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3M™ Scotch-Weld™ Epoxy Adhesive DP420

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  • High peel and shear strength maintains lasting bond at high and low temperatures
  • Toughened for impact and fatigue resistance
  • 20-minute work life provides time for positioning and adjustment
  • Adhesive cures at room temperature, making it a convenient and easy to use solution for challenging applications
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Specifications
Adhesive Type
Epoxy
Applications
Alternatives to Rivetting or Welding, Bonding, Hard Disk Drive Component Assembly, Impact resistant, Large Surface Lamination Assembly, Mounting and Trim Attachment, Panel & Trim Bonding, Panel to Frame/Stiffner to Panel Assembly, Potting, Small Joint Assembly, Structural Bonding, Vibration resistant
Brand
Scotch-Weld™
Colour
Black, White
Consumer Label
No
Design Challenges
Impact & Shock Absorption, Noise Vibration & Harshness Control NVH
Flame Retardant
UL94 HB
Full Cure
24 Hours @ 72 F (22 C)
Hardness
75-80 Shore D
Indoor/Outdoor
Both
Industries
Composite, Construction, Consumer Goods, Electronics, General Industrial, Metalworking, Military and Government, MRO, Plastic, Rubber, Signage, Specialty Vehicle, Transportation, Woodworking
Maximum Operating Temperature (Fahrenheit)
175 Degree Fahrenheit
Mix Ratio Volume Base:Accelerator
2 : 1
Open Time
20 minutes @ 72 F (22 C)
Physical Form
Flowable Liquid
Position
Best
Product Form
Cartridge, Each
Product Type
Epoxy Adhesive
Set Time
10 to 30 Minute
Shear Strength at 72 Degrees F (22 Degrees C)
4500 Pound-Force Per Square Inch
Shelf Life in Months (from date of manufacture)
15
Specific Gravity
1.13
Storage Temperature
60-80 F (16-27 C), 72 Degree Fahrenheit
Substrate
Ceramic, Glass, Glass & Ceramics, HSE Plastics and Glass, Metal, Metal (Unpainted), Paint, Paints (Powder Coat, Painted Metal, Composite Panel), Plastics: HSE, MSE (ABS, Acrylic, Polycaronate, Nylon), Smooth, Stone, Wood
Substrate 1
Glass, Glass & Ceramics, Metal, Paint, Plastic, Easy-to-Bond (HSE), Smooth, Wood
Substrate 2
Ceramic, Glass, Glass & Ceramics, HSE Plastics and Glass, Metal, Metal (Unpainted), Paint, Paints (Powder Coat, Painted Metal, Composite Panel), Plastics: HSE, MSE (ABS, Acrylic, Polycaronate, Nylon), Smooth, Stone, Wood
Units per Case
12, 6
Viscosity
Self-Leveling
Viscosity Range (cps) at Room Temperature
30,000, Base: 190,000-270,000, Accelerator: 60,000-130,000
Volume
1.2 Fluid Ounce (US), 1.25 Fluid Ounce (US), 13.53 Fluid Ounce (US), 6.8 Fluid Ounce (US), 7.03 Fluid Ounce (US)
Volume (metric)
200 Millilitre, 35 Millilitre, 37 Millilitre, 400 Millilitre, 50
Work Time
15-30 Minutes
Details
  • High peel and shear strength maintains lasting bond at high and low temperatures
  • Toughened for impact and fatigue resistance
  • 20-minute work life provides time for positioning and adjustment
  • Adhesive cures at room temperature, making it a convenient and easy to use solution for challenging applications
  • Reaches high strength quickly with heat cure

3M™ Scotch-Weld™ Epoxy Adhesive DP420 is a toughened, two-part epoxy structural adhesive that provides good strength along with high impact and fatigue resistance to meet demanding bonding challenges. 3M™ Scotch-Weld Epoxy Adhesive DP420 can replace mechanical fasteners, screws, rivets, and spot welds in many applications.

3M™ Scotch-Weld™ Epoxy Adhesive DP420 maintains bond strength at high and low temperatures and can withstand paint bake operations up to 400°F (204.4°C) for 60 minutes. It works well on a variety of substrates such as metals, ceramics, wood, glass, many composites, and plastics and is an excellent indoor bonding agent for joining, gluing, potting, panel bonding, and structural bonding. 3M™ Scotch-Weld™ Epoxy Adhesive DP420 reaches handling strength in approximately two hours and is fully cured in 24 hours (at 72°F/22°C.) The mix ratio is 2:1 and provides a 20-minute work life, providing time to adjust for desired fit prior to curing. This adhesive is available in a variety of package sizes and can be dispensed in several ways to meet the demands of the job. 3M™ Scotch-Weld ™ Epoxy Adhesive DP420 is appropriate for applications that will face tough environmental challenges. Formulated to provide strong adhesion for the long-term, this resilient epoxy is another way 3M meets and exceeds the demands of even the toughest applications.

Suggested Applications

  • Designed for general industrial, sporting goods, solar energy, wind energy, composites, electronics, military, transportation, and aerospace applications
  • Ideal for joining, gluing, attaching, assembling, combining, repairing, , panel bonding, adhering, and structural bonding
  • Alternative to riveting or welding, bolt setting, frame building, rivet-free assembly
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