-III-Epoxy-Polyamide

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MIL-24441-Type-III-Epoxy-Polyamide

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Application Equipment · Brush · Roller · Application Condition · Ordering Information · Specifications · Product Characteristics · Drying Schedule 5.0 mils wet @ 50% RH · Recommended Uses · Performance Characteristics · Recommended Systems · Surface Preparation · Application Procedures · Disclaimer · Clean-Up · Performance Tips · Warranty

Application Equipment

Airless Spray (See next instructions for Formula 159)

 

Minimum Pump

30:1

Hose ID

3/8 in

Tip

0.015 in

Filter

30 mesh

Reduction

As needed up to 5% by volume

Airless Spray (Formula 159 only)

 

Pressure

2000 - 3000 psi

Hose ID

3/8 in

Tip

0.019 in

Filter

None

Conventional Spray (See next instructions for Formula 159)

 

Gun

DeVilbiss MBC

Air Cap

64 º

Needle

D

Atomization Pressure

70 psi

Fluid Pressure

30 psi

Conventional Spray (Formula 159 only)

 

Gun

Binks 95

Fluid Nozzle

68

Air Nozzle

68P

Atomization Pressure

50 psi

Fluid Pressure

20 psi

Brush

Brush

Natural Bristle

Roller

Cover

3/8" woven with phenolic core

Application Condition

Air and Surface Temperature

35°F (Minimum)
100°F (Maximum)

Min. Material Temperature

60 ºF

Max. Relative Humidity

85 %

Ordering Information

Packaging

1 and 5 gallon containers (Formula 159 : 5 Gallon Container only)

Weight

10.3 - 11.5 ± 0.2 lb/gal

Specifications

Tinting

Do not tint.

Safety Precautions

Published technical data and instructions are subject to change without notice.

Product Characteristics
    Finish : Low sheen

    Colors :
      Primer : Formula 150 Green
      Finish :
      Formula 151 Haze Gray, 152 White
      Formula 153 Dark Gray, 154 Dark Gray
      Formula 155 Dark Gray, 156 Matte Red

    Volume Solids
      Primer :
      Formula 150 Green : 59.2 ± 1%
      Finish :
      Formula 151 Haze Gray : 58.6 ± 1%
      Formula 152 White : 58.1 ± 1%
      Formula 153 Dark Gray Ro 1.8 : 58.5 ± 1%
      Formula 154 Dark Gray Ro 3.6 : 58.4 ± 1%
      Formula 155 Dark Gray Ro 6 : 58.4 ± 1%
      Formula 156 Matte Red : 61.0 ± 1%


    VOC (EPA Method 24) : <340 g/l;2.8 lb/gal, maximum, mixed

    Mix Ratio : 1:1 by Volume

    Recommended Spreading Rate per Coat :
      Wet mils Primer : 5.0 -6.0
      Dry mils Primer : 3.0 - 4.0
      Coverage Primer : 320 - 450 sq ft/gal approximate
      Wet mils Topocoat : 3.5 - 5.0
      Dry mils Topocoat : 2.0 - 3.0
      Coverage Topocoat : 240 - 320 sq ft/gal approximate
      Note : Brush or roll application may require multiple coats to achieve maximum film thickness and uniformity of appearance


    Pot Life : 5 hours at 77°F, 50% RH

    Sweat-in-Time
      35 - 60°F : 2 hours
      61 - 70°F : 1 - 1 1/2
      71 - 90°F : 30 minutes - 1 hour
      90°F : none


    Shelf Life : 36 months, unopened Store indoors at 40°F to 100°F.

    Flash Point : 99°F minimum, SETA Flash, mixed

    Reducer/Clean Up : Reducer #130, R7K130

Drying Schedule 5.0 mils wet @ 50% RH
Temperature
Dry to Touch
Minimum Recoat Epoxy
Minimum Recoat Non-Epoxy
Maximum Recoat
Cure to Service
35 - 40°F
12 hours
24 hours
12 hours
14 Days
6 Days
41 - 60°F
8 hours
18 hours
8 hours
12 Days
5 Days
61 - 80°F
6 hours
12 hours
6 hours
10 Days
4 Days
81 - 100°F
4 hours
8 hours
4 hours
7 Days
64 hours

A non-epoxy topcoat must be applied before the previous epoxy topcoat has hardened and while the epoxy is in a slightly tacky condition. This overcoat period is mainly dependent on the existing environmental conditions. If the epoxy is not tacky an additional coat of epoxy must be applied to provide the required tacky condition.

Recommended Uses
    For use over prepared substrates such as steel and aluminum in industrial and marine environments where a hard, durable, chemical resistant coating is desired.
  • Marine vessels : bilges, tanks, underwater hulls, and potable water storage tanks
  • Off shore platforms
    For use where air pollution regulations for marine coatings are restricted to a maximum of 340 g/L or 2.8 lb/gal.

Performance Characteristics
    Complies with Military Specification MIL-DTL-24441C, Type III & is listed on NAVSEA QPL-24441
     
    Color Product/Rex No.
       
