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Description for Henkel Armstrong A-31
A two-part, room temperature curing, epoxy resin formulation for general purpose applications, thixotropic with a creamy or buttery consistency.Brand Armstrong, Loctite Chemical Resistance 10% NaCl, Chemical Resistance: Glacial acetic acid, Acetone, Distilled H20, Ethylacetate, Ethylene dichloride, Toluene, Hexane, NH4 OH Application Type Bond, Seal 1 Part or 2 Part 2-Part Material Form Paste Substrate All metals, Olefin plastics, Dissimilar adherents, Hard plastics, Dissimilar materials, Treated Teflon Industry General purpose applications Manufacturer Henkel Chemistry Epoxy resin Cure Method 2-Part Cure, Room temperature curing Cure Temperature (°C) 20 to 25 Room temperature, 24, 74 Cure Time (min) 960 to 1,200, 120 Viscosity (cPs) Creamy, Buttery Color Neutral High Temperature Resistance (°C) Quite resistant to thermal changes -
Technical Data for Henkel Armstrong A-31
Overview
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Chemical Resistance
- Chemical Resistance - 10% NaCl, Acetone, Distilled H20, Ethylacetate, Ethylene dichloride, Hexane, NH4 OH, Toluene
- Chemical Resistance : Acid Resistance - Glacial acetic acid
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1 Part or 2 Part
- 2-Part
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Material Form
- Paste
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Industry
- General Purpose - General purpose applications
- Other - Vacuum devices, Outdoor applications, Outdoor applications
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Chemistry
- Epoxy - Epoxy resin
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Cure Method
- Room Temperature / Air Dry - Room temperature curing
- 2-Part Cure
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Color
- Other - Neutral
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Brand
- Armstrong
- Loctite
Specifications
Cure Specs
Cure Temperature (°C) 20 to 25 Room temperature, 24, 74 Cure Time (min) 960 to 1,200, 120 Viscosity (cPs) Creamy, Buttery Work / Pot Time (min) 40 to 50 Test Method Thixotropic Thixotropic Mix Ratio 3:2 (by weight), 2:1 (by volume) Bond Strength
General Bond Strength (psi) 1,980, 2,000 Test Method Shear Strength (psi) 2,350, 2,450, 1,590, 2,160, 2,360, 1,980, 2,280, 2,120, 2,290, 2,150, 2,490, 2,370, 2,530, 2,460, 2,800, 2,350, 2,430, 2,470, 2,260, 2,460, 2,290, 2,330, 2,250, 2,490, 2,340, 2,620 Test Method Cleavage Strength (psi) 1,490, 1,720 Test Method Tensile Strength (psi) 5,350, 3,960 Test Method Material Resistance
Environmental Resistance Environmental resistance High Temperature Resistance (°C) Quite resistant to thermal changes Moisture/Humidity Resistance Moisture/humidity resistance Hardness
Elongation (%) 2, 2 Test Method Other Properties
Outgassing Low Coefficient of Thermal Expansion (CTE) 3.8e-5 (in./ in/°C), 3.7e-5 (in./ in/°C) Test Method Business Information
Shelf Life Details Store below 25°C out of sunlight and in original unopened containers. Refer to packaging specific quote for shelf life information. Shelf Life Temperature (°F) <77 -
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Best Practices for Henkel Armstrong A-31
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Application
Easy to work and apply
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Mixing
Mix three parts A-31 Part A with two part A-31 part B by weight, or two parts Part A with one part B by volume.
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Curing
At room temperature 70% to 80% of the ultimate strength is attained within 16 to 20 hours (75°F). For faster cure, subject glue line to temperature of 165°F for two hours. Maximum chemical, moisture and heat resistance properties are obtained with a heat cure.
