Henkel Armstrong A-12 Epoxy Resin 3:2

Henkel Armstrong A-12 Epoxy Resin 3:2 Datasheet
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  • Description for Henkel Armstrong A-12 Epoxy Resin 3:2

    A general purpose adhesive, combines low toxicity with good physical properties. This two-part adhesive has a non-critical mixing ratio with 1:1 used most frequently. The mix ratio can be varied to obtain a more flexible or more rigid bond by increasing or decreasing respectively, the concentration of Part B.

    *See Terms of Use Below

    Brand Armstrong, Loctite
    Application Type Bond
    1 Part or 2 Part 2 Part
    Material Form Liquid
    Substrate Ceramics, Metals, Plastics, Woods, Al
    Industry General purpose
    Manufacturer Henkel
    Chemistry Epoxy
    Cure Method 2-Part Cure
    Cure Temperature (°C) 93, 149, 25, 25
    Cure Time (min) 30, 5.00, 60, Overnight
    Viscosity (cPs) 80,000

  • Technical Data for Henkel Armstrong A-12 Epoxy Resin 3:2

    *See Terms of Use Below

    Overview
    • Application Type
    • 1 Part or 2 Part
      • 1 Part or 2 Part - 2 Part
    • Material Form
      • Liquid
    • Substrate
    • Industry
      • Industrial - Cryogenic applications
      • General Purpose
    • Chemistry
    • Cure Method
      • 2-Part Cure
    • Brand
      • Armstrong
      • Loctite
    Specifications
    Cure Specs
    Cure Temperature (°C) 93, 149, 25, 25 Test Method
    Cure Time (min) 30, 5.00, 60, Overnight Test Method
    Viscosity (cPs) 80,000 Test Method
    Work / Pot Time (min) 120, 60 Test Method
    Mix Ratio 3:2 (by volume), 3:2 (by weight)
    Bond Strength
    General Bond Strength (psi) 2,500 Test Method
    Cleavage Strength (psi) 1,600 Test Method
    Tensile Strength (psi) 4,200, 2,000, 2,500, 2,500 Test Method
    Hardness
    Elongation (%) <6 Test Method
    Flexibility Flexible, Rigid
    Other Properties
    Specific Gravity 1.310 Test Method
    Coefficient of Thermal Expansion (CTE) 3.5e-5 (in./ in/°F) Test Method
    Business Information
    Shelf Life Details Shelf life is one year when stored below 90°F out of sunlight and in original unopened containers of pints or greater. Shelf life will vary with specialty packages.
    Shelf Life Temperature (°F) <90
    Shelf Life (mon) 12

  • Best Practices for Henkel Armstrong A-12 Epoxy Resin 3:2

    *See Terms of Use Below

    1. Surface Preparation

      The surfaces to be bonded should be clean and dry (for critical applications refer to our suggested surface preparation procedures - Bulletin No. 964)

    2. Application

      Apply the adhesive to surfaces to be bonded (preferably both surfaces) and press together. Light clamping may be used to keep parts in position during curing.

    3. Mixing

      Thoroughly mix the A-12 Part B with the A-12 part A in a clean discardable container using correct mix ratio. Avoid the introduction of excess air.

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Cure Temperature Test Methods
Cure Temperature Cure Time Test Method
93°C Optimum cure,Elevated Temperature
149°C Fast cure, Elevated Temperature
25°C Optimum cure, Room Temperature
25°C Fast cure, Room Temperature
Cure Time Test Methods
Cure Time Test Method
30 min Optimum cure,Elevated Temperature
5.00 min Fast cure, Elevated Temperature
60 min Optimum cure, Room Temperature
Overnight Fast cure, Room Temperature
Viscosity Test Methods
Viscosity Test Method
80,000 cPs Mixed, uncured
Work / Pot Time Test Methods
Work / Pot Time Test Method Temperature
120 min 100 gms 25°C
60 min 1# 25°C
Tensile Strength Test Methods
Tensile Strength Cure Time Cure Temperature Substrate Test Temperature
4,200 psi 20 min 93°C Al./Al. 25°C
2,000 psi 20 min 93°C Al./Al. 82°C
2,500 psi 20 min 93°C Al./Al. -51°C
2,500 psi 20 min 93°C
Cleavage Strength Test Methods
Cleavage Strength Cure Time Cure Temperature Test Method
1,600 psi 20 min 93°C Cured
General Bond Strength Test Methods
General Bond Strength Cure Time Cure Temperature Test Method
2,500 psi 20 min 93°C Cured
Elongation Test Methods
Elongation Test Method
<6 % Maximum, Cured
Coefficient of Thermal Expansion (CTE) Test Methods
Coefficient of Thermal Expansion (CTE) CTE Test Method
3.5e-5 (in./ in/°F) Cured
Specific Gravity Test Methods
Specific Gravity Temperature Test Method
1.310 25°C Cured