Metal Bonding

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Using adhesives for metal bonding offers many advantages over mechanical fasteners or welding. Adhesives are faster, lighter, and more cost-effective than traditional methods and are easy to apply and automate.

LOCTITE metal bonding adhesives can be used on a wide variety of metals including aluminum, anodized aluminum, copper, nickel, steel, stainless steel, zinc dichromated steel, and galvanized steel.

Metal bonding adhesives provide tough, durable bonds that are as strong as overlap welds, two times stronger than bolts, and are easier on the bottom line.

Benefits of adhesive bonding vs. bolts or welding:

  • Distribute stress evenly – Welding and riveting result in localized stress peaks; bonding achieves uniform stress distribution
  • Improve appearance – no unsightly bolt heads or weld seams
  • Reduce weight
  • Join dissimilar materials
  • Seal joints and protect against corrosion
  • Simplify designs
  • Reduce assembly time
  • Fill large gaps between parts
  • Use lower-cost materials

Distribution of stresses for bolts, welds and adhesives:

Types of Metal Bonding Adhesives

Henkel’s technical experts can help you select the right adhesive for your metal bonding application.  Considerations include your assembly process, the performance characteristics of various types of adhesives, and the joint design of the parts being bonded.

Structural Adhesive Technologies - Bonding Solutions

Epoxies Acrylics Polyurethane
  • Rigid bonding
  • 1- or 2-component solution
  • Excellent gap filling
  • Very high strength
  • For small to medium surfaces
  • Outstanding chemical resistance
  • Rigid to slightly flexible bonding
  • 2-component solution
  • Very high strength
  • For small surfaces
  • Good chemical resistance
  • Slightly flexible bonding
  • 1- or 2-component solution
  • Excellent gap filling (2C)
  • High strength
  • For medium to large surfaces
  • Good chemical resistance
Silane Modified Polymers Silicones
  • Flexible bonding
  • 1- or 2-component solution
  • Wide primerless adhesion on many substrates
  • High impact strength
  • Good UV and weather resistance
  • Flexible bonding
  • 1- or 2-component solution
  • Outstanding temperature and UV resistance
  • Excellent chemical resistance


When designing adhesive joints, engineers need to consider the type of joint and type of stresses on the joint.

Design considerations for metal bonding

Bonding Metals with Adhesives

Our Design Guide for Bonding Metals offers detailed information on design considerations as well as technical data on our adhesives.


Henkel can provide technical support and assistance to help you design adhesive joints and select the right adhesive.

Contact your Henkel representative to learn more about Bonding Solutions

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