• Description for 3M 3549 B/A

    Long worklife semi-rigid urethane • 2-4 hrs. handling strength • Longer worklife version of 3532

    *See Terms of Use Below

    Chemical Resistance Salt spray, Chemical Resistance: Fluid Resistance: Water
    Application Type Bond
    1 Part or 2 Part 2-Part
    Material Form Liquid
    Substrate Aluminum, FRP, PlexiGlass, Metal, Nylon, Fiber Reinforced plastic, Lexan, Rigid PVC, Cold rolled Steel, ABS, Abraded Aluminum, Lexan, Polycarbonate, Steel, Etched Aluminum, Plastic, Solvent Wiped Aluminum
    Manufacturer 3M
    Chemistry Isocyanate, Polyol, Polyurethane, Urethane
    Cure Method Base/Accelerator
    Cure Temperature (°C) 20 to 25, 24
    Cure Time (min) 10,080
    Viscosity (cPs) 30,000
    Color Brown
    High Temperature Resistance (°C) 82
    Low Temperature Resistance (°C) -40
    Density (g/cm³) 10.3 (weight (lbs/gal)), 11.2 (weight (lbs/gal))
  • Technical Data for 3M 3549 B/A

    Overview
    • Chemical Resistance
      • Chemical Resistance : Fluid Resistance : Water Resistance - Water
      • Chemical Resistance - Salt spray
    • Application Type
    • 1 Part or 2 Part
      • 2-Part
    • Material Form
      • Liquid
    • Substrate
    • Chemistry
    • Cure Method
      • 2-Part Cure - Base/Accelerator
    • Color
      • Brown
    Specifications
    Cure Specs
    Cure Temperature (°C) 20 to 25, 24
    Cure Time (min) 10,080
    Viscosity (cPs) 30,000 Test Method
    Fixture or Handling Strength Time (min) 120 to 240
    Work / Pot Time (min) 45 to 70, Long Test Method
    Mix Ratio 1:1 (by volume), 100:109 (by weight)
    Bond Strength
    Structural/Load-Bearing Structural
    Shear Strength (psi) 2,500, 2,000, 1,000, 2,000, 1,000, 2,000, 2,000, 1,000, 1,200, 700, 300, 300, 100, 100, 20, 240, 1,240, 620, 1,660, 370, 440, 330, 580, 1,840, 1,300, 1,150, 960, 810, 530, 40, 125, 70, 180, 110, 300, 110, 2, 11, 80, 460, 700, 1,170, 53, 227, 259, 508, 293, 391, 576, 684, 177, 409, 614, 683, 392, 730 Test Method
    Tensile Strength (psi) 3,000, 3,000 Test Method
    Material Resistance
    High Temperature Resistance (°C) 82
    Impact Resistance Impact resistance
    Low Temperature Resistance (°C) -40
    Moisture/Humidity Resistance Moisture/humidity resistance
    Hardness
    Elongation (%) 96
    Flexibility Semi-rigid
    Other Properties
    Density (g/cm³) 10.3 (weight (lbs/gal)), 11.2 (weight (lbs/gal))
    Business Information
    Shelf Life Details Store product at 60-80°F (16-27°C) for maximum storage life. Higher temperatures reduce normal storage life. Lower temperatures cause increased viscosity of a temporary nature. Rotate stock on a “first in-first out” basis. These products have a shelf life of one year from date of shipment when properly stored in their unopened containers.
    Shelf Life Temperature (°F) 61 to 81
    Shelf Life Type from date of shipment
    Shelf Life (mon) 12
  • Best Practices for 3M 3549 B/A

    *See Terms of Use Below

    1. Surface Preparation

      Surfaces to be bonded must be dry and free from rust, oil, grease and wax. Surfaces can be cleaned with an abrasive such as 3MTM Coated Abrasives (240 grit) followed by wiping with a solvent such as Scotch-GripTM Solvent No. 3.*

      *Note: When using solvents, extinguish all ignition sources and follow the manufacturer’s precautions and directions for use when handling such materials.

