3M™ Scotch-Weld™ Epoxy Adhesive DP420 is a toughened, two-part epoxy structural adhesive that provides high impact and fatigue resistance to meet demanding bonding challenges. It works well on a variety of substrates, such as metals, ceramics, glass, many composites and plastics. This adhesive can replace mechanical fasteners, screws, rivets and spot welds in many applications. It can be used in joining, gluing, potting, panel bonding and structural bonding in sporting goods, metalworking, general industrial and transportation segments. The mix ratio is 2:1 and provides 20 minutes of work-life, allowing time to adjust for the desired fit prior to curing. This adhesive reaches handling strength in approximately two hours and is fully cured in 24 hours at 72 °F (22 °C). It maintains bond strength and can withstand paint bake operations up to 400 °F for 60 minutes. When using this, or other Duo-Pak (DP) size adhesives, rely on 3M Applicators for convenient and accurate metering, mixing and dispensing.
| Adhesive Type | Epoxy |
| Application | Impact Resistance, Bonding, Potting |
| Brands | Scotch-Weld™ |
| Container Size (Imperial) | 0.05 gal, 0.11 gal, 1 fl oz, 1.7 gal, 5 gal, 55 gal |
| Container Size (Metric) | 3.78 L, 18.93 L, 50 mL, 200 mL, 208.2 mL, 400 L |
| Features | Low Odor |
| Hardness | 75 - 80 Shore D |
| Industries | Construction, Consumer Goods, Electronics, General Industrial, Military & Government, Specialty Vehicle, Transportation, Metalworking, Signage, Woodworking, Plastic, Composite |
| Mix Ratio Volume Base:Accelerator | 2:1 |
| Open Time | 20 min @ 72 °F (22 °C) |
| Physical Form | Flowable Liquid |
| Product Form | Kit, Drum |
| Set Time | 2 hr |
| Shear Strength | 4500 psi |
| Smallest Saleable Unit | Kit, Drum, Each, Canister |
| Specific Gravity | 1.13, 1.14 |
| Specifications Met | UL 94 HB |
| Storage Temperature (Celsius) | 22℃ |
| Storage Temperature (Fahrenheit) | 72 Degree Fahrenheit |
| Surface Type | Unpainted, Powder Coated, Painted, Smooth |
| Units per Case | 1.0 |
| Volume (Imperial) | 1 gal, 5 gal, 55 gal |
| Volume (Metric) | 3.8 L, 18.927 L, 208.198 L |
Safety Data Sheets
Document Number: MSDS_2332211_US_EN
(PDF)
Safety Data Sheets
Document Number: MSDS_4474706_US_EN
(PDF)
Safety Data Sheets
Document Number: MSDS_2205219_US_EN
(PDF)
Safety Data Sheets
Document Number: MSDS_4474771_US_EN
(PDF)
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3M industrial and occupational products are intended, labeled, and packaged for sale to trained industrial and occupational customers for workplace use. Unless specifically stated otherwise on the applicable product packaging or literature, these products are not intended, labeled, or packaged for sale to or use by consumers (e.g., for home, personal, primary or secondary school, recreational/sporting, or other uses not described in the applicable product packaging or literature), and must be selected and used in compliance with applicable health and safety regulations and standards (e.g., U.S. OSHA, ANSI), as well as all product literature, user instructions, warnings, and other limitations, and the user must take any action required under any recall, field action, or other product use notice. Misuse of 3M industrial and occupational products may result in injury, sickness, death, or property damage. For help with product selection and use, consult your on-site safety professional, industrial hygienist, or other subject matter expert.
