3M 1751 B/A

3M 1751 B/A Datasheet
  • Description for 3M 1751 B/A

    A gray, aluminum filled, two-part, room temperature curing structural adhesive. • Excellent void filler and machinable for many "Body Solder" applications

    *See Terms of Use Below

    Application Type Bond, Repairing
    1 Part or 2 Part 2 Part
    Material Form Liquid
    Substrate Aluminum, Copper, Glass, Metal, Plastic, Polyester, Rubber, Steel, Maple
    Manufacturer 3M
    Chemistry Epoxy, Epoxy: Modified Epoxy
    Cure Method Base/Accelerator
    Cure Temperature (°C) 20 to 25 Room Temperature, 24, 24, 67, 93
    Cure Time (min) 10,080, 10,080, 120, 30
    Viscosity (cPs) Void filling, 700,000
    Color Gray
    Chemical Resistance Hyd Oil, JP-4 Fuel, Salt Spray, Tap Water
    High Temperature Resistance (°C) 149, 82
    Low Temperature Resistance (°C) -55
  • Technical Data for 3M 1751 B/A

    Overview
    Specifications
    Cure Specs
    Cure Temperature (°C) 20 to 25 Room Temperature, 24, 24, 67, 93 Test Method
    Cure Time (min) 10,080, 10,080, 120, 30 Test Method
    Viscosity (cPs) Void filling, 700,000
    Fixture or Handling Strength Time (min) 480 to 720 Test Method
    Work / Pot Time (min) Long, 45, 45 Test Method
    Mix Ratio 3:2 (by volume), 2:1 (by weight)
    Bond Strength
    Structural/Load-Bearing Structural
    Peel Strength (piw) 4, 5 Test Method
    Shear Strength (psi) 1,400, 2,000, 500, 1,500, 2,400, 200, 2,160, 2,440, 2,245, 2,570, 690 Test Method
    Material Resistance
    Chemical Resistance Hyd Oil, JP-4 Fuel, Salt Spray, Tap Water
    High Temperature Resistance (°C) 149, 82
    Low Temperature Resistance (°C) -55
    Conductivity
    Filler Aluminum
    Thermal Conductivity (W/m°K) 0.39 Test Method
    Hardness
    Shore D Hardness 75 to 80 Test Method
    Flexibility Rigid
    Business Information
    Shelf Life Details Store products at 60-80°F (15-27°C) for maximum storage life.;Rotate stock on a “first in-first out” basis. 3M™ Scotch-Weld™ Epoxy Adhesive 1751 B/A has a storage life of two years in unopened containers.
    Shelf Life Temperature (°F) 61 to 81
    Shelf Life (mon) 24
  • Best Practices for 3M 1751 B/A

    *See Terms of Use Below

    1. Surface Preparation

      For high strength structural bonds, paint, oxide films, oils, dust, mold release agents and all other surface contaminants must be completely removed. The amount of surface preparation depends on the required bond strength and the environmental aging resistance desired by user.

      See Vendor Technical Data sheet for more information.

    2. Application

      Use gloves to minimize skin contact with adhesive.

      Application to the substrates should be made within 45 minutes. Large quantities and/or higher temperatures will reduce this working time.

      Join the adhesive coated surfaces and allow to cure at 60°F (16°C) or above until firm. Up to 200°F (93°C), will speed curing.

      Keep parts from moving until handling strength is reached. Contact pressure is necessary. Maximum shear strength is obtained with a 3-5 mil bond line.

    3. Mixing

      This product consists of two parts. Mix thoroughly by weight or volume in the proportions specified in the Uncured Properties Section. Mix approximately 15 seconds after a uniform color is obtained.

    4. Clean-Up

      Excess uncured adhesive can be cleaned up with ketone type solvents.*

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

  • Comparable Materials for 3M 1751 B/A

    *See Terms of Use Below

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Cure Temperature Test Methods
Cure Temperature Cure Time Test Method
20 to 25°C Room Temperature
24°C
24°C
67°C
93°C
Cure Time Test Methods
Cure Time Test Method
10,080 min
10,080 min
120 min
30 min
Fixture or Handling Strength Time Test Methods
Fixture or Handling Strength Time Fixture-Handling Strength Time Temperature
480 to 720 min 24°C
Work / Pot Time Test Methods
Work / Pot Time Test Method Temperature
Long
45 min Part A, 100 gram Qty.@ 75°F 24°C Approx. Time 24°C
45 min Part B, 100 gram Qty.@ 75°F 24°C Approx. Time 24°C
Shear Strength Test Methods
Shear Strength Type Substrate Test Temperature Test Method
1,400 psi Overlap shear strength Aluminum -55°C ASTM D-1002-72
2,000 psi Overlap shear strength Aluminum 24°C ASTM D-1002-72
500 psi Overlap shear strength Aluminum 82°C ASTM D-1002-72
1,500 psi Overlap shear strength Steel -55°C ASTM D-1002-72
2,400 psi Overlap shear strength Steel 24°C ASTM D-1002-72
200 psi Overlap shear strength Steel 82°C ASTM D-1002-72
2,160 psi Overlap shear strength Steel to Aluminum
2,440 psi Overlap shear strength Steel to Steel
2,245 psi Overlap shear strength Steel to Copper
2,570 psi Overlap shear strength Aluminum to Copper
690 psi Overlap shear strength Maple to Polyester
Peel Strength Test Methods
Peel Strength Type Substrate Test Temperature Test Method
4 piw T-Peel strength Aluminum 24°C ASTM D-1876-61T
5 piw T-Peel Strength Steel 24°C ASTM D-1876-61T
Thermal Conductivity Test Methods
Thermal Conductivity Temperature
0.39 W/m°K 36°C
Shore D Hardness Test Methods
Shore D Hardness Shore Hardness Test Method
75 to 80 ASTM D-2240