3M EC-1751
Harmonization Code : 3214.10.00 | Putty and other mastics | Resin cements, caulking compounds and other mastics
Main features
- Metal Repair And Void Filling
- Controlled Thick Paste Placement
- Flexible Ambient Or Heat Cure
Product Description
3M Scotch-Weld Epoxy Adhesive EC-1751 B/A is a gray, aluminum-filled two-part epoxy for structural metal bonding, void filling, and repair of holes, dents, and cracks. Mix Part B and Part A at 3:2 by volume or 2:1 by weight; the thick paste remains where applied and provides approximately 45 minutes of work life at 24 deg C. Handling strength develops in 8 to 12 hours. After cure, the adhesive reaches Shore D 75 to 80 hardness and 2000 psi overlap shear on prepared aluminum at 24 deg C.
Key features
- Metal Repair And Void Filling: The aluminum-filled paste supports holes, dents, cracks, and irregular bondlines.
- Controlled Thick Paste: High viscosity helps keep the adhesive in place during assembly.
- Room Temperature Or Heat Cure: The two-part epoxy supports ambient cure or faster controlled heat schedules.
Applications
Structural bonding of prepared metals, composites, and selected plastics; metal-hole repair; dent filling; and crack repair.
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Other Properties
Additional Information
As-supplied / before-processing properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Part B color | Gray | - | Before mixing |
| Part A color | Amber | - | Before mixing |
| Mix ratio by weight | 2:1 | B:A | Two-part system |
| Mix ratio by volume | 3:2 | B:A | Two-part system |
| Part B density | 10.8 | lb/gal | As supplied |
| Part A density | 7.9 | lb/gal | As supplied |
| Work life | Approximately 45 | min | At 24 deg C |
After-processing / final-state properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Hardness | 75 to 80 | Shore D | Cured |
| Thermal conductivity | 0.2229 | BTU/hr/ft2/deg F/ft | At 36 deg C |
| Overlap shear strength | 2000 | psi | Aluminum; ASTM D1002; tested at 24 deg C |
| T-peel strength | 4 | piw | Aluminum; ASTM D1876; tested at 24 deg C |
| Time to handling strength | 8 to 12 | h | At room temperature |
