• Description for 3M 2158 B/A

    Long worklife rigid epoxy • 8-12 hrs. handling strength • General purpose

    *See Terms of Use Below

    Application Type Bond
    1 Part or 2 Part 2 Part
    Material Form Liquid
    Substrate Aluminum FPL Etch, Glass, Metal, Plastic, Rubber, Steel, Wood, Concrete
    Manufacturer 3M
    Chemistry Epoxy, Synthetic Resin, Modified Epoxy
    Cure Method Base/Accelerator
    Cure Temperature (°C) 20 to 25 Room Temperature, 24, 24, 49, 93
    Cure Time (min) 10,080, 10,080, 120, 30
    Viscosity (cPs) 375,000
    Color Gray
    Chemical Resistance Air, Salt spray, Tap Water
    High Temperature Resistance (°C) 82
    Low Temperature Resistance (°C) -55
    Other Resistance Aging resistance
    Density (g/cm³) 12.8 to 13.2 (weight (lbs/gal)), 12.4 to 13.2 (weight (lbs/gal))
  • Technical Data

    Overview
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    Specifications
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  • Best Practices

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Cure Temperature Test Methods
Cure Temperature Cure Time Test Method
20 to 25°C Room Temperature
24°C
24°C
49°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 Test Method Fixture-Handling Strength Time Temperature
480 to 720 min Cured 24°C
Viscosity Test Methods
Viscosity Temperature
375,000 cPs 24°C
Work / Pot Time Test Methods
Work / Pot Time Test Method Temperature
120 min Approximate time for a 100 gram quantity @ 75°F [24°C] 24°C
Long
Shear Strength Test Methods
Shear Strength Type Substrate Test Temperature Test Method
1,500 psi Overlap shear strength Aluminum FPL Etch -55°C ASTM D-1002-72
2,000 psi Overlap shear strength Aluminum FPL Etch 24°C ASTM D-1002-72
400 psi Overlap shear strength Aluminum FPL Etch 82°C ASTM D-1002-72
Peel Strength Test Methods
Peel Strength Type Substrate Test Temperature Test Method
3 piw T-Peel Strength Aluminum FPL Etch 24°C ASTM D-1876-61T
Dielectric Constant Test Methods
Dielectric Constant Temperature Test Method
5.60 23°C Dielectric constant, 1 KHz, Cured
Dielectric Strength Test Methods
Dielectric Strength Test Method
980 V/mil Cured
Dissipation Factor Test Methods
Dissipation Factor Temperature Test Method
0.01900 23°C Dissipation Factor, 1 KHz, Cured
Volume Resistivity Test Methods
Volume Resistivity Test Method
1.4e15 (ohms/cm) Cured
Shore D Hardness Test Methods
Shore D Hardness Shore Hardness Test Method
85 ASTM D-2240
Coefficient of Thermal Expansion (CTE) Test Methods
Coefficient of Thermal Expansion (CTE) CTE Temperature (°C)
53e-6 (in./ in/°C) -50 to 30°C
135e-6 (in./ in/°C) 70 to 130°C