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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.Chemical Resistance Excellent Alkalis, Chemical Resistance: Excellent Solvents, Chemical Resistance: Good Inorganic Acids, Chemical Resistance: Good Hydraulics Acids Application Type Bond 1 Part or 2 Part 2-Part Material Form Liquid Substrate Ceramics, Metal, Reinforced Plastics, Rubber, Steel, Wood Industry General purpose Manufacturer Bostik Chemistry Epoxy Cure Method Resin/Hardener Viscosity (cPs) 40,000 to 55,000 Color Green High Temperature Resistance (°C) 99 Low Temperature Resistance (°C) -51 Volume Resistivity (O) 10(12) (cm) 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 for Bostik 7538 General Purpose Epoxy
Overview
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Chemical Resistance
- Chemical Resistance - Excellent Alkalis
- Chemical Resistance : Relative Solvent Resistance - Excellent Solvents
- Chemical Resistance : Acid Resistance - Good Inorganic Acids, Good Hydraulics Acids
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Application Type
- Adhesive - Bond
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1 Part or 2 Part
- 2-Part
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Material Form
- Liquid
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Industry
- General Purpose
- Construction - Masonry
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Chemistry
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Application Method
- Dispenser - dual barrel syringe
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Cure Method
- 2-Part Cure - Resin/Hardener
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Color
- Green
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Key Specifications
- Mil-Spec (United States Military Standard) : A-52194-A - Conforms to MIL-A-52194-A; Meets the Requirements of MMM-A-134, Type II
- Mil-Spec (United States Military Standard) : MMM-A-134 - Conforms to MIL-A-52194-A; Meets the Requirements of MMM-A-134, Type II
Specifications
Cure Specs
Viscosity (cPs) 40,000 to 55,000 Test Method Mix Ratio 1:1 (by volume) Bond Strength
Structural/Load-Bearing Structural Peel Strength (piw) 3 (lbs/lineal in.) Test Method Shear Strength (psi) High, 3,000, 2,000, 3,000, 500 Test Method Impact Strength (psi) 0.5 (ft.lbs./inch) Test Method Compressive Strength (psi) 11,000 Material Resistance
Environmental Resistance Excellent environmental resistance High Temperature Resistance (°C) 99 Low Temperature Resistance (°C) -51 Conductivity
Volume Resistivity (O) 10(12) (cm) Hardness
Shore D Hardness 80, 20, 70, 80 Test Method Elongation (%) 2 Test Method Other Properties
Specific Gravity 1.400 Coefficient of Thermal Expansion (CTE) 40e-6 Business Information
Shelf Life Details For optimum shelf-life of these products, store @ 50~90°F (10~32°C). Storing at lower temperatures causes a temporary increase in viscosity. The ICC shipping classification is “Adhesives NOI”.;The maximum shelf-life is 2 (two) years from date of manufacture (“DoM”). Bostik may, in its distribution literature or in other written or verbal communications, state the shelf-life as “one (1) year from time of shipment to the original purchaser” with the intention that this allows for a reasonable period of time the product may be stocked by a distributor while still maintaining an acceptable shelf-life of at least 1 year. Shelf Life Temperature (°F) 50 to 90 Shelf Life Type from date of manufacture Shelf Life (mon) 24 -
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Best Practices for Bostik 7538 General Purpose Epoxy
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Mixing
Resin and hardener are metered automatically in proper ratio, mixed in the static mixer and dispensed with pinpoint accuracy. No measuring, mixing or waste
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Comparable Materials for Bostik 7538 General Purpose Epoxy
Spec Engine® Results
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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 |
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Impact Strength Test Methods
Impact Strength | Test Method |
---|---|
0.5 (ft.lbs./inch) | Izod, of notch |
Peel Strength Test Methods
Peel Strength | Type | Test Temperature |
---|---|---|
3 (lbs/lineal in.) | T-Peel Strength | 24°C |
Shear Strength Test Methods
Shear Strength | Substrate | Test Temperature |
---|---|---|
High | ||
3,000 psi | Steel | |
2,000 psi | -54°C | |
3,000 psi | 24°C | |
500 psi | 82°C |
Elongation Test Methods
Elongation | Test Method |
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2 % | Elongation @ break |
Shore D Hardness Test Methods
Shore D Hardness | Shore Hardness Test Method |
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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 |