Armstrong A-661 Epoxy Adhesive

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Armstrong A-661 Epoxy Adhesive
Categories:	Polymer; Adhesive; Thermoset; Epoxy; Epoxy Adhesive
Material Notes:	A truly unique, two-component, room temperature curing thixotropic epoxy adhesive system, which exhibits good bond strength at service temperatures up to 400°F. Ideal for applications where resistance to high service temperatures is required, but where a room temperature cure is desirable. Information provided by Ellsworth Adhesives.
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Mechanical Properties	Metric	English	Comments

Hardness, Shore D	82	82
Tensile Strength, Ultimate	43.8 MPa	6350 psi	after optimum cure
Elongation at Break	2.5 %	2.5 %
Adhesive Bond Strength	34.8 MPa	5050 psi	Steel-Steel; after optimum cure
	17.2 MPa @Temperature -54.4 °C	2500 psi @Temperature -66.0 °F	Aluminum-Aluminum tensile shear
	22.8 MPa @Temperature 82.2 °C	3300 psi @Temperature 180 °F	Aluminum-Aluminum tensile shear
	26.9 MPa @Temperature 25.0 °C	3900 psi @Temperature 77.0 °F	Aluminum-Aluminum tensile shear

Thermal Properties	Metric	English	Comments
CTE, linear	35.0 µm/m-°C @Temperature 20.0 °C	19.4 µin/in-°F @Temperature 68.0 °F
Maximum Service Temperature, Air	204 °C	400 °F
Glass Transition Temp, Tg	115 °C	239 °F

Processing Properties	Metric	English	Comments
Processing Temperature	22.2 °C	72.0 °F
	149 °C	300 °F	Optimum cure is 10 min. @ 300°F
Pot Life	<= 180 min @Temperature 25.0 °C	<= 180 min @Temperature 77.0 °F	100 g

Descriptive Properties
Color	Off White
Mix Ratio	4/1		By Weight

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