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Description for Henkel Armstrong A-12 Epoxy Resin 1:1
A general purpose adhesive, combines low toxicity with good physical properties. This two-part adhesive has a non-critical mixing ratio with 1:1 used most frequently. The mix ratio can be varied to obtain a more flexible or more rigid bond by increasing or decreasing respectively, the concentration of Part B.Brand Armstrong Application Type Bond 1 Part or 2 Part 2-Part Material Form Liquid Substrate Al, Ceramic, Metal, Plastics, Wood Manufacturer Henkel Chemistry Epoxy Cure Method Part A/Part B Cure Temperature (°C) 93, 300 Cure Time (min) 60, 5.00 Viscosity (cPs) 80,000 High Temperature Resistance (°C) 82 Low Temperature Resistance (°C) -51 -
Technical Data for Henkel Armstrong A-12 Epoxy Resin 1:1
Overview
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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
- Industrial - Cryogenic
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Chemistry
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Cure Method
- 2-Part Cure - Part A/Part B
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Brand
- Armstrong
Specifications
Cure Specs
Cure Temperature (°C) 93, 300 Test Method Cure Time (min) 60, 5.00 Test Method Viscosity (cPs) 80,000 Work / Pot Time (min) 120, 60 Test Method Mix Ratio 1:1 (by volume), 1:1 (by weight) Bond Strength
General Bond Strength (psi) 2,000 Test Method Shear Strength (psi) 5,000, 700, 2,500 Test Method Cleavage Strength (psi) 1,500 Test Method Tensile Strength (psi) 5,000 Test Method Material Resistance
High Temperature Resistance (°C) 82 Low Temperature Resistance (°C) -51 Hardness
Shore D Hardness 78 Elongation (%) <8 Flexibility Flexible, rigid Other Properties
Specific Gravity 1.320 Test Method Coefficient of Thermal Expansion (CTE) 3.8e-5 (in./ in/°F) Business Information
Shelf Life Details Shelf life is one year when stored below 90°F out of sunlight and in original unopened containers of pints or greater. Shelf life will vary with specialty packages. Shelf Life Temperature (°F) <90 Shelf Life (mon) 12 -
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Best Practices for Henkel Armstrong A-12 Epoxy Resin 1:1
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Surface Preparation
The surfaces to be bonded should be clean and dry (for critical applications refer to our suggested surface preparation procedures - Bulletin No. 964)
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Application
Apply the adhesive to surfaces to be bonded (preferably both surfaces) and press together. Light clamping may be used to keep parts in position during curing.
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Mixing
Thoroughly mix the A-12 Part B with the A-12 part A in a clean discardable container using correct mix ratio. Avoid the introduction of excess air.
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Cure Temperature Test Methods
Cure Temperature | Cure Time Test Method |
---|---|
93°C | Optimum cure |
300°C | Fast cure |
Cure Time Test Methods
Cure Time | Test Method |
---|---|
60 min | Optimum cure |
5.00 min | Fast cure |
Work / Pot Time Test Methods
Work / Pot Time | Test Method | Temperature |
---|---|---|
120 min | 100 gms @77°F | 25°C |
60 min | 1# @ 77°F | 25°C |
Cleavage Strength Test Methods
Cleavage Strength | Cure Time | Cure Temperature |
---|---|---|
1,500 psi | 120 min | 165°C |
General Bond Strength Test Methods
General Bond Strength | Cure Time | Cure Temperature |
---|---|---|
2,000 psi | 120 min | 74°C |
Tensile Strength Test Methods
Tensile Strength | Type | Cure Time | Cure Temperature | Substrate |
---|---|---|---|---|
5,000 psi | 120 min | 74°C |
Shear Strength Test Methods
Shear Strength | Type | Cure Time | Cure Temperature | Substrate | Test Temperature |
---|---|---|---|---|---|
5,000 psi | Tensile Shear Strength | 120 min | 74°C | al/al | 25°C |
700 psi | Tensile Shear Strength | 120 min | 74°C | al/al | 82°C |
2,500 psi | Tensile Shear Strength | 120 min | 74°C | al/al | -51°C |
Specific Gravity Test Methods
Specific Gravity | Temperature |
---|---|
1.320 | 25°C |

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