  • Comparable Materials for 3M 3549 B/A

    *See Terms of Use Below

    Spec Engine® Results

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Viscosity Test Methods
Viscosity Temperature
30,000 cPs 24°C
Work / Pot Time Test Methods
Work / Pot Time Test Method Temperature
45 to 70 min 100 grams mixed at 75°F 24°C: 40-70 min. 24°C
Long
Tensile Strength Test Methods
Tensile Strength Cure Time Cure Temperature Test Temperature Test Method
3,000 psi 60 min 121°C 25°C ASTM-D-738 at 2 inches/min.
3,000 psi 30 min 141°C 25°C ASTM-D-738 at 2 inches/min.
Shear Strength Test Methods
Shear Strength Type Substrate Test Time Test Temperature Test Method
2,500 psi Overlap shear strength Etched Aluminum -40°C All aluminum data were developed on .063-inch thick 2024 T-3 clad aluminum and all steel data on .035-inch cold rolled steel. Test specimens were 1/2-inch overlap, 1-inch wide with .005-inch thick bondlines pulled at a testing rate of .1-inch/min.
2,000 psi Overlap shear strength Abraded and Solvent Wiped Aluminum -40°C All aluminum data were developed on .063-inch thick 2024 T-3 clad aluminum and all steel data on .035-inch cold rolled steel. Test specimens were 1/2-inch overlap, 1-inch wide with .005-inch thick bondlines pulled at a testing rate of .1-inch/min.
1,000 psi Overlap shear strength Solvent Wiped Aluminum -40°C All aluminum data were developed on .063-inch thick 2024 T-3 clad aluminum and all steel data on .035-inch cold rolled steel. Test specimens were 1/2-inch overlap, 1-inch wide with .005-inch thick bondlines pulled at a testing rate of .1-inch/min.
2,000 psi Overlap shear strength Abraded and Solvent Wiped Steel -40°C All aluminum data were developed on .063-inch thick 2024 T-3 clad aluminum and all steel data on .035-inch cold rolled steel. Test specimens were 1/2-inch overlap, 1-inch wide with .005-inch thick bondlines pulled at a testing rate of .1-inch/min.
1,000 psi Overlap shear strength Solvent Wiped Steel -40°C All aluminum data were developed on .063-inch thick 2024 T-3 clad aluminum and all steel data on .035-inch cold rolled steel. Test specimens were 1/2-inch overlap, 1-inch wide with .005-inch thick bondlines pulled at a testing rate of .1-inch/min.
2,000 psi Overlap shear strength Etched Aluminum 24°C All aluminum data were developed on .063-inch thick 2024 T-3 clad aluminum and all steel data on .035-inch cold rolled steel. Test specimens were 1/2-inch overlap, 1-inch wide with .005-inch thick bondlines pulled at a testing rate of .1-inch/min.
2,000 psi Overlap shear strength Abraded and Solvent Wiped Aluminum 24°C All aluminum data were developed on .063-inch thick 2024 T-3 clad aluminum and all steel data on .035-inch cold rolled steel. Test specimens were 1/2-inch overlap, 1-inch wide with .005-inch thick bondlines pulled at a testing rate of .1-inch/min.
1,000 psi Overlap shear strength Solvent Wiped Aluminum 24°C All aluminum data were developed on .063-inch thick 2024 T-3 clad aluminum and all steel data on .035-inch cold rolled steel. Test specimens were 1/2-inch overlap, 1-inch wide with .005-inch thick bondlines pulled at a testing rate of .1-inch/min.
1,200 psi Overlap shear strength Abraded and Solvent Wiped Steel 24°C All aluminum data were developed on .063-inch thick 2024 T-3 clad aluminum and all steel data on .035-inch cold rolled steel. Test specimens were 1/2-inch overlap, 1-inch wide with .005-inch thick bondlines pulled at a testing rate of .1-inch/min.
700 psi Overlap shear strength Solvent Wiped Steel 24°C All aluminum data were developed on .063-inch thick 2024 T-3 clad aluminum and all steel data on .035-inch cold rolled steel. Test specimens were 1/2-inch overlap, 1-inch wide with .005-inch thick bondlines pulled at a testing rate of .1-inch/min.
