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  4. Structural Adhesives
Bonding and Assembly
  • 3M™ Scotch-Weld™ Structural Adhesive

    Bond dissimilar materials with limited bond line read-through.

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  • Looking for a Structural Adhesive?

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3M™ Scotch-Weld™ Structural Adhesives

  • Obviously structural adhesives need to be strong – but that’s just the beginning. Depending on your specific process and needs you might be looking for shorter or longer open times, low-odor formulations, better environmental exposure performance, sealing properties, flexibility, adherence to specific substrates or any number of other features. At 3M, we know structural adhesives and the many ways they hold the world together, and our adhesives experts are always looking out for the next requirement to meet.

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Chemistries

Each adhesive is unique, but adhesive families tend to share certain characteristics for which they perform well. These are the key characteristics described in the chemistry families below – click the hotspots for a general description, then explore each chemistry to learn more.

  • Image of a small portion of the chemistry makeup of Acrylic based on benefits
    Acrylic Adhesives

    These two-part adhesives offer great strength and design flexibility.

  • Image of a small portion of the chemistry makeup of Epoxy based on benefits
    Epoxy Adhesives

    These adhesives provide excellent durability and resistance to environmental extremes.

    One-Part Epoxy

    Two-Part Epoxy

  • Image of a small portion of the chemistry makeup of PUR based on benefits
    PUR Adhesives

    These one-part products combine the speed of hot melt adhesives with the structural benefits of moisture-curing chemistries.

  • Image of a small portion of the chemistry makeup of Urethane based on benefits
    Urethane Adhesives

    These formulations are ideal for creating strong, flexible bonds between dissimilar materials.

  • Image of a small portion of the chemistry makeup of Anaerobic based on benefits
    Anaerobic Adhesives

    These products provide tight fits and seals in threadlocking, pipe sealing and related applications.

  • Image of a small portion of the chemistry makeup of Instant Adhesives based on benefits
    Instant Adhesives

    These products reach handling strength in 5-10 seconds and achieve extremely high tensile strengths.

  • Icons of the Nine Core Benefits of 3M Structural Adhesives

    Core benefits of Structural Adhesives

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Material Bonding

Structural adhesives bond dissimilar materials and also provide insulation to resist corrosion when bonding two different metals

Process Efficiency

Different chemistries provide a variety of surface preparation, open time and strength-build times so you can find the best options for your process

Impact Resistance

Depending on the chemistry, structural adhesive bonds provide the strength or flexibility to resist shock, vibration and impact loads

Lightweighting

Adhering to new materials and distributing stress along the entire bond area helps designers use thinner and lighter materials

Innovation in Design

Adhering to new materials and distributing stress along the entire bond area helps designers use thinner and lighter materials

Aesthetics

Structural adhesives provide better product appearance through invisible joints and smooth bond lines

Water Intrusion

Structural adhesives provide a continuous bond line to prevent the migration of fluids, dust and dirt

NVH

Different chemistries offer different advantages for reducing unwanted noise: stiff bonds can resist vibration while flexible bonds can absorb and disperse these energies

Strength

Each chemistry has advantages, but all structural adhesives offer the strength you need without the weight you don’t so you can reduce or eliminate mechanical fasteners

  • Image of shear test equipment behind title “Project IBIS: A Case for Structural Adhesives”

    Project IBIS

    Engineers need to see the data, and even some of our own engineers can be skeptical about the ability of structural adhesives to replace welding or mechanical fasteners. That’s why they designed a test to see for themselves. See what they learned.

  • More information

    Using 3M Structural Adhesives
    Find resources to help you learn more about choosing the right adhesive and prepping the surface, including white papers, videos and webinars.

    Frequently asked questions
    Different customers often bring up similar questions when they work with our adhesive experts. Here are some of the most common ones.

    Find Structural Adhesives tech data
    Search for information about a specific product, or enter the substrates and we’ll make some recommendations you can explore further.

    More about bonding and joining
    Our eLearning Academy can help you learn more about bonding and joining through educational series, courses, webinars, events and solutions seminars.

     

Markets

  • Appliances
    Appliances
      • Simplify operations by bonding after powdercoating
      • Eliminate the challenge of bonding rigid to flexible substrates
      • Noise damping
      • Reduce complexity-bond and seal glass to metal in one step

      Key Chemistries:
      Epoxy, Acrylic, PUR

    • Image of kitchen appliance

  • Aerospace
    Aerospace
  • Electronics
    Electronics
      • Low halogen formulations available to meet customer needs
      • Fast cure to speed production
      • Durable adhesive bonds protect sensitive electrical connections from the environment.
      • Battery bonding (Learn more: PDF, 3.49 MB)

      Key Chemistries:
      Epoxy, Acrylic, PUR

    • Person looking at phone

  • HVAC
    HVAC
      • Floor panel and drain pan to frame
      • Side wall panel attachment to frame
      • Stiffener to panel

      Key Chemistries:
      Acrylic

    • Image of HVAC attached to a wall

  • Metalworking
    Metalworking
      • High strength and durability
      • Reduced surfac preparation before bonding, and no grinding after bonding
      • Save weight and improve appearance with adhesives instead of welds or rivets

      Key Chemistries:
      Acrylic, Epoxy, Anaerobic

    • Image of metal bonding

  • Signage
    Signage
      • One adhesive to bond all of your substrates
      • Strong formulations and thin bond lines
      • Weather resistance
      • UL recognition

      Key Chemistries:
      Acrylic

    • 3M Global Headquarters sign

  • Specialty Vehicle
    Specialty Vehicle
  • Sporting Goods
    Sporting Goods
      • Excellent impact resistance of high stressed bonds
      • High strength for small joints
      • High strength bonding of rubber, composites and metals to each other

      Key Chemistries:
      Epoxy, Acrylic

    • Golf club striking golf ball

  • Transportation
    Transportation
      • Metal skin to metal frame
      • Composite cab assembly
      • Frame assembly
      • Floor panel bonding
      • Exterior panel bonding
      • Roof bonding
      • Battery bonding (Learn more: PDF, 3.49 MB)

      Key Chemistries:
      Acrylic

    • White car parked outside

We're here to help.

Need help finding the right product for your project? Contact us if you need product, technical or application advice or want to collaborate with a 3M technical specialist, or give us a call at 1-800-831-0658.

Need help finding the right product for your project? Contact us if you need product, technical or application advice or want to collaborate with a 3M technical specialist, or give us a call at 1-800-831-0658.

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