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Comparable Materials for Henkel Armstrong A-31
Spec Engine® Results
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Work / Pot Time Test Methods
Work / Pot Time | Test Method | Temperature |
---|---|---|
40 to 50 min | Pot Life: A mixture of 100 grams will have a usable pot life of 40 to 50 minutes at 75°F. | 24°C |
Shear Strength Test Methods
Shear Strength | Type | Cure Time | Cure Temperature | Cure Humidity | Chemical | Test Time | Test Temperature | Test Method |
---|---|---|---|---|---|---|---|---|
2,350 psi | Tensile Shear Strength | 20 to 25°C Room Temp | 24°C Room Temperature | |||||
2,450 psi | Tensile Shear Strength | 20 to 25°C Room Temp | -51°C | |||||
1,590 psi | Tensile Shear Strength | 20 to 25°C Room Temp | 82°C | |||||
2,160 psi | Tensile Shear Strength | 20 to 25°C Room Temp | NH4 OH | 604,800 sec | After Soaking | |||
2,360 psi | Tensile Shear Strength | 20 to 25°C Room Temp | Distilled H2O | 604,800 sec | After Soaking | |||
1,980 psi | Tensile Shear Strength | 20 to 25°C Room Temp | Glacial Acetic acid | 604,800 sec | After Soaking | |||
2,280 psi | Tensile Shear Strength | 20 to 25°C Room Temp | 10% NaCI | 604,800 sec | After Soaking | |||
2,120 psi | Tensile Shear Strength | 20 to 25°C Room Temp | Acetone | 604,800 sec | After Soaking | |||
2,290 psi | Tensile Shear Strength | 20 to 25°C Room Temp | Ethylene dichloride | 604,800 sec | After Soaking | |||
2,150 psi | Tensile Shear Strength | 20 to 25°C Room Temp | Toluene | 604,800 sec | After Soaking | |||
2,490 psi | Tensile Shear Strength | 20 to 25°C Room Temp | Ethylacetate | 604,800 sec | After Soaking | |||
2,370 psi | Tensile Shear Strength | 20 to 25°C Room Temp | Hexane | 604,800 sec | After Soaking | |||
2,530 psi | Tensile Shear Strength | 20 to 25°C Room Temp | 100 % | 604,800 sec | After Soaking | |||
2,460 psi | Tensile Shear Strength | 120 min | 74°C | 24°C Room Temperature | ||||
2,800 psi | Tensile Shear Strength | 120 min | 74°C | -51°C | ||||
2,350 psi | Tensile Shear Strength | 120 min | 74°C | 82°C | ||||
2,430 psi | Tensile Shear Strength | 120 min | 74°C | NH4 OH | 604,800 sec | After Soaking | ||
2,470 psi | Tensile Shear Strength | 120 min | 74°C | Distilled H2O | 604,800 sec | After Soaking | ||
2,260 psi | Tensile Shear Strength | 120 min | 74°C | Glacial Acetic acid | 604,800 sec | After Soaking | ||
2,460 psi | Tensile Shear Strength | 120 min | 74°C | 10% NaCI | 604,800 sec | After Soaking | ||
2,290 psi | Tensile Shear Strength | 120 min | 74°C | Acetone | 604,800 sec | After Soaking | ||
2,330 psi | Tensile Shear Strength | 120 min | 74°C | Ethylene dichloride | 604,800 sec | After Soaking | ||
2,250 psi | Tensile Shear Strength | 120 min | 74°C | Toluene | 604,800 sec | After Soaking | ||
2,490 psi | Tensile Shear Strength | 120 min | 74°C | Ethylacetate | 604,800 sec | After Soaking | ||
2,340 psi | Tensile Shear Strength | 120 min | 74°C | Hexane | 604,800 sec | After Soaking | ||
2,620 psi | Tensile Shear Strength | 120 min | 74°C | 100 % | 604,800 sec | After Soaking |
Tensile Strength Test Methods
Tensile Strength | Cure Time | Cure Temperature |
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5,350 psi | 20 to 25°C Room Temp | |
3,960 psi | 120 min | 74°C |
Cleavage Strength Test Methods
Cleavage Strength | Cure Time | Cure Temperature |
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1,490 psi | 20 to 25°C Room Temp | |
1,720 psi | 120 min | 74°C |
General Bond Strength Test Methods
General Bond Strength | Cure Time | Cure Temperature |
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1,980 psi | 20 to 25°C Room Temp | |
2,000 psi | 120 min | 74°C |
Elongation Test Methods
Elongation | Test Method |
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2 % | Room Temp Cure |
2 % | Cured 2 Hrs @ 165°F |
Coefficient of Thermal Expansion (CTE) Test Methods
Coefficient of Thermal Expansion (CTE) | CTE Test Method |
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3.8e-5 (in./ in/°C) | Room Temp Cure |
3.7e-5 (in./ in/°C) | Cured 2 Hrs @ 165°F |