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3M™ Scotch-Weld™ Epoxy Adhesive 2216 Translucent

Brands: Scotch-Weld™

Package Sizes:

  • 60 mL 
  • 950 mL 
  • 1-Gallon Kit
  • 5-Gallon Pail

Shelf Life: 24 months

Product Description

3M™ Scotch-Weld™ Epoxy Adhesive 2216 B/A Translucent is a flexible, two-part, room temperature curing epoxy with high peel and shear strength. It is designed for bonding metals, woods, plastics, rubbers, and masonry products. This adhesive has excellent resistance to extreme shock, vibration, and flexing and is suitable for cryogenic bonding applications.


Product Features

  • Flexible epoxy adhesive with high peel and shear strength
  • Excellent for bonding metals, woods, plastics, rubbers, and masonry
  • Good retention of strength after environmental aging
  • Resistant to extreme shock, vibration, and flexing
  • Excellent for cryogenic bonding applications
  • Can be injected or applied by flow equipment
  • Tan NS version is non-sag for greater bond-line control
  • Meets DOD-A-82720 and UL 94 HB standards

Recommended Applications

  • Bonding metals, plastics, wood, and rubbers
  • Cryogenic applications
  • Potting parts subject to thermal cycling
  • Structural bonding in aerospace, transportation, and general industrial use

Typical Uncured Physical Properties

Attribute Value
Mix Ratio by Weight (B:A) 1:1
Mix Ratio by Volume (B:A) 1:1
Base Color Translucent
Accelerator Color Amber
Base Resin Modified Epoxy
Accelerator Resin Modified Amine
Base Net Weight 9.4 — 9.8 lb/gal
Accelerator Net Weight 8.0 — 8.5 lb/gal
Base Viscosity (23°C / 73°F) 11,000-15,000 cP¹
Accelerator Viscosity (23°C / 73°F) 5,000-9,000 cP¹

¹ Measured with Brookfield RVF #7 spindle at 20 rpm​.


Typical Mixed Physical Properties

Attribute Temperature Value
Open Time 120 min¹
Work Life (100g mixed) 23°C (73°F) 120 min
Time to Handling Strength 23°C (73°F) 12 — 16 h
Time to Full Cure 23°C (73°F) 30 days
Time to Full Cure 66°C (150°F) 240 min
Time to Full Cure 93°C (200°F) 60 min

¹ Maximum time allowed after applying adhesive before bond must be closed​.


Typical Cured Characteristics

Attribute Test Method Temperature Value
Shear Modulus (Etched Aluminum) ASTM D1002, ISO 4587 -100°C (-148°F) 2745 MPa (398,000 psi)
Shear Modulus (Etched Aluminum) ASTM D1002, ISO 4587 -60°C (-76°F) 2199 MPa (318,855 psi)
Shear Modulus (Etched Aluminum) ASTM D1002, ISO 4587 -40°C (-40°F) 1947 MPa (282,315 psi)
Shear Modulus (Etched Aluminum) ASTM D1002, ISO 4587 23°C (73°F) 342 MPa (49,580 psi)
Shore D Hardness ASTM D2240 23°C (73°F) 42

Typical Performance Characteristics

Attribute Test Method Temperature Value
T-Peel Adhesion ASTM D1876 23°C (73°F) 25 lb/in

Electrical and Thermal Properties

Attribute Test Condition Value
Coefficient of Thermal Expansion -50 ~ 0°C 81 x 10⁻⁶ m/m/°C
Coefficient of Thermal Expansion 60 ~ 150°C 207 x 10⁻⁶ m/m/°C
Thermal Conductivity 0.114 (btu-ft)/(h-ft²-°F)
Dielectric Constant ASTM D150, 1 KHz 6.3
Dissipation Factor ASTM D150, 1 KHz 0.119
Volume Resistivity ASTM D257 3.0 x 10¹² Ω-cm

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