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.
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Other Properties
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 |
