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LOCTITE AA 326 High Strength Structural Adhesive for Magnet and Metal Bonding
LOCTITE AA 326 High Strength Structural Adhesive for Magnet and Metal Bonding
LOCTITE AA 326 High Strength Structural Adhesive is a fast-curing, general-purpose acrylic bonding solution developed for demanding metal-to-metal assembly and magnet bonding applications. Its high-viscosity, thixotropic consistency helps the adhesive remain in place after dispensing, supporting accurate application on vertical, curved, or difficult-to-reach surfaces. The one-component adhesive does not require resin and hardener mixing, but it is designed for a two-step process using LOCTITE SF 7649 activator to achieve rapid and reliable curing.
With a typical fixture time of less than three minutes, LOCTITE AA 326 High Strength Structural Adhesive helps manufacturers shorten assembly cycles while maintaining strong structural performance. The adhesive is particularly suitable for bonding ferrite magnets to plated metal parts in electric motors, including motors used in elevators and other industrial equipment. It can also be considered for speaker components, metal hardware, jewelry assemblies, and other closely fitted parts that require fast positioning and high shear strength.
Key Benefits of LOCTITE AA 326 High Strength Structural Adhesive
One of the main advantages of LOCTITE AA 326 High Strength Structural Adhesive is its combination of speed, strength, and convenient handling. Henkel lists a typical shear strength of approximately 15 N/mm² and temperature resistance up to 120°C. The uncured material is transparent yellow to light amber and has a high viscosity that helps reduce dripping, running, and uncontrolled movement during application.
The no-mix format can simplify production compared with conventional two-part structural adhesives. Activator is applied to one bonding surface, while the adhesive is applied to the other. Once the components are assembled, the confined adhesive cures rapidly and develops a durable bond. This process can reduce measuring and mixing errors, improve operator consistency, and support repeatable production on automated or manual assembly lines.
Applications for LOCTITE AA 326 High Strength Structural Adhesive
LOCTITE AA 326 High Strength Structural Adhesive is recommended for close-fitting metal assemblies, ferrite magnets, plated electric motor components, speaker parts, and selected decorative or precision hardware. Its strong metal-bonding capability makes it valuable for electric motor manufacturing, appliance assembly, automotive component production, industrial maintenance, and electromechanical equipment.
The adhesive performs best on properly prepared, compatible surfaces. Because the product is not generally recommended for thermoplastics, especially materials that may be vulnerable to stress cracking, compatibility testing is essential before use on plastics, coated parts, or unfamiliar substrates. Bond performance should also be verified under the actual operating temperature, load, vibration, chemical exposure, and environmental conditions of the finished assembly.
How to Apply LOCTITE AA 326 High Strength Structural Adhesive
For best results, remove oil, grease, dust, moisture, oxidation, and other contamination from both surfaces. Apply LOCTITE SF 7649 activator to one surface and allow it to follow the current manufacturer instructions. Apply the adhesive to the opposite surface, then assemble the parts within the recommended working period.
A bond gap of approximately 0.1 mm is recommended for typical applications. For larger gaps, up to the stated maximum of 0.5 mm, or when faster curing is required, activator may need to be applied to both surfaces. In this case, the components should be assembled promptly. Keep the parts fixed until handling strength is achieved, and avoid applying service loads until the adhesive has developed sufficient final strength. Depending on the substrates and bond gap, full cure may typically require 24 to 72 hours.
Storage and Safety of LOCTITE AA 326 High Strength Structural Adhesive
Store LOCTITE AA 326 High Strength Structural Adhesive in its unopened original container in a cool, dry place. Henkel identifies 8°C to 21°C as the preferred storage range and warns that storage below 8°C or above 28°C may negatively affect product properties. Do not return dispensed adhesive to the original container, as contamination can affect performance.
For manufacturers seeking a fast, high-strength solution for magnet and metal assembly, LOCTITE AA 326 High Strength Structural Adhesive offers practical no-mix processing, rapid fixture, and reliable structural bonding. Explore our industrial structural adhesives for additional solutions for motors, speakers, machinery, appliances, and precision component assembly.
