3M 2216NS
Harmonization Code : 3506.91.90.99 | Prepared glues and other prepared adhesives, not elsewhere specified or included; products suitable for use as glues or adhesives, put up for retail sale as glues or adhesives, not exceeding a net weight of 1 kg ; Adhesives based on polymers of headings 3901 to 3913 or on rubber; Other ; Other
Main features
- Flexible Shock/Vibration/Thermal-Cycling Resistance
- High Peel and Shear Strength
- Visual Two-Part Mix Confirmation
Product Description
3M™ Scotch-Weld™ Epoxy Adhesive 2216 B/A Gray is a flexible, two-part, room-temperature curing epoxy adhesive known for its high peel and shear strength. It offers exceptional resistance to extreme shock, vibration, and flexing, making it ideal for potting parts subject to thermal cycling and cryogenic bonding applications. With its contrasting base and accelerator colors, this structural adhesive ensures a reliable mix and bonds effectively to metals, woods, plastics, rubbers, and masonry products.
Key features
- Flexible and shock resistant: Absorbs stresses from extreme shock, vibration, flexing, and thermal cycling.
- High-strength bonding: Delivers excellent shear and peel strength across multiple substrates, retaining performance after environmental aging.
- Military specification compliant: Meets DOD-A-82720 requirements for high-performance structural applications.
Applications / Suitable for
- Bonding metals, woods, plastics, rubbers, and masonry
- Cryogenic bonding applications
- Potting components subject to thermal cycling
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Physical Properties
Mechanical Properties
Thermal Properties
Additional Information
As-supplied / before-processing properties
Typical properties; these values are not intended for use in preparing specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Mix Ratio by Volume | 2:3 | - | B:A |
| Mix Ratio by Weight | 5:7 | - | B:A |
| Color | White | - | Base |
| Color | Gray | - | Accelerator |
| Viscosity | 75,000-150,000 | cP | Base at 22°C (72°F) |
| Viscosity | 40,000-80,000 | cP | Accelerator at 22°C (72°F) |
| Worklife | 90 | minutes | 100g mixed at 22°C (72°F) |
| Time to Handling Strength | 8-12 | hours | at 22°C (72°F) |
| Time to Full Cure | 7 | days | at 22°C (72°F) |
After-processing / final-state properties
Typical properties; these values are not intended for use in preparing specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Cured Color | Gray | - | - |
| Shore Hardness | 57 | Shore D | ASTM D2240 at 22°C (72°F) |
| T-Peel Adhesion | 25 | lb/in | ASTM D1876 at 22°C (72°F) |
| Shear Modulus | 42 | MPa | ASTM D1002, tested at 22°C (72°F) |
| Dielectric Constant | 5.51 | - | ASTM D150, 1 KHz at 22°C (72°F) |
| Volume Resistivity | 1.9E+12 | Ohm-cm | ASTM D257 at 22°C (72°F) |
| Total Mass Loss (TML) | 0.77 | % | NASA 1124 Rev 4 at 22°C (72°F) |
