3M™ Scotch-Weld™ DP8410NS Acrylic Adhesive

3M Scotch-Weld DP8410NS acrylic adhesive: features and applications

The 3M Scotch-Weld DP8410NS acrylic adhesive is an essential benchmark for demanding structural assemblies. It offers high mechanical strength on metals, composites, and plastics.

Its two-part formula guarantees rapid polymerization and reliable performance even in harsh environments. Ideal for industrial applications where bonding durability cannot be compromised.

What is 3M Scotch-Weld DP8410NS acrylic adhesive?

The 3M Scotch-Weld DP8410NS is a two-part structural acrylic adhesive designed for high-performance assemblies. It comes in a dual-chamber cartridge, with resin and hardener mixed at the time of application.

The mixing ratio is 4:1. Application is performed using an applicator gun and a static mixing nozzle, which ensures precise dosing with every use.

Structural acrylic technology: operating principle

Structural acrylic adhesives work through rapid polymerization upon contact of the two components. The resulting joint resists high mechanical stresses: tension, shear, and peel.

Unlike conventional epoxies, acrylic chemistry is more tolerant of slightly oily or poorly prepared surfaces. This reduces the number of preparation steps on the production line.

The NS (No Styrene) designation indicates the absence of styrene in the formulation. Less odor, fewer regulatory constraints, and a healthier working environment for operators.

The DP8410NS develops a shear strength greater than 15 MPa on steel and aluminum. It is suitable for structural assemblies in the automotive, transport, metal construction, and general industry sectors.

At Dagobert Industrie, we offer this product for applications requiring durable bonding without the need for welding or mechanical fasteners.

Technical properties and performance of the DP8410NS

The 3M Scotch-Weld DP8410NS is a high-performance two-part acrylic adhesive. It is distinguished by its high structural strength, suitable for assemblies subjected to significant mechanical loads.

Its mixing ratio is 1:1, which simplifies application with a standard dispensing gun. The working time is approximately 4 to 6 minutes, with handling strength achieved in less than 20 minutes at room temperature.

The DP8410NS offers tensile strength that can exceed 20 MPa depending on the substrate. It withstands impact, vibration, and peel stress better than most standard epoxies.

It adheres to a wide range of materials:

• Metals (steel, aluminum, stainless steel)
• Composites and plastics (ABS, PC, GRP)
• Painted or primed substrates

The NS (No-Sag) formulation allows it to be used on vertical or sloped surfaces. The adhesive stays in place after application without running.

Product	Technology	Working time	Impact resistance	Vertical application
3M DP8410NS	1:1 Acrylic	~5 min	Excellent	Yes (No-Sag)
3M DP8005	1:1 Acrylic	~4 min	Very good	No
3M DP490	2:1 Epoxy	~90 min	Good	No
Loctite EA 9492	1:1 Epoxy	~30 min	Good	No

At Dagobert Industrie, we offer the DP8410NS for demanding structural applications where impact resistance and ease of use are priorities.

Application fields and compatible materials

The 3M Scotch-Weld DP8410NS structural acrylic adhesive is designed for demanding assemblies where mechanical strength and durability are priorities.
It is widely used in sectors such as industrial construction, electronics, automotive, renewable energy, and the manufacturing of handling equipment.

Substrates suitable for the DP8410NS structural adhesive

The DP8410NS adheres effectively to a wide range of materials, including surfaces that are difficult to bond without excessive preparation:

• Metals: steel, aluminum, galvanized steel, stainless steel
• Plastics: ABS, polycarbonate, polyester, nylon
• Composites: fiberglass, SMC, BMC
• Mixed materials: multi-material metal/plastic assemblies

A major advantage: the DP8410NS tolerates slightly oily or poorly prepared surfaces, which reduces cleaning steps in production.
It is suitable for both permanent structural assemblies and the fastening of components subjected to repeated vibrations or shocks.

Product	Type	Main substrates	Key strength
3M DP8410NS	Structural Acrylic	Metals, plastics, composites	Tolerates oily surfaces
3M DP8005	Structural Acrylic	Polyolefins (PP, PE)	Bonding PP/PE without primer
3M DP490	Structural Epoxy	Metals, ceramics, wood	High rigidity, thermal resistance
Loctite EA 9430	Structural Epoxy	Metals, composites	High impact resistance

Comparison: 3M Scotch-Weld DP8410NS versus other structural acrylic adhesives

The market for structural acrylic adhesives is dense. Here is how the 3M Scotch-Weld DP8410NS positions itself against its main competitors.