    Primer  
    Green - 150 Part A N10G350
    Hardener for Primer 150 Part B N10V350
    Finishes  
    Haze Gray 151 Part A N10A351
    White - 152 Part A N10W352
    Dark Gray - Ro 1.8 153 Part A N10A353
    Dark Gray - Ro 3.6 154 Part A N10A354
    Dark Gray Ro 6 155 Part A N10A355
    Hardener for 151-155 Part B N10V351
    Red - 156 Part A N10R356
    Hardener for 156 Part B N10V356




Recommended Systems
    Steel :
    1 ct. MIL-24441, Type III Primer @ 3.0 - 4.0 mils dft
    2 cts. MIL-24441, Type III Epoxy @ 2.0 - 3.0 mils dft/ct

    Steel, non-immersion :
    1 ct. MIL-24441, Type III Epoxy @ 3.0 - 4.0 mils dft
    2 cts. MIL-PRF-24635C @ 1.5 - 2.0 mils dft/ct

    Steel, potable water:
    1 ct. MIL-24441, Type III Primer (Formula 150 only) @ 2.0 - 4.0 mils dft
    1 ct. MIL-24441, Type III (No. 156) @ 2.0 - 4.0 mils dft
    1 ct. MIL-24441, Type III (No. 152) @ 2.0 - 4.0 mils dft
    Total System to be 8.0 mils minimum, 12.0 mils maximum.

    Aluminum :
    1 ct. MIL-24441, Type III Primer (Formula 150 Only) @ 3.0 - 4.0 mils dft
    2 cts. MIL-24441, Type III Epoxy @ 2.0 - 3.0 mils dft/ct

Surface Preparation
    Surface must be clean, dry, and in sound condition. Remove all oil, dust, grease, dirt, loose rust, and other foreign material to ensure adequate adhesion.

    Iron & Steel (immersion service)
    Remove all oil and grease from surface by Solvent Cleaning per SSPC-SP1. Minimum surface preparation is Near White Metal Blast Cleaning per SSPC-SP10/NACE2. Blast clean all surfaces using a sharp, angular abrasive for optimum surface profile (1-3 mils). Remove all weld spatter and round all sharp edges by grinding to a minimum 1/4" radius. Prime any bare steel the same day as it is cleaned or before flash rusting occurs.

    Iron & Steel (atmospheric service)
    Remove all oil and grease from surface by Solvent Cleaning per SSPC-SP1. Minimum surface preparation is Commercial Blast Cleaning per SSPC-SP6/NACE2. For better performance, use Near White Metal Blast Cleaning per SSPC-SP10/NACE2. Blast clean all surfaces using a sharp, angular abrasive for optimum surface profile (2 mils). Remove all weld spatter and round all sharp edges by grinding to a minimum 1/4" radius. Prime any bare steel the same day as it is cleaned or before flash rusting occurs.

    Aluminum
    Remove all oil, grease, dirt, oxide and other foreign material by Solvent Cleaning per SSPC-SP1. Minimum surface preparation is Brush Off Blast Cleaning per SSPC-SP7.

    Min. Recommended Surface Preparation
    Iron & Steel
    Atmospheric : SSPC-SP6/NACE3, 2.0 mil profile
    Immersion : SSPC-SP10/NACE2, 1.0-3.0 mil profile
    Aluminum : SSPC-SP7 or Power Wire Brush.

Application Procedures
    Surface preparation must be completed as indicated.

    Mix contents of each component thoroughly with power agitation. Make certain no pigment remains on the bottom of the can. Then combine one part by volume of Part A with one part by volume of Part B. Thoroughly agitate the mixture with power agitation. Allow the material to sweat-in as indicated below prior to application. Re-stir before using.
    If reducer solvent is used, add only after both components have been thoroughly mixed, after sweat-in.

    Recommended Spreading Rate per coal
    Wet mils Primer : 5.0 -6.0
    Dry mils Primer : 3.0 - 4.0
    Coverage Primer : 240 - 320 sq ft/gal approximate
    Wet mils Topocoat : 3.5 - 5.0
    Dry mils Topocoat : 2.0 - 3.0
    Coverage Topocoat : 320 - 450 sq ft/gal approximate

    Note : Brush or roll application may require multiple coats to achieve maximum film thickness and uniformity of appearance.

    Pot Life : 5 hours at 77°F, 50%RH

    Sweat-in Time :
    35 - 60°F : 2 hours
    61 - 70°F : 1 - 1 1/2 hours
    71 - 90°F : 30 minutes - 1 hour
    90°F : none

    Application of coating above maximum or below minimum recommended spreading rate may adversely affect coating performance.

Disclaimer
    The information and recommendations set forth in this Product Data Sheet are based upon tests conducted by or on behalf of The Sherwin-Williams Company. Such information and recommendations set forth herein are subject lo change and pertain to the product offered at the time of publication.

Clean-Up
    Clean spills and spatters immediately with Reducer #130, R7K130 Clean tools immediately after use with Reducer #130, R7K130 Follow manufacturer's safety recommendations when using any solvent.

Performance Tips
    Stripe coat all crevices, welds, and sharp angles to prevent early failure in these areas.

    When using spray application, use a 50% overlap with each pass of the gun to avoid holidays, bare areas, and pinholes. If necessary, cross spray at a right angle.

    Spreading rates are calculated on volume solids and do not include an application loss factor due to surface profile, roughness or porosity of the surface, skill and technique of the applicator, method of application, various surface irregularities, material lost during mixing, spillage, over thinning, climatic conditions, and excessive film build.

    Excessive reduction of material can affect film build, appearance, and adhesion.

    Do not apply the material beyond recommended pot life.

    Do not mix previously catalyzed material with new.

    In order to avoid blockage of spray equipment, clean equipment before use or before periods of extended downtime with Reducer #130, R7K130.

    For low temperature, atmospheric application, material should be at least 60°F.

Warranty
    The Sherwin-Williams Company warrants our products to be free of manufacturing defects in accord with applicable Sherwin-Williams quality control procedures. Liability for products proven defective, if any, Is limited to replacement of the defective product or the refund of the purchase price paid for the defective product as determined by Sherwin-Williams. No other warranty or guarantee of any kind is made by Sherwin-Williams. Expressed or implied, statutory, by operation of law or otherwise, including merchantability and fitness for a particular purpose.

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