• Description for 3M 1838 B/A Green

    Long worklife rigid epoxy • 8-12 hrs. handling strength • Meets MIL-A-23941A • Excellent environmental resistance

    *See Terms of Use Below

    Application Type Bond
    1 Part or 2 Part 2 Part
    Material Form Liquid
    Substrate Aluminum, Glass, Many Metal, Some Plastic, Rubbers, Cold rolled Steel, Woods, Stainless Steel, Stainless Steel, 2024 T3 clad aluminum , Steel
    Manufacturer 3M
    Chemistry Epoxy
    Cure Method Base/Accelerator
    Cure Temperature (°C) 20 to 25, 24, 66, 93
    Cure Time (min) 10,080, 120, 30
    Color Green
    Chemical Resistance Hydraulic Oil, Tap Water, White Gas
    High Temperature Resistance (°C) 82
    Low Temperature Resistance (°C) -55
    Key Specifications Mil-Spec (United States Military Standard): MIL-A-23941A; Mil-0-5606
  • Technical Data

    Overview
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    Specifications
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  • Best Practices

    *See Terms of Use Below

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Fixture or Handling Strength Time Test Methods
Fixture or Handling Strength Time Fixture-Handling Strength Time Temperature
360 to 600 min 25°C
15 to 20 min 66°C
Work / Pot Time Test Methods
Work / Pot Time Test Method Temperature
60 min Mixed 100 (gms) 23°C
Long
Peel Strength Test Methods
Peel Strength Type Substrate Test Temperature Test Method
2 piw T-Peel strength 2024 T3 clad aluminum -55°C T-Peel bonds were measured on 1 in. wide specimens cut from two FPL etched 8 in. x 8 in. x .032 in., 2024 T3 clad aluminum panels bonded together. The separation note of the testing jaws was 20 in./minute. Tests similar to ASTM D-1876
4 piw T-Peel Strength 2024 T3 clad aluminum 24°C T-Peel bonds were measured on 1 in. wide specimens cut from two FPL etched 8 in. x 8 in. x .032 in., 2024 T3 clad aluminum panels bonded together. The separation note of the testing jaws was 20 in./minute. Tests similar to ASTM D-1876
4 piw T-Peel strength 2024 T3 clad aluminum 82°C T-Peel bonds were measured on 1 in. wide specimens cut from two FPL etched 8 in. x 8 in. x .032 in., 2024 T3 clad aluminum panels bonded together. The separation note of the testing jaws was 20 in./minute. Tests similar to ASTM D-1876
Tensile Strength Test Methods
Tensile Strength Test Method
4,290 psi Cured, Ultimate
Shear Strength Test Methods
Shear Strength Type Substrate Chemical Test Temperature Test Humidity Test Method
High
1,500 psi Overlap shear strength 2024 T3 clad aluminum -55°C Overlap shear strength was measured on FPL etched 1 in. wide by 1/2 in. overlap specimens. The bonds were made from 2 panels of 4 in. x 7 in. x .063 in., 2024 T3 clad aluminum bonded together and cut into 1 in. wide specimens. The separation rate of the testing jaws was .1 in./minute. Tests similar to ASTM D-1002.
3,000 psi Overlap shear strength 2024 T3 clad aluminum 24°C Overlap shear strength was measured on FPL etched 1 in. wide by 1/2 in. overlap specimens. The bonds were made from 2 panels of 4 in. x 7 in. x .063 in., 2024 T3 clad aluminum bonded together and cut into 1 in. wide specimens. The separation rate of the testing jaws was .1 in./minute. Tests similar to ASTM D-1002.
500 psi Overlap shear sterngth 2024 T3 clad aluminum 82°C Overlap shear strength was measured on FPL etched 1 in. wide by 1/2 in. overlap specimens. The bonds were made from 2 panels of 4 in. x 7 in. x .063 in., 2024 T3 clad aluminum bonded together and cut into 1 in. wide specimens. The separation rate of the testing jaws was .1 in./minute. Tests similar to ASTM D-1002.
2,000 to 2,200 psi Overlap shear strength Cold Rolled Steel 24°C Overlap shear on cold rolled steel (20 gauge), 302 stainless steel (50 mils thick), and 2024 T3 clad aluminum (63 mils thick) in various environments after 365 days aging. All substrates were sandblasted prior to bonding. Data are in psi and tested at 75°F (24°C).
1,950 psi Overlap shear strength Cold Rolled Steel Tap water 24°C Overlap shear on cold rolled steel (20 gauge), 302 stainless steel (50 mils thick), and 2024 T3 clad aluminum (63 mils thick) in various environments after 365 days aging. All substrates were sandblasted prior to bonding. Data are in psi and tested at 75°F (24°C).
2,200 psi Overlap shear strength Cold Rolled Steel 49°C 100 % Overlap shear on cold rolled steel (20 gauge), 302 stainless steel (50 mils thick), and 2024 T3 clad aluminum (63 mils thick) in various environments after 365 days aging. All substrates were sandblasted prior to bonding. Data are in psi and tested at 75°F (24°C)., RH
