Armstrong A-2/W Epoxy Adhesive

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Armstrong A-2/W 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 Properties	Metric	English	Comments

Viscosity	130000 cP	130000 cP	Mixed

Mechanical Properties	Metric	English	Comments
Hardness, Shore D	80	80
Tensile Strength, Ultimate	42.7 MPa	6200 psi	after optimum cure
Elongation at Break	3.1 %	3.1 %
Adhesive Bond Strength	39.0 MPa	5650 psi	Steel-Steel; after optimum cure
	8.27 MPa @Temperature 82.2 °C	1200 psi @Temperature 180 °F	Aluminum-Aluminum tensile shear
	20.0 MPa @Temperature -54.4 °C	2900 psi @Temperature -66.0 °F	Aluminum-Aluminum tensile shear
	37.6 MPa @Temperature 25.0 °C	5450 psi @Temperature 77.0 °F	Aluminum-Aluminum tensile shear

Thermal Properties	Metric	English	Comments
CTE, linear	86.0 µm/m-°C @Temperature 20.0 °C	47.8 µin/in-°F @Temperature 68.0 °F
Glass Transition Temp, Tg	60.0 °C	140 °F

Processing Properties	Metric	English	Comments
Processing Temperature	22.2 °C	72.0 °F
	93.3 °C	200 °F	Optimum cure is 30 min. @ 200°F
	149 °C	300 °F	Fast cure is 5 min. @ 300°F
Pot Life	<= 60.0 min @Temperature 25.0 °C	<= 60.0 min @Temperature 77.0 °F	100 g

Descriptive Properties
Color	White
Mix Ratio	3/1		By Weight

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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PARM06 / 24538

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