Henkel Armstrong A-271

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Description for Henkel Armstrong A-271

An amber-colored clear two-part epoxy bonding adhesive, good adhesion to glass due to its wetting ability, good moisture and chemical resistance.

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Brand	Armstrong
Chemical Resistance	Good
Application Type	Bonding, Potting
1 Part or 2 Part	2 Part
Material Form	Liquid
Substrate	Al, Ceramics, Glass, Metal, Plastics, Wood
Manufacturer	Henkel
Chemistry	Epoxy
Cure Method	2-Part Cure
Cure Temperature (°C)	93, 148, 25, 25
Cure Time (min)	30, 5.00, 20,160, 1,440
Viscosity (cPs)	9,000, Non sag, Wetting
Color	Amber, Clear
High Temperature Resistance (°C)	<107, 150
Low Temperature Resistance (°C)	-40

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Cure Temperature Test Methods

Cure Temperature	Cure Time Test Method
93°C	Extrapolated from Henkel LDS
148°C	Extrapolated from Henkel LDS
25°C	Optimum, Extrapolated from Henkel LDS
25°C	Extrapolated from Henkel LDS

Cure Time Test Methods

Cure Time	Test Method
30 min	Extrapolated from Henkel LDS
5.00 min	Extrapolated from Henkel LDS
20,160 min	Optimum, Extrapolated from Henkel LDS
1,440 min	Extrapolated from Henkel LDS

Viscosity Test Methods

Viscosity	Test Method	Temperature
9,000 cPs	Mixed, @1/s, Rheometer parallel plate 25mm 455300006291	25°C
Non sag
Wetting

Work / Pot Time Test Methods

Work / Pot Time	Test Method	Temperature
90 min	100 g mass, Extrapolated from Henkel LDS	25°C
60 min	1 lb mass, Extrapolated from Henkel LDS	25°C
53 min	Pot Life, defined as the time it takes for initial mixed viscosity to double, Rheometer parallel plate 25mm@1/s 455300006291,	25°C

Cleavage Strength Test Methods

Cleavage Strength	Cure Time	Cure Temperature	Test Method
1,500 psi	30 min	93°C	Extrapolated from Henkel LDS

General Bond Strength Test Methods

General Bond Strength	Cure Time	Cure Temperature	Test Method
2,500 psi	30 min	93°C	Extrapolated from Henkel LDS
Good

Tensile Strength Test Methods

Tensile Strength	Cure Time	Cure Temperature	Test Method
8,700 psi	30 min	93°C	Extrapolated from Henkel LDS

Shear Strength Test Methods

Shear Strength	Cure Time	Cure Temperature	Substrate	Test Temperature
2,000 psi	30 min	93°C	Al to Al	-51°C
2,800 psi	30 min	93°C	Al to Al	25°C
2,500 psi	30 min	93°C	Al to Al	82°C

High Temperature Resistance Test Methods

High Temperature Resistance	Test Method
<107°C	Intermediate “in service” temperatures
150°C	Operating Temperature, Operating Temperature Range is based on average design requirements and is not intended as a guarantee of suitability for all applications operating at that temperature.

Low Temperature Resistance Test Methods

Low Temperature Resistance	Test Method
-40°C	Operating Temperature, Operating Temperature Range is based on average design requirements and is not intended as a guarantee of suitability for all applications operating at that temperature.

Coefficient of Thermal Expansion (CTE) Test Methods

Coefficient of Thermal Expansion (CTE)	CTE Temperature (°C)	CTE Test Method
49 (ppm/ °C)	25°C	Below Tg, Extrapolated from Henkel LDS

Specific Gravity Test Methods

Specific Gravity	Temperature	Test Method
1.100	25°C	Mixed, calculated, Measured WPG cup

Henkel Armstrong A-271

Description for Henkel Armstrong A-271