• Description for 3M 1386

    A one-part, 100% solids, thermosetting liquid adhesive. Higher impact, peel and bond strength properties. Application by knife coating, trowel, roller coating and high pressure injection methods.

    *See Terms of Use Below

    Chemical Resistance Chemical Resistance: Fluid Resistance: .8% (Rust Inhibitor) 99.2% Tap Water, Salt Spray, Chemical Resistance: Fluid Resistance: 1.2% (Radiator Conditioner) 98.9% Tap Water, Type III Hydrocarbon Fluid, Chemical Resistance: Fluid Resistance: 26% Methyl Alcohol 74% Tap Water, Chemical Resistance, Chemical Resistance: Fluid Resistance: 28.6%Ethylene Glycol 71.4% Tap Water Blend, Chemical Resistance: Fluid Resistance: Tap Water
    Application Type Bond
    1 Part or 2 Part 1 Part
    Material Form Liquid
    Substrate Etched Aluminum, Epoxy, Metal, Aluminum
    Manufacturer 3M
    Chemistry Epoxy, Epoxy: Modified Epoxy Resin
    Application Method Trowel
    Cure Method Heat
    Cure Temperature (°C) 176 to 178
    Cure Time (min) 59 to 61
    Viscosity (cPs) 75,000 to 175,000
    Color Light Cream
    Creep Resistance Creep resistance
    High Temperature Resistance (°C) 121, 82
    Low Temperature Resistance (°C) -57, -55
    Density (g/cm³) 9.4 to 9.8 (weight (lbs/gal))
    Key Specifications Mil-Spec (United States Military Standard): A-8623A: MMM-A-132 Type III; MIL-A-8623A Type III; MMM-A-134 Type III, Mil-Spec (United States Military Standard): MMM-A-132: MMM-A-132 Type III; MIL-A-8623A Type III; MMM-A-134 Type III, Mil-Spec (United States Military Standard): MMM-A-134: MMM-A-132 Type III; MIL-A-8623A Type III; MMM-A-134 Type III

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Viscosity Test Methods
Viscosity Test Method
75,000 to 175,000 cPs Brookfield RVF No. 7 Spindle @ 4 rpm
Shear Strength Test Methods
Shear Strength Cure Time Cure Temperature Substrate Test Temperature Test Method
5,500 psi 40 to 60 min 24°C 177°C
5,500 psi 20 to 30 min 24°C 191°C
5,300 psi 15 to 20 min 24°C 204°C
4,300 psi 10 to 15 min 24°C 218°C
3,500 psi 5.00 to 7 min 24°C 232°C
2,500 psi Aluminum to Aluminum -54 to -56°C Cohesive failure
2,500 psi Aluminum to Aluminum 22 to 24°C Cohesive failure
1,250 psi Aluminum to Aluminum 81 to 83°C Cohesive failure
None Aluminum to Aluminum 120 to 122°C Cohesive failure
2,500 psi Aluminum to Aluminum -54 to -56°C Cohesive failure
2,500 psi Aluminum to Aluminum 22 to 24°C Cohesive failure
1,500 psi Aluminum to Aluminum 81 to 83°C Cohesive failure
None Aluminum to Aluminum 120 to 122°C Cohesive failure
Tensile Strength Test Methods
Tensile Strength Cure Time Cure Temperature Test Temperature Test Method
8,293 psi 60 min 177°C -40°C Cure Cycle: 1 hour @ 350°F (177°C)
10,189 psi 60 min 177°C 24°C Cure Cycle: 1 hour @ 350°F (177°C)
3,178 psi 60 min 177°C 82°C Cure Cycle: 1 hour @ 350°F (177°C)
Peel Strength Test Methods
Peel Strength Type Cure Time Cure Temperature Substrate Test Temperature
10 piw T-peel strength 60 min 177°C Etched Aluminum 22 to 24°C
Cleavage Strength Test Methods
Cleavage Strength Substrate Test Temperature Test Method
1500 (lbs) Aluminum to Aluminum 22 to 24°C ASTM D 1062-49T, MIL-A-8623
Impact Strength Test Methods
Impact Strength Substrate Test Temperature Test Method
Higher Aluminum to Aluminum 22 to 24°C Cohesive failure, FED STD-MMM-A-175
5 (ft./lbs.) Aluminum to Aluminum 22 to 24°C Cohesive failure, FED STD-MMM-A-175
45 (ft./lbs) 22 to 26°C Cohesive Failure, Impact strength was measured according to ASTM D 950-54 (Izod Impact Tester 30 lbs. wt.) methods using 1/2 in. x 1/2 in. square specimens of 2024 T3 aluminum.Scotch-Weld EC-1386 was applied in a thin coat (.003 in. x .005 in. thick) on both surfaces.
Dielectric Constant Test Methods
Dielectric Constant Temperature
5.11 23°C
5.28 60°C
5.55 90°C
6.07 105°C
7.35 120°C
8.37 135°C
Dissipation Factor Test Methods
Dissipation Factor Temperature
0.05700 23°C
0.05900 60°C
0.10100 90°C
0.12900 105°C
0.13800 120°C
183.00000 135°C
Coefficient of Thermal Expansion (CTE) Test Methods
Coefficient of Thermal Expansion (CTE) CTE Temperature (°C)
4.65e-5 -40 to 44°C
4.96e-5 44 to 116°C