Two-Part Epoxy Adhesives

Durability for demanding environments.

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Attributes of Two-Part Epoxies

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Back to Structural Adhesives

Formulated to meet specific performance criteria

Two-part epoxy adhesives range in performance from rigid to flexible, including some toughened formulations designed for fatigue resistance. Like one-part epoxy adhesives, they are resistant to extremes of heat, cold, humidity, many solvents and other conditions. Different formulations of two-part epoxies deliver different performance for your applications:
- Rigid epoxies have higher tensile strength at lower elongations for greater long-term holding power.
- Flexible epoxies have lower tensile strength at higher elongations for greater capability to withstand differential movement of bonded parts. They also have higher peel strength and higher adhesion to most engineered plastics.
- Toughened epoxies have higher tensile strength at lower elongations for fatigue resistance and are best suited for dynamic stresses. They have long-term holding power, high peel strength and exceptionally high resistance against shock, vibration and impact loads.

Discover the Important Attributes of Two-Part Epoxy Adhesives

Resources and Products of Two-Part Epoxy Adhesives

3M Structural Two-Part Epoxy Adhesive Performance vs. Mechanical Fasteners (PDF, 584 KB)

This paper discusses some of the advantages of adhesives and reasons industrial assembly businesses are looking to them as a replacement for some or all mechanical fasteners. In addition to describing the main types of structural adhesives it provides a brief history of epoxy adhesives and discusses adhesive selection, joint configuration, surface preparation and processing considerations as well as joint testing and common failure modes.
Explore Two-Part Epoxy Adhesive Products

3M offers rigid, flexible and toughened two-part epoxies to meet the different extremes customers need to overcome. Explore more options to find one that suits your needs.

Find structural adhesives resources including tech data sheets, whitepapers, webinars, product guides, bulletins.

3M™ Scotch-Weld™ Epoxy Adhesive: Strong, impact-resistant, durable bonds

Find written and video responses to structural adhesives FAQs.

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