Product	Manufacturer	Mixing ratio	Working time	Shear strength	Key strengths
Scotch-Weld DP8410NS	3M	4:1	~10 min	~25 MPa	Solvent-free, low odor, versatile for metals/composites
Scotch-Weld DP8005	3M	4:1	~4 min	~17 MPa	Fast setting, ideal for polyolefins without primer
Scotch-Weld DP8425NS	3M	4:1	~25 min	~28 MPa	Long working time, complex assemblies
Araldite 2021	Huntsman	1:1	~25 min	~22 MPa	Good chemical resistance, flexible
Loctite AA 326	Henkel	Single-component	UV/primer activated	~20 MPa	Precise metal assemblies, thin joints

The DP8410NS stands out for its balance between sufficient working time (~10 min) and high mechanical strength. It is suitable for industrial assemblies without requiring a primer on most substrates.

Compared to Loctite AA 326, it offers easier implementation: no UV activation or specific primer required. Compared to Araldite 2021, it displays higher shear strength on metals and composites.

Compared to the DP8005 (same 3M range), the DP8410NS provides more time to position parts, a real advantage for large-surface or complex-geometry assemblies.

At Dagobert Industrie, we recommend the DP8410NS for applications where low odor and the absence of solvents are important criteria, particularly in confined spaces or series production.

Implementation tips and precautions for use

The 3M Scotch-Weld DP8410NS acrylic adhesive is dispensed using an applicator gun suitable for two-part cartridges. Mixing is performed automatically via the provided mixing nozzle: no manual dosing is necessary.

Before application, thoroughly degrease the surfaces with an appropriate solvent (isopropanol, acetone). Any trace of dust, oil, or moisture significantly reduces the assembly's strength.

Respect the open time indicated by 3M: once the two components are mixed, the adhesive begins to polymerize rapidly. Assemble the parts without delay and hold them in position for the duration of the initial setting time.

The recommended application temperature is between 15 °C and 35 °C. Below 15 °C, polymerization slows down and final strengths may be affected.

Purging the nozzle before use is essential: dispense a few centimeters of product until a homogeneous, uniform-colored mixture is obtained.

• Never reuse a mixing nozzle after drying: replace it for each session.
• Store the cartridge away from heat and moisture, between 5 °C and 25 °C.
• Wear gloves and safety glasses during handling.
• Work in a ventilated space: acrylic vapors are irritating.
• In case of skin contact, wash immediately with soap and water.

Consult the 3M Safety Data Sheet (SDS) before any first use. It specifies the required personal protective equipment and emergency procedures.

FAQ - 3M Scotch-Weld DP8410NS

1. What is the 3M Scotch-Weld DP8410NS and what is it used for?

The 3M Scotch-Weld DP8410NS is a two-part structural acrylic adhesive designed for demanding industrial assemblies.

It bonds materials that are difficult to assemble, such as plastics, composites, metals, and painted substrates, often without extensive surface preparation.

2. What is the difference between an acrylic adhesive and an epoxy adhesive?

A structural acrylic adhesive like the DP8410NS offers better resistance to shock and vibration than a standard epoxy.

It cures faster at room temperature and is more tolerant of slightly greasy or contaminated surfaces. Epoxy, meanwhile, excels in rigid, compressive assemblies.

3. On which materials can the DP8410NS be used?

The DP8410NS adheres to a wide spectrum of substrates: steel, aluminum, GRP, ABS, polycarbonate, polyester, and painted substrates.

This is a major asset in the transport, construction, and manufacturing industries, where multi-material assemblies are common.

4. What are the working time and curing time?

The DP8410NS has a working time of approximately 4 minutes after mixing, which provides time to correctly position parts.

Handling strength is achieved in 20 to 30 minutes. Maximum strength is achieved after 24 hours at room temperature.

5. Does the "NS" designation mean the adhesive does not run?

Yes. NS stands for "No-Sag". The formulation is thixotropic: it stays in place on vertical surfaces without running.

This is particularly useful for bonds in vertical positions or on wide joints, which are frequent in bodywork or panel assembly.

6. Should surfaces be prepared before application?

Minimal preparation is recommended: dusting and light degreasing are sufficient in most cases.

On low surface energy plastics (PP, PE), a 3M primer or corona treatment remains necessary to ensure optimal adhesion.