Henkel Armstrong A-42
Brand Armstrong Application Type Bond 1 Part or 2 Part 2-Part Material Form Liquid Substrate Al Manufacturer Henkel Chemistry Epoxy Application Method Trowel, metal spatula Cure Method Resin/hardener Application Temperature (°F) 70 to 90 Cure Temperature (°C) 25 Room Temperature, 100 Cure Time (min) 10,080, 120 Viscosity (cPs) 280,000
Technical Data for Henkel Armstrong A-42
- Adhesive - Bond
1 Part or 2 Part
- Aluminum - Al
- Dispenser - mechanical applicator, any clean tool, wooden coffee-stirrer or equivalent
- Spatula/Trowel - metal spatula, Trowel
- 2-Part Cure - Resin/hardener
Application Temperature (°F) 70 to 90 Cure Temperature (°C) 25 Room Temperature, 100 Cure Time (min) 10,080, 120 Viscosity (cPs) 280,000 Fixture or Handling Strength Time (min) Overnight Test Method Work / Pot Time (min) 90 Test Method
Shear Strength (psi) >2,500, >1,500 Test Method
Shelf Life Details Storage: Store below 25°C out of sunlight and in original unopened containers. Refer to packaging specific quote for shlef life information. Shelf Life Temperature (°F) <77
Best Practices for Henkel Armstrong A-42
Surface to be bonded should be clean and dry.
The material should be spread thinly and evenly. Glue lines as thick as .101" will provide good strength but the general rule is--- the thinner the better. The important thing is that the surfaces being bonded are thoroughly "welted out" with the resin system. Once applied, the joints being bonded should be assembled immediately, under no circumstances would this open assembly times exceed 30 minutes. No pressure is required other than that necessary to hold to assembly in position until the resin cures.
The Part A and Part B must be thoroughly mixed before the system is ready for use.
Lower and higher temperatures can be employed but the working life will be reduced as the temperature is increased and the working life will be extended as the temperature decreases. At lower temperatures, the material is quiet vouches and not as easy to mix.
Either mixture may be cured for 24 hours @ 77°F. Curing can be accelerated by heating for 1 - 2 hours at 165°F.
Then uncured material may be removed from mixing utensils etc. with solvent such as Methyl Ethyl ketone (MEK) and/or Cellosolve or equivalent.
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Fixture or Handling Strength Time Test Methods
|Fixture or Handling Strength Time||Fixture-Handling Strength Time Temperature|
Work / Pot Time Test Methods
|Work / Pot Time||Temperature|
Shear Strength Test Methods
|Shear Strength||Type||Cure Time||Cure Temperature||Substrate|
|>2,500 psi||Tensile shear strength||120 min||100°C||Al/Al|
|>1,500 psi||Tensile shear strength||10,080 min||25°C||Al/Al|