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Metal adhesives

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Armstrong A-2/E Epoxy Adhesive
Categories: Polymer; Adhesive; Thermoset; Epoxy; Epoxy Adhesive

Material Notes: This off-white paste epoxy is a versatile adhesive systems. The choice of one of four recommended Activators (A, E, W or H-20) makes A-2 Adhesive an ideal choice for many applications. A-2 with Activators W or H-20 has a very low thermal expansion coefficient, especially important for bonding ceramics, porcelain, etc. A-2 with Activator A is qualified under Mil. Spec. MIL-A-47284 (MI).

Information provided by Ellsworth Adhesives.

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Physical PropertiesOriginal ValueComments
Viscosity 170000 cPMixed
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore D 87
Tensile Strength, Ultimate 6350 psiafter optimum cure
Elongation at Break 3.7 %
Adhesive Bond Strength 8550 psiSteel-Steel; after optimum cure
 2300 psi
@Temperature -54.4 °C
Aluminum-Aluminum tensile shear
 2600 psi
@Temperature 82.2 °C
Aluminum-Aluminum tensile shear
 3100 psi
@Temperature 25.0 °C
Aluminum-Aluminum tensile shear
 
Thermal PropertiesOriginal ValueComments
CTE, linear 55.0 µm/m-°C
@Temperature 20.0 °C
Glass Transition Temp, Tg 84.0 °C
 
Processing PropertiesOriginal ValueComments
Processing Temperature 200 °FOptimum cure is 1 hr. @ 200°F
Pot Life <= 90.0 min
@Temperature 25.0 °C
100 g
 
Descriptive Properties
ColorWhite
Mix Ratio100/6By Weight

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PARM04 / 24536

Metal adhesives

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