3M Scotch-Weld DP8405NS Acrylic Structural Adhesive for Metal and Plastic Bonding
3M Scotch-Weld DP8405NS Acrylic Structural Adhesive for Metal and Plastic Bonding
  1. 3M Scotch-Weld DP8405NS Acrylic Structural Adhesive for Metal and Plastic Bonding
  2. 3M Scotch-Weld DP8405NS Acrylic Structural Adhesive for Metal and Plastic Bonding

3M Scotch-Weld DP8405NS Acrylic Structural Adhesive for Metal and Plastic Bonding

3M Scotch-Weld DP8405NS high-performance acrylic adhesive, a two-component fast-curing AB acrylic adhesive, provides high shear and peel performance. The high-strength structural adhesive can bond various metals and plastics, and can be directly bonded to oily surfaces.

 

Fast curing, it can reach structural strength in a very short time.

 

Bonding material types: glass, electronic components, leather, plastics, rubber, stone, metals, wood, cement products, ceramics.
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3M Scotch-Weld DP8405NS Acrylic Adhesive is a fast-curing, two-part structural adhesive engineered for high-strength bonding of metals, plastics, composites, painted surfaces, and selected slightly oily substrates. Its toughened acrylic formulation delivers excellent shear, peel, and impact resistance while supporting rapid production cycles. The green, non-sag adhesive remains accurately positioned after dispensing, making it suitable for vertical joints, overhead assemblies, panel bonding, component attachment, and other industrial applications where controlled placement and dependable structural performance are required.

3M Scotch-Weld DP8405NS Acrylic Adhesive
Fast-curing structural acrylic adhesive for bonding metals, plastics, composites, painted surfaces, and industrial components.

3M Scotch-Weld DP8405NS Acrylic Adhesive Performance

This industrial adhesive uses a 10:1 mix ratio by volume and contains integrated spacer beads that help maintain a controlled bond-line thickness of approximately 0.25 mm. The mixed material has a typical viscosity of around 60,000 cP, providing a stable non-sag consistency that supports accurate dispensing without uncontrolled running or migration.

At approximately 23°C, 3M Scotch-Weld DP8405NS Acrylic Adhesive provides a working life of about four to six minutes and reaches handling strength in approximately 14 to 16 minutes. Structural strength of around 6.9 MPa can develop in approximately 18 to 20 minutes, while full curing typically requires 24 hours. These rapid strength-building characteristics help manufacturers reduce clamping time, increase production throughput, and move bonded assemblies through subsequent processes more efficiently.

Industrial Metal, Plastic, and Composite Bonding Applications

Typical applications include HVAC manufacturing, appliance assembly, sporting goods, specialty vehicles, sign production, electrical equipment, industrial enclosures, transportation components, and general metalworking. The adhesive can be used for panel-to-frame bonding, trim attachment, letter installation, stiffener bonding, housing assembly, bracket attachment, and joining plastics or composites to metal structures.

3M Scotch-Weld DP8405NS Acrylic Adhesive provides strong adhesion to aluminum, stainless steel, PVC, ABS, acrylic, polycarbonate, fiber-reinforced epoxy, and many painted or coated metals. It also offers improved tolerance for light oil residue compared with many conventional structural adhesives, potentially reducing surface-preparation requirements in validated applications.

8 Key Benefits of 3M Scotch-Weld DP8405NS Acrylic Adhesive

  • Fast strength development: Reaches structural strength in approximately 20 minutes.
  • High structural performance: Provides excellent shear, peel, and impact resistance.
  • Non-sag consistency: Maintains controlled placement on vertical and overhead joints.
  • Broad substrate compatibility: Bonds many metals, plastics, composites, and coated surfaces.
  • Oil tolerance: Bonds selected slightly oily metal surfaces after process validation.
  • Controlled bond line: Integrated glass beads help maintain consistent adhesive thickness.
  • Simple dispensing: The 10:1 cartridge system supports accurate metering and mixing.
  • Room-temperature storage: Offers an 18-month shelf life under recommended conditions.

Application and Surface Preparation Guidance

For maximum bond strength, remove loose dirt, dust, heavy oil, corrosion, oxide films, paint defects, and release agents. Painted or coated metals may be cleaned with pure isopropyl alcohol and lightly abraded where additional strength is required. Avoid completely removing protective coatings from corrosion-sensitive steel unless the complete bonding process has been evaluated.

Install the correct 3M static mixing nozzle, dispense a small initial quantity to confirm uniform green color, and then apply the adhesive to one prepared surface. Join the parts within the available open time and maintain alignment until handling strength develops. Heat may be used to accelerate curing when validated for the substrates and assembly.

Low-surface-energy plastics such as polypropylene, polyethylene, TPO, and PTFE generally provide limited adhesion and require a different adhesive technology. Applications involving bare copper, brass, bronze, or cold-rolled steel should also be tested carefully because environmental ageing may promote corrosion at the bond interface.

Official Resources and Related Structural Adhesives

Review the official 3M DP8405NS product page and the official 3M DP8405NS technical data sheet for current application instructions, performance values, storage guidance, and safety documentation.

Explore our structural acrylic adhesives for additional fast-curing metal and plastic bonding products. You can also browse our industrial structural adhesives for acrylic, epoxy, polyurethane, and specialty assembly solutions. Contact our sales team for quotations, cartridge availability, compatible applicators, mixing nozzles, bulk purchasing, and export documentation.

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