3M™ SCOTCH-WELD™ DP8507NS ACRYLIC ADHESIVE

3M Scotch-Weld DP8507NS Acrylic Adhesive: High-performance two-part structural adhesive

The 3M Scotch-Weld DP8507NS is a two-part structural acrylic adhesive designed for industrial assemblies subject to severe mechanical stress. With shock resistance, vibration tolerance, and primerless adhesion, it succeeds where traditional epoxies reach their limits.

Its 1:1 ratio and non-sagging formulation simplify application, even on vertical surfaces or in difficult positions.

At Dagobert Industrie, we offer this product to professionals who cannot afford a failed joint.

Presentation of the 3M Scotch-Weld DP8507NS acrylic adhesive

The 3M Scotch-Weld DP8507NS is a two-part structural acrylic adhesive designed for demanding assemblies. It is suitable for industrial environments where mechanical strength and durability are non-negotiable.

Its mixing ratio is 1:1, which simplifies application with a standard dispensing gun. The working time is short, which encourages a sustained production rate.

At Dagobert Industrie, we offer this product to professionals looking for a reliable structural adhesive, with no primer required on the majority of substrates.

Composition and two-part acrylic technology

The DP8507NS is based on reactive acrylic chemistry. The two components (resin + activator) react upon mixing to form a rigid joint with high internal cohesion.

Unlike epoxy glues, acrylic technology offers better tolerance for surfaces that are slightly oily or poorly prepared. This is a practical advantage in the workshop.

The NS (Non-Sagging) formulation means the product does not drip on vertical surfaces. Ideal for out-of-plane assemblies or parts in difficult positions.

Key technical benefits:

• High shear strength on metals and composites
• Good resistance to shocks and vibrations
• Primerless adhesion on steel, aluminum, GRP, ABS
• Resistance to common fluids (oils, diluted fuels)
• Curing at room temperature

Product	Technology	Mixing ratio	Working time	Typical usage
3M DP8507NS	2K Acrylic	1:1	~7 min	Metal, composite, rigid plastic
3M DP490	2K Epoxy	2:1	~20 min	Metal, ceramic, wood
3M DP8010	2K Acrylic	10:1	~4 min	Low surface energy plastics (PP, PE)
Loctite EA 9466	2K Epoxy	2:1	~90 min	Slow assemblies, large surfaces

Technical properties and mechanical performance

The 3M Scotch-Weld DP8507NS is a two-part acrylic-based structural adhesive. It is distinguished by high mechanical strength from the first few hours after application.

Its mixing ratio is 1:1, which simplifies application with a standard dispensing gun. The dual-chamber cartridge ensures precise and reproducible dosing.

The working time is approximately 8 minutes at 23 °C. Handling strength is reached in 20 to 30 minutes. Final strength develops in 24 hours.

Here are the main technical characteristics:

• Shear strength: up to 20 MPa on steel
• Peel strength: excellent on rigid substrates
• Service temperature range: -40 °C to +120 °C
• Viscosity: pasty, non-flowing (NS = non-sag)
• Compatible with metals, composites, structural plastics

The non-flowing formulation is particularly suited to vertical or overhead assemblies. The joint remains in place without sliding during polymerization.

Product	Manufacturer	Ratio	Working time	Shear strength	Strength
DP8507NS	3M	1:1	~8 min	~20 MPa	Non-sag, high resistance
DP8410NS	3M	4:1	~4 min	~17 MPa	Fast setting
Araldite 2011	Huntsman	1:1	~90 min	~13 MPa	Long-cure epoxy
Loctite EA 9466	Henkel	1:1	~20 min	~15 MPa	Flexible epoxy

At Dagobert Industrie, we recommend the DP8507NS for demanding structural assemblies where long-term mechanical strength is a priority.

Compatible materials and fields of application

The 3M Scotch-Weld DP8507NS acrylic adhesive adheres to a wide range of materials, including surfaces that are poorly prepared or slightly oily.

It is particularly suitable for difficult substrates like polyethylene (PE) and polypropylene (PP), which are often incompatible with conventional adhesives. This is a decisive advantage in industrial production.

Here are the materials compatible with the DP8507NS:

• Plastics: PE, PP, ABS, PVC, polycarbonate
• Metals: steel, aluminum, stainless steel
• Composites and mixed materials
• Wood, concrete, glass
• Painted or slightly contaminated surfaces

Typical industrial applications

At Dagobert Industrie, we find that this adhesive is mainly used in contexts where mechanical strength and speed of assembly are priorities.

