Applications

LOCTITE EA 3425 Epoxy Adhesive

  • Item Name: LOCTITE® EA 3425 (Hysol 3425)
  • Manufacturer: Henkel
  • Product Category: Epoxy Adhesive
  • Technologies: Two-part, thixotropic epoxy adhesive
  • Applications: Bonding metals, ceramics, rigid plastics, and wood
  • Color: Yellow/white (mixed), Light beige (resin & hardener)
  • Cure Type: Room temperature cure after mixing
  • Package Size: Contact Avantek for details
  • Shelf Life: Contact Avantek for details

1. Product Overview

LOCTITE® EA 3425 is a two-component, thixotropic epoxy adhesive that cures at room temperature. It is designed for bonding metals, ceramics, rigid plastics, and wood. This adhesive provides high strength and non-sag properties, making it ideal for vertical surfaces and filling gaps up to 3 mm.

2. Applications

  • General-purpose bonding
  • Structural bonding of metals, ceramics, rigid plastics, and wood
  • Suitable for rough and vertical surfaces

3. Typical Properties

Uncured Material

Property Resin Hardener
Appearance Light beige paste Light beige paste
Specific Gravity (@25°C) 1.34 – 1.4 1.37 – 1.45
Viscosity (Brookfield RVT, 25°C, mPa·s) 1,500,000 – 3,500,000 100,000 – 300,000
Mix Ratio (by weight) 100:100
Pot Life (@25°C, 200g mass) 55 – 105 minutes

Cured Properties (After 7 days at 22°C)

Property Value
Shore Hardness (Durometer D) 70 – 80
Glass Transition Temperature (Tg) 63°C
Elongation 3%
Tensile Strength 27 N/mm² (3,900 psi)
Tensile Modulus 1,350 N/mm² (200,000 psi)
Compressive Strength 65 N/mm² (9,400 psi)
Coefficient of Thermal Conductivity 0.28 W/(m-K)

Adhesive Performance (Lap Shear Strength @22°C)

Substrate Strength (N/mm²)
Steel (grit blasted) 25 – 30
Stainless Steel 10 – 12.5
Aluminum (abraded) 7 – 13
Aluminum (etched) 18 – 22
Galvanized Steel 11 – 16
Zinc Dichromate 12 – 15
Brass 9 – 15
Hardwood (Mahogany) 8 – 14
Softwood (Red Deal) 8 – 10

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