3M EC-2216
Harmonization Code : 3214.10.00 | Putty and other mastics | Resin cements, caulking compounds and other mastics
Main features
- Flexible Vibration Resistant Bonding
- High Peel Structural Performance
- Selectable Formulation Processing Window
Product Description
3M Scotch-Weld Epoxy Adhesive EC-2216 B/A is a flexible, room-temperature-curing epoxy for prepared metals, wood, plastics, rubber, and masonry exposed to shock, vibration, flexing, or thermal cycling. The gray formulation mixes 2:3 by volume, provides 90 minutes of work life, and reaches handling strength in 8 to 12 hours. The translucent formulation mixes 1:1 by volume, provides 120 minutes of work life, and reaches handling strength in 12 to 16 hours. Both formulations deliver 25 piw T-peel strength at 24 deg C.
Key features
- Flexible Shock Resistant Bonding: The cured epoxy accommodates vibration, flexing, and thermal movement.
- High Peel Structural Performance: Prepared joints combine peel and shear capability for demanding assemblies.
- Gray Or Translucent Formulations: Distinct formulations support different mixing, handling, and appearance needs.
Applications
Flexible structural bonding of compatible metals, wood, plastics, rubber, masonry, and thermally cycled assemblies.
Technical Specifications
No specifications available.
Additional Information
As-supplied / before-processing properties
Gray and translucent formulations are separated because their mix ratios and processing windows differ.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Available formulations | Gray; translucent | - | Select before processing |
| Gray mix ratio by volume | 2:3 | B:A | Two-part system |
| Translucent mix ratio by volume | 1:1 | B:A | Two-part system |
| Gray work life | 90 | min | 100 g mixed at 24 deg C |
| Translucent work life | 120 | min | 100 g mixed at 24 deg C |
After-processing / final-state properties
Cured values remain separated by formulation where performance differs.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Gray hardness | 50 to 65 | Shore D | ASTM D2240 |
| Translucent hardness | 35 to 50 | Shore D | ASTM D2240 |
| Gray time to handling strength | 8 to 12 | h | At room temperature |
| Translucent time to handling strength | 12 to 16 | h | At room temperature |
| T-peel strength | 25 | piw | Both formulations; ASTM D1876 at 24 deg C |