Concrete examples of use:

• Automotive industry: fixing plastic parts, body panels
• Electronics: assembly of housings and mounts
• Construction and joinery: bonding of mixed profiles
• Signage: fixing plates to metal or plastic supports
• Industrial equipment: quick workshop repairs and assembly

The non-sagging (NS) formulation avoids drips on vertical surfaces. Ideal for applications in standing or suspended positions.

Comparison of 3M Scotch-Weld structural acrylic adhesives

The 3M Scotch-Weld structural acrylic range brings together several references with distinct profiles. Here is how the DP8507NS compares to its close cousins.

Product	Working time	Shear strength	Shock resistance	Main usage
3M DP8507NS	7 min	~20 MPa	Very high	Assemblies subject to vibration and shock
3M DP8410NS	10 min	~18 MPa	High	Versatile structural assemblies
3M DP8425NS	25 min	~20 MPa	High	Large surfaces, long positioning time
3M DP8005	5 min	~15 MPa	Moderate	Quick assemblies, low dynamic stress

The DP8507NS is distinguished by its particularly high resistance to shocks and vibrations. It is the right choice when the assembly is subject to repeated dynamic stress.

The DP8425NS offers a longer working time (25 min). Ideal for bonding large surfaces or repositioning parts before polymerization.

The DP8005 cures in 5 minutes. Practical for fast production cycles, but less suited to environments with shocks or vibrations.

In summary, the DP8507NS occupies the best position for mechanical strength / dynamic resistance in the range, with a reasonable working time of 7 minutes.

Implementation advice and precautions for use

The 3M Scotch-Weld DP8507NS is used with a manual or pneumatic dispensing gun equipped with a static mixing nozzle. Never mix by hand: the 1:1 ratio must be scrupulously respected.

Before application, carefully degrease surfaces with a suitable solvent (isopropanol, acetone). On plastics or composites, slight abrasion improves grip.

The open time is approximately 4 minutes at 23 °C. Assemble parts quickly after application. Do not move the assembly until the handling time is over, generally 10 to 15 minutes.

Final strength is reached after 24 hours at room temperature. Increasing the temperature accelerates curing and can improve final mechanical performance.

Some points of vigilance to respect:

• Purge the first few centimeters of the cartridge before attaching the mixing nozzle
• Change the mixing nozzle for every new work session
• Store the cartridge between +15 °C and +27 °C, away from humidity
• Wear gloves and safety glasses: component A is an irritant
• Work in a ventilated space

The shelf life is 12 months in its original unopened packaging. After this period, check performance before any critical structural use.

FAQ - 3M Scotch-Weld DP8507NS Acrylic Adhesive

1. What is the difference between the DP8507NS and a standard epoxy?

The 3M Scotch-Weld DP8507NS is a two-part structural acrylic adhesive, not an epoxy. It offers significantly higher shock and vibration resistance than most rigid epoxies.

Standard epoxies tend to be brittle under dynamic stress. The DP8507NS remains flexible while maintaining high mechanical strength.

2. On which materials can the DP8507NS be used?

It effectively bonds metals (steel, aluminum, stainless steel), composites, structural plastics (ABS, polycarbonate, polyester), and mixed materials.

It is a major asset for multi-material assemblies, frequent in the automotive, marine, or electronics industries.

3. Should surfaces be prepared before bonding?

Yes, always. Careful degreasing with a suitable solvent is essential to obtain the optimal performance of the adhesive.

On some low surface energy plastics, a primer or plasma activation may be necessary. 3M offers compatible primers for this range.

4. What is the working time after mixing?

The DP8507NS has a working time of approximately 7 minutes at 23 °C. This allows time to position parts without rushing.

Handling strength is reached in 20 to 30 minutes. Complete mechanical strength develops in 24 hours.

5. Does the DP8507NS resist difficult environments?

Yes. It withstands exposure to oils, fuels, and common chemical agents in industrial settings. It also holds up well to moderate thermal cycling.

For extreme environments (very high temperatures or prolonged immersion), it is advisable to validate the application with 3M technical data sheets or contact us at Dagobert Industrie.

6. Is a specific dispensing gun required?

Yes. The two-part cartridge requires a 3M dispensing gun adapted to the 1:1 ratio and static mixing nozzles that are supplied or sold separately.

An incorrect mixing ratio directly compromises the performance of the bonded joint. At Dagobert Industrie, we offer the accessories compatible with this cartridge.