Armstrong A-7 Epoxy Adhesive

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Armstrong A-7 Epoxy Adhesive
Categories:	Polymer; Adhesive; Thermoset; Epoxy; Epoxy Adhesive
Material Notes:	Clear, flexible, 5-minute cure structural bonding plastic adhesive. Develops high performance, high impact durable bonds for operating temperatures from -65° to +250°. Supplied in 1:1 ratio dispense kits for easy application. Information provided by Ellsworth Adhesives.
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Physical Properties	Metric	English	Comments

Viscosity	20000 cP	20000 cP	Mixed

Mechanical Properties	Metric	English	Comments
Hardness, Shore D	50	50
Tensile Strength, Ultimate	37.9 MPa	5500 psi	after optimum cure
Elongation at Break	8.0 %	8.0 %
Adhesive Bond Strength	35.2 MPa	5100 psi	Steel-Steel; after optimum cure
	11.7 MPa @Temperature 82.2 °C	1700 psi @Temperature 180 °F	Aluminum-Aluminum tensile shear
	16.9 MPa @Temperature -54.4 °C	2450 psi @Temperature -66.0 °F	Aluminum-Aluminum tensile shear
	24.8 MPa @Temperature 25.0 °C	3600 psi @Temperature 77.0 °F	Aluminum-Aluminum tensile shear

Thermal Properties	Metric	English	Comments
CTE, linear	65.0 µm/m-°C @Temperature 20.0 °C	36.1 µin/in-°F @Temperature 68.0 °F
Maximum Service Temperature, Air	121 °C	250 °F
Minimum Service Temperature, Air	-53.9 °C	-65.0 °F
Glass Transition Temp, Tg	55.0 °C	131 °F

Processing Properties	Metric	English	Comments
Processing Temperature	22.2 °C	72.0 °F
	73.9 °C	165 °F	Optimum cure is 20 min. @ 165°F
Pot Life	<= 5.00 min @Temperature 25.0 °C	<= 5.00 min @Temperature 77.0 °F	100 g

Descriptive Properties
Color	Clear
Mix Ratio	100/100		By Weight

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PARM13 / 24545

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