Henkel Loctite E-308 Datasheet Henkel Loctite E-308

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  • Description for Henkel Loctite E-308

    • Single component toughened epoxy • High strength • Excellent impact resistance • Excellent peel strength<br/>• Excellent heat resistance • Bonds well to metals, thermoset and composite materials •<br/>

    Note: This material has been discontinued. Please view the Manufacturer's Recommended Replacement tab or call us at (262) 293-7970 for additional help.

    *See Terms of Use Below

    Brand Loctite, Bondmaster
    Chemical Resistance Alcohols, Chemical Resistance: Halogenated solvents, Chemical Resistance: Fluid Resistance: Water, Aqueous, Hydrocarbons, Salt spray
    Application Type Bond, Pot
    1 Part or 2 Part 1-Part
    Material Form Liquid
    Substrate Aluminum, Copper, Glass, Carbide, Plastic, Steel, Stainless Steel, Brass, Ferrite, SMC Plastic, Metal, Thermoset Plastics
    Manufacturer Henkel
    Chemistry Epoxy, Toughened
    Cure Method Heat
    Cure Temperature (°C) 150, 180, 200
    Cure Time (min) 45, 17, 12
    Viscosity (cPs) Low, 200,000, Free Flow, Self-leveling
    Color Silver-Gray
    High Temperature Resistance (°C) 204
    Low Temperature Resistance (°C) -85
    Volume Resistivity (O) 1.5e6 (ohms/cm)

  • Technical Data for Henkel Loctite E-308

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    Overview
    • Chemical Resistance
      • Chemical Resistance : Fluid Resistance : Water Resistance - Water
      • Chemical Resistance - Alcohols, Aqueous, Hydrocarbons, Salt spray
      • Chemical Resistance : Relative Solvent Resistance - Halogenated solvents
    • Application Type
    • 1 Part or 2 Part
      • 1-Part
    • Material Form
      • Liquid
    • Substrate
    • Industry
    • Chemistry
    • Cure Method
      • Heat
    • Color
      • Gray - Silver-Gray
    • Brand
      • Loctite
      • Bondmaster
    • Also Known As
      • Old Name - ESP308
    Specifications
    Cure Specs
    Cure Temperature (°C) 150, 180, 200
    Cure Time (min) 45, 17, 12
    Viscosity (cPs) Low, 200,000, Free Flow, Self-leveling Test Method
    Set Time (min) 2.33, 0.67, 0.33 Test Method
    Work / Pot Time (min) 1,440
    Bond Strength
    Structural/Load-Bearing Structural
    General Bond Strength (psi) High
    Peel Strength (piw) 24 (pli), Excellent Test Method
    Shear Strength (psi) 6,000, 5,800, 5,800, 4,000, 3,800, 5,800, 5,800, 1,800 Test Method
    Material Resistance
    High Temperature Resistance (°C) 204
    Impact Resistance Excellent impact resistance
    Low Temperature Resistance (°C) -85
    Moisture/Humidity Resistance Excellent Heat resistance
    Vibration Resistance/Shock Resistance Excellent vibration resistance
    Conductivity
    Filler Metallic
    Thermal Conductivity (W/m°K) 0.71
    Volume Resistivity (O) 1.5e6 (ohms/cm)
    Other Properties
    Glass Transition Temp (Tg) (°C) 118
    Specific Gravity 1.500 Test Method
    Coefficient of Thermal Expansion (CTE) 53.4e-6 (in./ in/°C), 178e-6 (in./ in/°C) Test Method
    Flash Point (°F) >199.4
    % Solids (%) 100
    Business Information
    Shelf Life Details Store product in cool, dry location, in unopened containers at a temperature between 2 to 8 C (36 to 48 F) unless otherwise labeled. Optimal storage is at the lower half of this temperature range. To prevent contamination of unused product, do not return any material to its original container. For further specific shelf life information, contact Application Engineering at (860) 571-5100.
    Shelf Life Temperature (°F) 36 to 46

  • Best Practices for Henkel Loctite E-308

    *See Terms of Use Below

    1. Surface Preparation

      For optimum bond strength, substrate surfaces must be dry and preferably clean. Chemical treatment of metallic surfaces gives optimum durability, but a simple abrade and degrease process may often be adequate. The high bond strength achieved even on oily surfaces is sometimes beneficial where removal of oil is not practical.

    2. Clean-Up

      Unreacted epoxy can be cleaned using acetone, isopropanol, or MEK.

  • Manufacturer's Recommended Replacement Materials

    *See Terms of Use Below

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Set Time Test Methods
Set Time Set Temperature
2.33 min 150°C
0.67 min 180°C
0.33 min 200°C
Viscosity Test Methods
Viscosity Temperature
Low
200,000 cPs 25°C
Free Flow
Self-leveling
Peel Strength Test Methods
Peel Strength Substrate Test Method
24 (pli) Steel/Steel ASTM 1876
Excellent
Shear Strength Test Methods
Shear Strength Substrate Test Method
6,000 psi Steel/Steel ASTM D1002
5,800 psi Aluminum/Aluminum ASTM D1002
5,800 psi Stainless steel/Stainless steel ASTM D1002
4,000 psi Copper/Copper ASTM D1002
3,800 psi Brass/Brass ASTM D1002
5,800 psi Carbide/Carbide ASTM D1002
5,800 psi Ferrite/Ferrite ASTM D1002, Denotes substrate failure of the bonded material, not the adhesive joint.
1,800 psi SMC Plastic/SMC Plastic ASTM D1002, Denotes substrate failure of the bonded material, not the adhesive joint.
Coefficient of Thermal Expansion (CTE) Test Methods
Coefficient of Thermal Expansion (CTE) CTE Test Method
53.4e-6 (in./ in/°C) Below Tg
178e-6 (in./ in/°C) Above Tg
Specific Gravity Test Methods
Specific Gravity Temperature
1.500 25°C