3M™ Scotch-Weld™ Structural Adhesives Primer EW-5000
Harmonization Code : 3208.20.90 | Paints and varnishes that are dispersed or dissolved in a non aqueous medium
Main features
- Water Based Epoxy Primer
- Spray Surface Preparation Application
- 0.18 to 0.28 MIL Thickness
Product Description
3M™ Scotch-Weld™ Structural Adhesive Primer EW-5000 is a sprayable, water-based, heat-curing epoxy primer formulated to inhibit corrosion on prepared metal surfaces used in structural adhesive bonding systems. The primer air-dries to a handleable, tack-free condition before baking and can be applied by conventional spray equipment or brush.
Key features
- Corrosion-inhibiting epoxy formulation: Provides a heat-cured primer layer intended to protect prepared metal surfaces against corrosive environments.
- Handleable before baking: Air-dries at ambient temperature to a tack-free condition, eliminating the need for a separate pre-bake before handling.
- Controlled thin-film application: Supports spray application to a target thickness of 0.20 to 0.25 mil (5 to 6 µm) within one box coat of two passes and may also be brush applied.
Applications / Suitable for
- Corrosion-inhibiting priming of properly prepared metal surfaces
- Metal-to-metal structural adhesive bonding systems
- Metal-to-honeycomb structural adhesive assemblies
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Other Properties
Additional Information
As-supplied / before-processing properties
Typical liquid-primer properties. Typical values are not intended for specification purposes.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Color | Yellow | — | As supplied |
| Base | Epoxy resin | — | As supplied |
| Vehicle | Distilled water and small amounts of co-solvents | — | As supplied |
| Net weight | 8.9 (1.06) | lb/gal (g/cc) | Typical |
| Solids content | 31.0 ± 1.5 | % | Typical |
| Corrosion-inhibitor content | 14.7 ± 1.5 | % | Per total non-volatiles |
| Storage temperature | 35 to 45 (1 to 7) | °F (°C) | Store in the original unopened container; do not freeze |
| Shelf life | 12 | months | From date of shipment when stored at 35 to 45°F (1 to 7°C) in the original unopened container |
After-processing / final-state properties
Typical properties of the dried or heat-cured primer. Performance depends on primer thickness, surface preparation, cure cycle, adhesive system, and test configuration.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Cured appearance | Glossy to semi-glossy | — | After cure |
| Air-dry tack | None | — | After ambient-temperature air drying |
| Optimal cured thickness | 0.18 to 0.28 (4.5 to 7.0) | mil (µm) | After cure; normally achieved in 2 to 3 passes depending on temperature and humidity |
| Pencil hardness | 7H | — | ASTM D3363 |
| Pencil hardness after Skydrol® exposure | 7H | — | ASTM D3363 after 7 days in Skydrol® |
| Salt-spray exposure | Pass | — | 40 days, ASTM B117, 1/16-inch-wide scribed lines; no corrosion beyond or inside the scribe under the reported test conditions |
| Minimum thickness for MEK resistance | 0.10 to 0.14 (2.5 to 3.6) | mil (µm) | ASTM D5402 |