2,250 psi Overlap shear strength Cold Rolled Steel Hydraulic Oil (Mil-0-5606) 24°C Overlap shear on cold rolled steel (20 gauge), 302 stainless steel (50 mils thick), and 2024 T3 clad aluminum (63 mils thick) in various environments after 365 days aging. All substrates were sandblasted prior to bonding. Data are in psi and tested at 75°F (24°C).
1,100 psi Overlap shear strength Cold Rolled Steel White Gas 24°C Overlap shear on cold rolled steel (20 gauge), 302 stainless steel (50 mils thick), and 2024 T3 clad aluminum (63 mils thick) in various environments after 365 days aging. All substrates were sandblasted prior to bonding. Data are in psi and tested at 75°F (24°C).
3,400 to 3,800 psi Overlap shear strength Stainless Steel 24°C Overlap shear on cold rolled steel (20 gauge), 302 stainless steel (50 mils thick), and 2024 T3 clad aluminum (63 mils thick) in various environments after 365 days aging. All substrates were sandblasted prior to bonding. Data are in psi and tested at 75°F (24°C).
2,750 psi Overlap shear strength Stainless Steel Tap water 24°C Overlap shear on cold rolled steel (20 gauge), 302 stainless steel (50 mils thick), and 2024 T3 clad aluminum (63 mils thick) in various environments after 365 days aging. All substrates were sandblasted prior to bonding. Data are in psi and tested at 75°F (24°C).
1,250 psi Overlap shear strength Stainless Steel 49°C 100 % Overlap shear on cold rolled steel (20 gauge), 302 stainless steel (50 mils thick), and 2024 T3 clad aluminum (63 mils thick) in various environments after 365 days aging. All substrates were sandblasted prior to bonding. Data are in psi and tested at 75°F (24°C)., RH
3,600 psi Overlap shear strength Stainless Steel Hydraulic Oil (Mil-0-5606) 49°C Overlap shear on cold rolled steel (20 gauge), 302 stainless steel (50 mils thick), and 2024 T3 clad aluminum (63 mils thick) in various environments after 365 days aging. All substrates were sandblasted prior to bonding. Data are in psi and tested at 75°F (24°C).
3,250 psi Overlap shear strength Stainless Steel White Gas 24°C Overlap shear on cold rolled steel (20 gauge), 302 stainless steel (50 mils thick), and 2024 T3 clad aluminum (63 mils thick) in various environments after 365 days aging. All substrates were sandblasted prior to bonding. Data are in psi and tested at 75°F (24°C).
2,400 to 2,500 psi Overlap shear strength Aluminum 24°C Overlap shear on cold rolled steel (20 gauge), 302 stainless steel (50 mils thick), and 2024 T3 clad aluminum (63 mils thick) in various environments after 365 days aging. All substrates were sandblasted prior to bonding. Data are in psi and tested at 75°F (24°C).
2,250 psi Overlap shear strength Aluminum Tap water 24°C Overlap shear on cold rolled steel (20 gauge), 302 stainless steel (50 mils thick), and 2024 T3 clad aluminum (63 mils thick) in various environments after 365 days aging. All substrates were sandblasted prior to bonding. Data are in psi and tested at 75°F (24°C).
1,050 psi Overlap shear strength Aluminum 49°C 100 % Overlap shear on cold rolled steel (20 gauge), 302 stainless steel (50 mils thick), and 2024 T3 clad aluminum (63 mils thick) in various environments after 365 days aging. All substrates were sandblasted prior to bonding. Data are in psi and tested at 75°F (24°C)., RH
2,900 psi Overlap shear strength Aluminum Hydraulic Oil (Mil-0-5606) 24°C Overlap shear on cold rolled steel (20 gauge), 302 stainless steel (50 mils thick), and 2024 T3 clad aluminum (63 mils thick) in various environments after 365 days aging. All substrates were sandblasted prior to bonding. Data are in psi and tested at 75°F (24°C).
2,150 psi Overlap shear strength Aluminum White Gas 24°C Overlap shear on cold rolled steel (20 gauge), 302 stainless steel (50 mils thick), and 2024 T3 clad aluminum (63 mils thick) in various environments after 365 days aging. All substrates were sandblasted prior to bonding. Data are in psi and tested at 75°F (24°C).
Dielectric Constant Test Methods
Dielectric Constant Temperature Test Method
6.06 24°C Cured, 1 KHz
Dissipation Factor Test Methods
Dissipation Factor Temperature Test Method
0.01200 24°C Cured, 1 KHz
Thermal Conductivity Test Methods
Thermal Conductivity Test Method
0.29 W/m°K Cured
Volume Resistivity Test Methods
Volume Resistivity Temp (°C) Test Method
1.5e15 (ohms/cm) 24°C Cured
Elongation Test Methods
Elongation Test Method
2 to 3 % Cured, Approx.
Modulus Test Methods
Modulus Test Method
344,000 psi Cured, Elasticity
Shore D Hardness Test Methods
Shore D Hardness Shore Hardness Test Method
80 to 85 Cured, Approx.
Coefficient of Thermal Expansion (CTE) Test Methods
Coefficient of Thermal Expansion (CTE) CTE Temperature (°C) CTE Test Method
79e-6 (in./ in/°C) 0 to 6°C Cured
Glass Transition Temp (Tg) Test Methods
Glass Transition Temp (Tg) Glass Transition Temperature (Tg) Test Method
55°C Cured