• Description for Bostik 7538 General Purpose Epoxy

    A structural adhesive with high shear strength, good electrical properties, and excellent environmental resistance. It has good adhesion to metals, wood, reinforced plastics and masonry products.

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    Application Type Bond
    1 Part or 2 Part 2 Part
    Material Form Liquid
    Substrate Ceramics, Metal, Reinforced Plastics, Rubber, Wood, Steel
    Industry Industrial: General purpose
    Manufacturer Bostik
    Chemistry Epoxy
    Cure Method Resin/Hardener
    Viscosity (cPs) 40,000 to 55,000
    Color Green
    Chemical Resistance Good Inorganic Acids, Excellent Alkalis, Good Hydraulics Acids
    Relative Solvent Resistance Chemical Resistance: Excellent Solvents
    High Temperature Resistance (°C) 99
    Low Temperature Resistance (°C) -51
    Key Specifications Mil-Spec (United States Military Standard): Conforms to MIL-A-52194-A; Meets the Requirements of MMM-A-134, Type II
  • Technical Data

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  • Best Practices

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Viscosity Test Methods
Viscosity Temperature
40,000 to 55,000 cPs 20°C
Work / Pot Time Test Methods
Work / Pot Time Test Method
Shear Strength Test Methods
Shear Strength Substrate Test Temperature
3,000 psi Steel
2,000 psi -54°C
3,000 psi 24°C
500 psi 82°C
Peel Strength Test Methods
Peel Strength Type Test Temperature
3 (lbs/lineal in.) T-Peel Strength 24°C
Impact Strength Test Methods
Impact Strength Test Method
0.5 (ft.lbs./inch) Izod, of notch
Elongation Test Methods
Elongation Test Method
2 % Elongation @ break
Shore D Hardness Test Methods
Shore D Hardness Shore Hardness Test Method
80 after full cure
20 after cure time @ 68°F, after 6 hrs
70 after cure time @ 68°F, after 12 hrs
80 after cure time @ 68°F, after 24 hrs