Brands: Scotch-Weld™
Package Sizes:
Shelf Life: 12 months
3M™ Scotch-Weld™ Metal Bonder Acrylic Adhesive DP8407NS Gray is a high-performance, two-part acrylic adhesive that offers excellent shear, peel, and impact performance. This toughened product provides excellent adhesion to many plastics and metals, including those with slightly oily surfaces. The special formulation provides outstanding durability on metal substrates (including bare steel, copper, brass, bronze, and galvanized steel), even when exposed to high temperature and humidity environments. It contains 0.010″ diameter glass beads to control bond line thickness.
| Attribute | Base Component | Accelerator Component |
|---|---|---|
| Color | Brown | Dark Gray |
| Viscosity | 15,000 cP¹ | 50,000 cP¹ |
| Density | 0.98 g/cm³² | 1.08 g/cm³² |
| Mix Ratio by Volume (B:A) | 10:1 | |
| Mix Ratio by Weight (B:A) | 9:1 |
¹ Viscosity measured using cone-and-plate viscometer; reported viscosity at 3.8 sec⁻¹ shear rate.
² Density measured using pycnometer.
| Attribute | Value |
|---|---|
| Color (Mixed) | Gray |
| Density (Mixed) | 0.99 g/cm³ |
| Viscosity (Mixed) | 20,000 cP |
| Work Life | 5–7 minutes¹ |
| Open Time | 6–8 minutes² |
| Set Time | 22–26 minutes³ |
| Time to Structural Strength | 28–32 minutes⁴ |
| Full Cure Time | 24 hours at 23°C (73°F) |
¹ Maximum time adhesive can remain in a static mixing nozzle and still be expelled without undue force on the applicator.
² Maximum time allowed after applying adhesive to a substrate before bond must be closed and fixed.
³ Minimum time required to achieve 0.3 MPa (50 psi) of overlap shear strength.
⁴ Minimum time required to achieve 6.9 MPa (1,000 psi) of overlap shear strength.
| Attribute | Test Method | Value |
|---|---|---|
| Modulus | ASTM D638 | 1,200 MPa (170,000 psi)¹ |
| Tensile Strain at Break | ASTM D638 | 10%² |
¹ 3 mm (1/8″) thick Type I test specimens; samples pulled at 5 mm/min (0.2 in/min).
² 3 mm (1/8″) thick Type I test specimens; samples pulled at 5 mm/min (0.2 in/min).
Overlap Shear Strength
| Substrate | Surface Preparation | Test Temperature | Dwell Time | Strength¹ |
|---|---|---|---|---|
| Aluminum | Light Abrasion and Solvent Clean | 23°C (73°F) | 24 hours | 31 MPa (4,500 psi) (CF) |
| Stainless Steel | Light Abrasion and Solvent Clean | 23°C (73°F) | 24 hours | 26 MPa (3,800 psi) (CF) |
| Cold Rolled Steel | Light Abrasion and Solvent Clean | 23°C (73°F) | 24 hours | 24 MPa (3,500 psi) (CF) |
| Galvanized Steel | Light Abrasion and Solvent Clean | 23°C (73°F) | 24 hours | 23 MPa (3,400 psi) (CF) |
| Copper | Light Abrasion and Solvent Clean | 23°C (73°F) | 24 hours | 13 MPa (1,900 psi) (AF) |
| Brass | Light Abrasion and Solvent Clean | 23°C (73°F) | 24 hours |
Stronger Bonding. Cleaner Process. Reliable Performance. If you are looking for an adhesive that combines high adhesion strength, flexibility, and electronic safety, 3320-80 is the
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As the year draws to a close and the Christmas season arrives, Avantek Viet Nam would like to extend our warmest Christmas greetings to all our valued customers, partners, and friends.
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