3M 2158
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
- High-Strength Structural Bonding
- 120-Minute Working Window
- 1:1 Meter-Mix Processing
Product Description
3M™ Scotch-Weld™ Epoxy Adhesive 2158 B/A is a two-part, high-strength epoxy adhesive that chemically cures at room temperature to form a durable gray bond. It provides excellent adhesion to a wide variety of substrates, including metals, many plastics, wood, and damp concrete. Featuring a convenient 1:1 mix ratio by weight or volume, it is also recognized as meeting UL 94 HB standards for flammability.
Key features
- Convenient mix ratio: Features a 1:1 mix ratio by weight or volume for simplified dispensing and application.
- Versatile adhesion: Bonds strongly to multiple substrates, including metals, plastics, wood, and damp concrete.
- Extended work life: Offers a 120-minute open time at room temperature, allowing ample time for complex assemblies and positioning.
Applications / Suitable for
- High-strength structural bonding
- Assembling metals, plastics, and wood
- Applications requiring bonding to damp concrete
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Physical Properties
Mechanical Properties
Electrical 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 | 1:1 | - | By weight or volume |
| Color | White | - | Base |
| Color | Dark Gray | - | Accelerator |
| Viscosity | 250,000 - 450,000 | cP | Base at 23°C |
| Viscosity | 200,000 - 800,000 | cP | Accelerator at 23°C |
| Work Life | 120 | minutes | 100g mixed at 23°C |
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 | - | - |
| Durometer Hardness | 85 | Shore D | ASTM D2240 |
| T-Peel Adhesion | 3 | lb/in width | ASTM D1876, FPL Etched Aluminum |
| Dielectric Constant | 5.6 | - | 1 KHz (ASTM D150) |
| Volume Resistivity | 1.4E+15 | Ohm-cm | ASTM D257 |
