Brand: 3M™ Scotch-Weld™
Package Sizes:
Shelf Life: 18 months
3M™ Scotch-Weld™ Urethane Adhesive DP620NS is a flexible, two-part polyurethane-based structural adhesive that performs well in applications requiring flexibility. It effectively bonds to various substrates, including composites, metals, wood, many plastics, rubbers, ceramics, and glass (primer may be required for durability). This adhesive dispenses as a non-sag paste, allowing for precise application without dripping or migration.
| Attribute | Value |
|---|---|
| Color | Black |
| Mix Ratio by Volume (B:A) | 1:1 |
| Mix Ratio by Weight (B:A) | 1:1 |
| Base Color | Clear Yellowish |
| Accelerator Color | Opaque Black |
| Base Density | 9.0 – 9.4 lb/gal |
| Accelerator Density | 9.5 – 9.9 lb/gal |
| Base Viscosity (23°C / 73°F) | 3000 – 6000 cP |
| Accelerator Viscosity (23°C / 73°F) | 1000 – 5000 cP |
| Attribute | Temperature | Value |
|---|---|---|
| Open Time | – | 20 min |
| Work Life (10g mixed) | 23°C (73°F) | 20 min |
| Time to Handling Strength | 23°C (73°F) | 4 h |
| Attribute | Test Method | Temperature | Value |
|---|---|---|---|
| Cured Color | – | – | Black |
| Modulus | ASTM D638, ISO 527 | 23°C (73°F) | 131,000 lb/in² |
| Strain at Break | ASTM D638, ISO 527 | 23°C (73°F) | 110% |
| Shore D Hardness | ASTM D2240 | 23°C (73°F) | 50 |
| Continuous Temperature Range | – | -51°C to 121°C (-60°F to 250°F) | |
| Test | Substrate | Surface Prep | Test Method | Value |
|---|---|---|---|---|
| Overlap Shear Strength | Aluminum | MEK/Abrade/MEK | ASTM D1002, ISO 4587 | 2,880 lb/in² |
| Overlap Shear Strength | Cold Rolled Steel | MEK/Abrade/MEK | ASTM D1002, ISO 4587 | 1,700 lb/in² |
| Overlap Shear Strength | ABS | IPA Wipe/Abrade/IPA Wipe | ASTM D1002, ISO 4587 | 630 lb/in² |
| Overlap Shear Strength | Polycarbonate (PC) | IPA Wipe/Abrade/IPA Wipe | ASTM D1002, ISO 4587 | 430 lb/in² |
| Overlap Shear Strength | Acrylic (PMMA) | IPA Wipe/Abrade/IPA Wipe | ASTM D1002, ISO 4587 | 400 lb/in² |
| Overlap Shear Strength | Fiber-Reinforced Plastic | IPA Wipe/Abrade/IPA Wipe | ASTM D1002, ISO 4587 | 700 lb/in² |
| Overlap Shear Strength | Polyvinyl chloride (PVC) | IPA Wipe/Abrade/IPA Wipe | ASTM D1002, ISO 4587 | 480 lb/in² |
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