300 psi Overlap shear strength Etched Aluminum 82°C All aluminum data were developed on .063-inch thick 2024 T-3 clad aluminum and all steel data on .035-inch cold rolled steel. Test specimens were 1/2-inch overlap, 1-inch wide with .005-inch thick bondlines pulled at a testing rate of .1-inch/min.
300 psi Overlap shear strength Abraded and Solvent Wiped Aluminum 82°C All aluminum data were developed on .063-inch thick 2024 T-3 clad aluminum and all steel data on .035-inch cold rolled steel. Test specimens were 1/2-inch overlap, 1-inch wide with .005-inch thick bondlines pulled at a testing rate of .1-inch/min.
100 psi Overlap shear strength Solvent Wiped Aluminum 82°C All aluminum data were developed on .063-inch thick 2024 T-3 clad aluminum and all steel data on .035-inch cold rolled steel. Test specimens were 1/2-inch overlap, 1-inch wide with .005-inch thick bondlines pulled at a testing rate of .1-inch/min.
100 psi Overlap shear strength Abraded and Solvent Wiped Steel 82°C All aluminum data were developed on .063-inch thick 2024 T-3 clad aluminum and all steel data on .035-inch cold rolled steel. Test specimens were 1/2-inch overlap, 1-inch wide with .005-inch thick bondlines pulled at a testing rate of .1-inch/min.
20 psi Overlap shear strength Solvent Wiped Steel 82°C All aluminum data were developed on .063-inch thick 2024 T-3 clad aluminum and all steel data on .035-inch cold rolled steel. Test specimens were 1/2-inch overlap, 1-inch wide with .005-inch thick bondlines pulled at a testing rate of .1-inch/min.
240 psi Overlap shear strength Nylon -40°C All data were developed on 1/8-inch thick, 1/2-inch overlap, 1-inch wide specimens with .005-inch thick bondlines that had been abraded and alcohol wiped prior to bonding.
1,240 psi Overlap shear strength Lexan -40°C Denotes substrate failure., All data were developed on 1/8-inch thick, 1/2-inch overlap, 1-inch wide specimens with .005-inch thick bondlines that had been abraded and alcohol wiped prior to bonding.
620 psi Overlap shear strength Plexiglass -40°C All data were developed on 1/8-inch thick, 1/2-inch overlap, 1-inch wide specimens with .005-inch thick bondlines that had been abraded and alcohol wiped prior to bonding.
1,660 psi Overlap shear strength FRP -40°C Denotes substrate failure, All data were developed on 1/8-inch thick, 1/2-inch overlap, 1-inch wide specimens with .005-inch thick bondlines that had been abraded and alcohol wiped prior to bonding.
370 psi Overlap shear strength Rigid PVC -40°C All data were developed on 1/8-inch thick, 1/2-inch overlap, 1-inch wide specimens with .005-inch thick bondlines that had been abraded and alcohol wiped prior to bonding.
440 psi Overlap shear strength ABS -40°C Denotes substrate failure, All data were developed on 1/8-inch thick, 1/2-inch overlap, 1-inch wide specimens with .005-inch thick bondlines that had been abraded and alcohol wiped prior to bonding.
330 psi Overlap shear strength Polystyrene -40°C All data were developed on 1/8-inch thick, 1/2-inch overlap, 1-inch wide specimens with .005-inch thick bondlines that had been abraded and alcohol wiped prior to bonding.
580 psi Overlap shear strength Nylon 24°C All data were developed on 1/8-inch thick, 1/2-inch overlap, 1-inch wide specimens with .005-inch thick bondlines that had been abraded and alcohol wiped prior to bonding.
1,840 psi Overlap shear strength Lexan 24°C Denotes substrate failure., All data were developed on 1/8-inch thick, 1/2-inch overlap, 1-inch wide specimens with .005-inch thick bondlines that had been abraded and alcohol wiped prior to bonding.
1,300 psi Overlap shear strength Plexiglass 24°C All data were developed on 1/8-inch thick, 1/2-inch overlap, 1-inch wide specimens with .005-inch thick bondlines that had been abraded and alcohol wiped prior to bonding.
1,150 psi Overlap shear strength FRP 24°C Denotes substrate failure., All data were developed on 1/8-inch thick, 1/2-inch overlap, 1-inch wide specimens with .005-inch thick bondlines that had been abraded and alcohol wiped prior to bonding.
