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3M™ Scotch-Weld™ Epoxy Adhesive 2214 Hi-Dense, Gray, Paste Consistency Epoxy Adhesive

Brand: 3M™ Scotch-Weld™
Product Number: 2214 Hi-Dense
Technologies: Epoxy
Color: Gray
Cure Type: Heat Cure
Package Sizes: 6 fl oz
Shelf Life: 12 months

Product Description

3M™ Scotch-Weld™ Epoxy Adhesive 2214 Hi-Dense is a paste consistency epoxy adhesive, one-part, 100% solids, heat-curing epoxy designed for structural bonding applications requiring a void-free, high-density bondline. This adhesive is a deaerated version of 3M™ Scotch-Weld™ Epoxy Adhesive 2214 Regular, ensuring exceptional adhesion without air pockets. It is specifically formulated for bonding metals and high-temperature plastics, such as fiberglass-reinforced plastic, polyester, and phenolics. Additionally, it is UL 94 HB rated, making it suitable for applications requiring flame resistance.


Key Features

  • High-Density, Void-Free Adhesion: Deaerated formulation for strong and uniform bondlines.
  • High-Temperature Resistance: Cures at 250°F (121°C) for durable structural bonds.
  • Paste Consistency: Allows precise application with controlled bondline thickness.
  • Non-Metallic Filled: Provides strong structural integrity without electrical conductivity.
  • UL 94 HB Rated: Recognized for flame resistance​.

Recommended Applications

  • Bonding high-temperature plastics and composites such as fiberglass-reinforced plastics, polyester, and phenolics.
  • Structural bonding of metals in aerospace, automotive, and industrial applications.
  • Applications requiring high-temperature strength and flame resistance.
  • Situations where a void-free, high-density bondline is critical​.

Typical Uncured Physical Properties

Attribute Name Value
Color Gray¹
Viscosity >1,000,000 cP²
Viscosity (Flow Rate) 60 – 200 s³
Net Weight 12.6 lb/gal
Base Modified Epoxy

¹ Colors may vary from nearly white to yellow/amber; performance is not affected.
² Due to its thixotropic paste nature, Brookfield viscosity is over 1,000,000 cP.
³ Time required to deliver 20 g at 345 kPa (50 psi) through a 2.5 mm (0.10 in) orifice.


Typical Mixed Physical Properties (Curing at 121°C / 250°F)

Attribute Name Value
Time to Full Cure 40 minutes

Typical Cured Characteristics

Attribute Name Value
Cured Color Gray
Modulus 750,000 lb/in²
Shore D Hardness (ASTM D2240) 85

Typical Performance Characteristics

Attribute Name Test Method Value
Overlap Shear Strength (Cold Rolled Steel, MEK/Abrade/MEK, 7 Days Dwell Time) ASTM D1002, ISO 4587 2,500 lb/in²¹
T-Peel Adhesion (Aluminum, 23°C / 73°F) ASTM D1876 5 lb/in width²
T-Peel Adhesion (Steel, MEK Wipe, 23°C / 73°F) ASTM D1876 50 lb/in width²
Elongation at Break <2%
Tensile Strength at Break 10,000 lb/in²

¹ 25 mm (1″) wide, 12.7 mm (1/2″) overlap samples, bondline thickness: 0.13-0.20 mm (5-8 mil).
² Measured using etched 2024-T3 clad aluminum panels, tested at 508 mm/min (20 in/min) separation rate.


Electrical and Thermal Properties

Attribute Name Test Condition Value
Coefficient of Thermal Expansion 0 ~ 80°C 49 x 10⁻⁶ m/m/°C
Thermal Conductivity 0.231 (btu-ft)/(h-ft²-°F)
Arc Resistance ASTM D495 76 seconds

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