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3M™ Scotch-Weld™ Epoxy Adhesive DP420 Black, 37
mL, 12 per case
3M ID 62277814356, UPC 00021200415289
Overview
Details
Specifications
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High peel and shear strength maintains enduring bond at both and low temperatures
Toughened for impact and fatigue resistance
Moderate work-life provides ample time for positioning and adjustment for fit
Medium viscosity, self-leveling formula provides easy, precise dispensing
Adhesive cures at room temperature, making it a convenient and easy to use solution for tough
end applications
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.
When using a Duo-Pak (DP) size adhesive, rely on 3M dispensing equipment for convenient and
accurate metering, mixing and dispensing.
High Peel and Shear Strength Maintains Lasting Bond at High and Low Temperatures
3M™ Scotch-Weld™ Epoxy Adhesive DP420 maintains bond strength at high and low temperatures
and can withstand paint bake operations up to 400°F 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 Off-White meets the requirements for UL 94 HB.
Recommended Applications
Small joint assembly
Heavy-duty mounting assembly
Metalworking
Carbon fiber epoxy bonding
Details
High peel and shear strength
maintains enduring bond at both
and low temperatures
Toughened for impact and fatigue
resistance
Moderate work-life provides
ample time for positioning and
adjustment for fit
Medium viscosity, self-leveling
formula provides easy, precise
dispensing
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20 Minute Work Life Provides Time for Positioning and Adjustment
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 user and the job.
Toughened for Impact and Fatigue Resistance
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.
What are Epoxy Adhesives?
Epoxy adhesives are part of the class of adhesives called "structural adhesives," which also includes
polyurethane, acrylic, cyanoacrylate and others. Epoxies are formulated as liquid reactive polymers
that undergo a chemical reaction when mixed and then cure to form a solid plastic material. Once the
two parts are mixed in their specified ratio, they begin the curing process and offer a limited work life
(open time) where the adhesive can be applied and the two surfaces positioned as needed. This work
life lasts anywhere from a few minutes to several hours. These structural adhesives provide high shear
and peel strengths, depending on the formula, and better heat and chemical resistance than other
common adhesives. In general, epoxy adhesives have the highest overall strength and offer the best
performance and most resistance to high temperatures, solvents and outdoor weathering.
Epoxy adhesives are widely used in building and home construction; aircraft and automobile
manufacturing; bicycle, boat, golf clubs, ski and snowboard assembly as well as a host of home use and
other applications. They are used virtually anywhere high-strength bonds are needed along with
resistance to environmental conditions. These adhesives are popular for their ease of use, mechanical
strength and chemical resistance. Formulations can be created to make epoxies flexible or rigid,
transparent or opaque, quick setting or slow setting. The versatility with which epoxy adhesives can be
formulated helps meet almost any requirement for bonding wood, metal, glass, stone and various
plastics.
Industrial uses for epoxies range widely and, in addition to adhesives, include coatings and composite
materials like carbon fiber and glass-reinforced composites. They are the preferred choice due to their
ability to flow and conform to the work area, strong adhesion, chemical and heat resistance and
exceptional mechanical and electrical insulating properties.
Specifications
Adhesive Type Epoxy
Brand Scotch-Weld
Color Black
Consumer Label No
Full Cure 24 Hours @ 72 F (22 C)
Hardness 75-80 Shore D
Indoor/Outdoor Both
Industries Construction , Consumer Goods , Electronics , General Industrial
, Military and Government , Specialty Vehicle , Transportation
Mix Ratio Volume
Base:Accelerator
2 : 1
Open Time 20 minutes @ 72 F (22 C)
Physical Form Flowable Liquid
Product Form Each
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Product Type Epoxy Adhesive
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 72 Degree Fahrenheit
Substrate 1 Glass & Ceramics , Metal
Substrate 2 Glass & Ceramics , Metal
Substrates HSE Plastics and Glass , Paint , Smooth , Wood
Viscosity Range (cps) at Room
Temperature
30,000
Volume (metric) 37 Millilitre
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