960 psi Overlap shear strength Rigid PVC 24°C All data were developed on 1/8-inch thick, 1/2-inch overlap, 1-inch wide specimens with .005-inch thick bondlines that had been abraded and alcohol wiped prior to bonding.
810 psi Overlap shear strength ABS 24°C All data were developed on 1/8-inch thick, 1/2-inch overlap, 1-inch wide specimens with .005-inch thick bondlines that had been abraded and alcohol wiped prior to bonding.
530 psi Overlap shear strength Polystyrene 24°C All data were developed on 1/8-inch thick, 1/2-inch overlap, 1-inch wide specimens with .005-inch thick bondlines that had been abraded and alcohol wiped prior to bonding.
40 psi Overlap shear strength Nylon 82°C All data were developed on 1/8-inch thick, 1/2-inch overlap, 1-inch wide specimens with .005-inch thick bondlines that had been abraded and alcohol wiped prior to bonding.
125 psi Overlap shear strength Lexan 82°C All data were developed on 1/8-inch thick, 1/2-inch overlap, 1-inch wide specimens with .005-inch thick bondlines that had been abraded and alcohol wiped prior to bonding.
70 psi Overlap shear strength Plexiglass 82°C All data were developed on 1/8-inch thick, 1/2-inch overlap, 1-inch wide specimens with .005-inch thick bondlines that had been abraded and alcohol wiped prior to bonding.
180 psi Overlap shear strength FRP 82°C All data were developed on 1/8-inch thick, 1/2-inch overlap, 1-inch wide specimens with .005-inch thick bondlines that had been abraded and alcohol wiped prior to bonding.
110 psi Overlap shear strength Rigid PVC 82°C All data were developed on 1/8-inch thick, 1/2-inch overlap, 1-inch wide specimens with .005-inch thick bondlines that had been abraded and alcohol wiped prior to bonding.
300 psi Overlap shear strength ABS 82°C All data were developed on 1/8-inch thick, 1/2-inch overlap, 1-inch wide specimens with .005-inch thick bondlines that had been abraded and alcohol wiped prior to bonding.
110 psi Overlap shear strength Polystyrene 82°C All data were developed on 1/8-inch thick, 1/2-inch overlap, 1-inch wide specimens with .005-inch thick bondlines that had been abraded and alcohol wiped prior to bonding.
2 psi Overlap shear strength plastic to primed steel 14,400 sec Specimens: 1/2-inch overlap fiber reinforced plastic to primed steel, 0.32-inch bondline. Specimens were pulled at 2 inches/min.
11 psi Overlap shear strength plastic to primed steel 21,600 sec Specimens: 1/2-inch overlap fiber reinforced plastic to primed steel, 0.32-inch bondline. Specimens were pulled at 2 inches/min.
80 psi Overlap shear strength plastic to primed steel 28,800 sec Specimens: 1/2-inch overlap fiber reinforced plastic to primed steel, 0.32-inch bondline. Specimens were pulled at 2 inches/min.
460 psi Overlap shear strength plastic to primed steel 57,600 sec Specimens: 1/2-inch overlap fiber reinforced plastic to primed steel, 0.32-inch bondline. Specimens were pulled at 2 inches/min.
700 psi Overlap shear strength plastic to primed steel 86,400 sec Specimens: 1/2-inch overlap fiber reinforced plastic to primed steel, 0.32-inch bondline. Specimens were pulled at 2 inches/min.
1,170 psi Overlap shear strength plastic to primed steel 172,800 sec Specimens: 1/2-inch overlap fiber reinforced plastic to primed steel, 0.32-inch bondline. Specimens were pulled at 2 inches/min.
53 psi Overlap shear strength plastic to primed steel 1,200 sec 66°C Specimens: 1/2-inch overlap fiber reinforced plastic to primed steel, .032-inch bondline. Specimens were placed in an oven at designated temperature for the specified time. Bonds were then cooled for 1 min. and pulled at a rate of 2 inches/min.
227 psi Overlap shear strength plastic to primed steel 1,800 sec 66°C Specimens: 1/2-inch overlap fiber reinforced plastic to primed steel, .032-inch bondline. Specimens were placed in an oven at designated temperature for the specified time. Bonds were then cooled for 1 min. and pulled at a rate of 2 inches/min.
