Henkel Armstrong A-31 Epoxy Resin

Henkel Armstrong A-31 Epoxy Resin Datasheet
  • Description for Henkel Armstrong A-31 Epoxy Resin

    A two-part, room temperature curing, epoxy resin formulation for general purpose applications. Features low out-gassing characteristics which makes it quite suitable for bonding of vacuum devices. Resistant to thermal changes for outdoor applications and for the bonding of dissimilar adherents.

    *See Terms of Use Below

    Brand Armstrong
    Application Type Bond, Seal
    1 Part or 2 Part 2 Part
    Material Form Paste
    Substrate Metal, Olefin Plastics, Dissimilar adherents, Plastics, Dissimilar materials, Teflon
    Manufacturer Henkel
    Chemistry Epoxy
    Cure Method Part A/Part B
    Cure Temperature (°C) 20 to 25, 24, 74
    Cure Time (min) 960 to 1,200, 120
    Color Neutral
    Chemical Resistance 10% NaCl, Acetone, Distilled H20, Ethylacetate, Ethylene dichloride, Glacial acetic acid, Hexane, NH4 OH, Toluene
  • Technical Data for Henkel Armstrong A-31 Epoxy Resin

    Overview
    • Application Type
    • 1 Part or 2 Part
      • 1 Part or 2 Part - 2 Part
      • Part A Name - Part A
      • Part B Name - Part B
    • Material Form
      • Paste
    • Substrate
      • Dissimilar Substrates - Dissimilar adherents, Dissimilar materials
      • Metal
      • Plastic - Olefin Plastics, Plastics, Teflon
    • Chemistry
    • Cure Method
      • 2-Part Cure - Part A/Part B
    • Color
      • Other - Neutral
    • Brand
      • Armstrong
    Specifications
    Cure Specs
    Cure Temperature (°C) 20 to 25, 24, 74
    Cure Time (min) 960 to 1,200, 120
    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
    Chemical Resistance 10% NaCl, Acetone, Distilled H20, Ethylacetate, Ethylene dichloride, Glacial acetic acid, Hexane, NH4 OH, Toluene
    Environmental Resistance Environmental resistance
    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
  • Best Practices for Henkel Armstrong A-31 Epoxy Resin

    *See Terms of Use Below

    1. 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.

    2. 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.

  • Comparable Materials for Henkel Armstrong A-31 Epoxy Resin

    *See Terms of Use Below

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Work / Pot Time Test Methods
Work / Pot Time Test Method Temperature
40 to 50 min 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
2,350 psi Tensile Shear Strength 20 to 25°C Room Temperature 25°C Room Temperature
2,450 psi Tensile Shear Strength 20 to 25°C Room Temperature -51°C
1,590 psi Tensile Shear Strength 20 to 25°C Room Temperature 82°C
2,160 psi Tensile Shear Strength 20 to 25°C Room Temperature NH4 OH 604,800 sec
2,360 psi Tensile Shear Strength 20 to 25°C Room Temperature Distilled H2O 604,800 sec
1,980 psi Tensile Shear Strength 20 to 25°C Room Temperature Glacial Acetic acid 604,800 sec
2,280 psi Tensile Shear Strength 20 to 25°C Room Temperature 10% NaCI 604,800 sec
2,120 psi Tensile Shear Strength 20 to 25°C Room Temperature Acetone 604,800 sec
2,290 psi Tensile Shear Strength 20 to 25°C Room Temperature Ethylene dichloride 604,800 sec
2,150 psi Tensile Shear Strength 20 to 25°C Room Temperature Toluene 604,800 sec
2,490 psi Tensile Shear Strength 20 to 25°C Room Temperature Ethylacetate 604,800 sec
2,370 psi Tensile Shear Strength 20 to 25°C Room Temperature Hexane 604,800 sec
2,530 psi Tensile Shear Strength 20 to 25°C Room Temperature 100 % 604,800 sec
2,460 psi Tensile Shear Strength 120 min 74°C 25°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
2,470 psi Tensile Shear Strength 120 min 74°C Distilled H2O 604,800 sec
2,260 psi Tensile Shear Strength 120 min 74°C Glacial Acetic acid 604,800 sec
2,460 psi Tensile Shear Strength 120 min 74°C 10% NaCI 604,800 sec
2,290 psi Tensile Shear Strength 120 min 74°C Acetone 604,800 sec
2,330 psi Tensile Shear Strength 120 min 74°C Ethylene dichloride 604,800 sec
2,250 psi Tensile Shear Strength 120 min 74°C Toluene 604,800 sec
2,490 psi Tensile Shear Strength 120 min 74°C Ethylacetate 604,800 sec
2,340 psi Tensile Shear Strength 120 min 74°C Hexane 604,800 sec
2,620 psi Tensile Shear Strength 120 min 74°C 100 % 604,800 sec
Tensile Strength Test Methods
Tensile Strength Cure Time Cure Temperature Chemical Test Time Test Temperature
5,350 psi 20 to 25°C Room Temperature
3,960 psi 120 min 74°C
Cleavage Strength Test Methods
Cleavage Strength Cure Time Cure Temperature
1,490 psi 20 to 25°C Room Temperature
1,720 psi 0.00 min 74°C
General Bond Strength Test Methods
General Bond Strength Cure Time Cure Temperature
1,980 psi 25°C
2,000 psi 120 min 74°C
Elongation Test Methods
Elongation Test Method
2 %
2 % 2 hrs @ 165°F
Coefficient of Thermal Expansion (CTE) Test Methods
Coefficient of Thermal Expansion (CTE) CTE Test Method
3.8e-5 (in./ in/°C)
3.7e-5 (in./ in/°C) 2 hrs @ 165°F