259 psi Overlap shear strength plastic to primed steel 2,400 sec 66°C Specimens: 1/2-inch overlap fiber reinforced plastic to primed steel, .032-inch bondline. Specimens were placed in an oven at designated temperature for the specified time. Bonds were then cooled for 1 min. and pulled at a rate of 2 inches/min.
508 psi Overlap shear strength plastic to primed steel 3,000 sec 66°C Specimens: 1/2-inch overlap fiber reinforced plastic to primed steel, .032-inch bondline. Specimens were placed in an oven at designated temperature for the specified time. Bonds were then cooled for 1 min. and pulled at a rate of 2 inches/min.
293 psi Overlap shear strength plastic to primed steel 1,200 sec 82°C Specimens: 1/2-inch overlap fiber reinforced plastic to primed steel, .032-inch bondline. Specimens were placed in an oven at designated temperature for the specified time. Bonds were then cooled for 1 min. and pulled at a rate of 2 inches/min.
391 psi Overlap shear strength plastic to primed steel 1,800 sec 82°C Specimens: 1/2-inch overlap fiber reinforced plastic to primed steel, .032-inch bondline. Specimens were placed in an oven at designated temperature for the specified time. Bonds were then cooled for 1 min. and pulled at a rate of 2 inches/min.
576 psi Overlap shear strength plastic to primed steel 2,400 sec 82°C Specimens: 1/2-inch overlap fiber reinforced plastic to primed steel, .032-inch bondline. Specimens were placed in an oven at designated temperature for the specified time. Bonds were then cooled for 1 min. and pulled at a rate of 2 inches/min.
684 psi Overlap shear strength plastic to primed steel 3,000 sec 82°C Specimens: 1/2-inch overlap fiber reinforced plastic to primed steel, .032-inch bondline. Specimens were placed in an oven at designated temperature for the specified time. Bonds were then cooled for 1 min. and pulled at a rate of 2 inches/min.
177 psi Overlap shear strength plastic to primed steel 600 sec 93°C Specimens: 1/2-inch overlap fiber reinforced plastic to primed steel, .032-inch bondline. Specimens were placed in an oven at designated temperature for the specified time. Bonds were then cooled for 1 min. and pulled at a rate of 2 inches/min.
409 psi Overlap shear strength plastic to primed steel 1,200 sec 93°C Specimens: 1/2-inch overlap fiber reinforced plastic to primed steel, .032-inch bondline. Specimens were placed in an oven at designated temperature for the specified time. Bonds were then cooled for 1 min. and pulled at a rate of 2 inches/min.
614 psi Overlap shear strength plastic to primed steel 1,800 sec 93°C Specimens: 1/2-inch overlap fiber reinforced plastic to primed steel, .032-inch bondline. Specimens were placed in an oven at designated temperature for the specified time. Bonds were then cooled for 1 min. and pulled at a rate of 2 inches/min.
683 psi Overlap shear strength plastic to primed steel 2,400 sec 93°C Specimens: 1/2-inch overlap fiber reinforced plastic to primed steel, .032-inch bondline. Specimens were placed in an oven at designated temperature for the specified time. Bonds were then cooled for 1 min. and pulled at a rate of 2 inches/min.
392 psi Overlap shear strength plastic to primed steel 600 sec 107°C Specimens: 1/2-inch overlap fiber reinforced plastic to primed steel, .032-inch bondline. Specimens were placed in an oven at designated temperature for the specified time. Bonds were then cooled for 1 min. and pulled at a rate of 2 inches/min.
730 psi Overlap shear strength plastic to primed steel 1,200 sec 107°C Specimens: 1/2-inch overlap fiber reinforced plastic to primed steel, .032-inch bondline. Specimens were placed in an oven at designated temperature for the specified time. Bonds were then cooled for 1 min. and pulled at a rate of 2 inches/min.