3M 4926
Harmonization Code : 3910.00.00.90 | Silicones in Primary Forms; Others
Main features
- Conformable 0.4 mm Acrylic Foam
- Multi-Purpose Acrylic Adhesive
- 620 Kpa Overlap Shear Strength
Product Description
3M™ VHB™ Tape 4926 is a gray, 0.4 mm (0.015 in) double-sided acrylic foam tape for permanent bonding. Its multi-purpose acrylic adhesive bonds to a broad range of high- and medium-surface-energy substrates, including metals, glass, paints, plastics, and plasticized vinyl. The conformable foam core promotes contact between slightly mismatched surfaces, while the pressure-sensitive adhesive develops immediate handling strength upon application. The tape provides a smooth, virtually invisible fastening method and may replace selected rivets, welds, screws, or liquid adhesives when the complete joint design and application conditions are properly evaluated. :contentReference[oaicite:0]{index=0}
Key features
- Conformable acrylic foam construction: The 0.4 mm foam tape promotes adhesive contact when bonded surfaces are slightly mismatched.
- Multi-purpose substrate bonding: Bonds to high- and medium-surface-energy substrates, including metals, glass, paints, plastics, and plasticized vinyl.
- Immediate handling strength: Pressure-sensitive adhesive bonds on contact, with bond strength continuing to build after application.
Applications / Suitable for
- Permanent bonding of metals and glass
- Bonding painted and selected plastic surfaces
- Bonding selected plasticized-vinyl formulations following application-specific evaluation
- Smooth, virtually invisible fastening
- Evaluation as an alternative to selected mechanical fasteners or liquid adhesives
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Mechanical Properties
Thermal Properties
Additional Information
As-supplied / before-processing properties
Typical construction and physical properties of 3M™ VHB™ Tape 4926 as supplied. Values are representative and are not intended for specification purposes. :contentReference[oaicite:1]{index=1}
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Color | Gray | — | Typical |
| Adhesive type | Multi-purpose acrylic | — | Adhesive on both sides |
| Foam type | Conformable acrylic foam | — | Typical construction |
| Density | 720 (45) | kg/m³ (lb/ft³) | ASTM D3574; foam with adhesive |
| Total tape thickness | 0.4 (0.015; 15) | mm (in; mil) | ASTM D3652; thickness tolerance ±15% |
| Liner | White printed DK paper | — | Liner thickness: 0.08 mm (0.003 in; 3 mil) |
| Minimum application temperature | 15 (60) | °C (°F) | Tape and substrates should be conditioned at or above the minimum application temperature |
After-processing / final-state properties
Typical performance characteristics of 3M™ VHB™ Tape 4926. Adhesion and strength values were measured at 23°C (73°F) after 72 hours of dwell unless otherwise stated. Values are representative and are not intended for specification purposes. :contentReference[oaicite:2]{index=2}
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| 90° peel adhesion | 25 (14) | N/cm (lb/in) | ASTM D3330; stainless steel; 5 mil aluminum-foil backing; 304 mm/min (12 in/min) |
| Normal tensile strength | 660 (95) | kPa (lb/in²) | ASTM D897; aluminum; 6.45 cm² (1 in²) bond area; jaw speed 51 mm/min (2 in/min) |
| Overlap shear strength | 620 (90) | kPa (lb/in²) | ASTM D1002 / ISO 4587; stainless steel; 6.45 cm² (1 in²) bond area; jaw speed 12.7 mm/min (0.5 in/min) |
| Static shear holding | 1,000 | g | ASTM D3654; stainless steel; 23°C (73°F); 3.23 cm² (0.5 in²); holds load for 10,000 min |
| Static shear holding at elevated temperature | 500 | g | ASTM D3654; stainless steel; tested at 66°C (150°F) and 93°C (200°F); 3.23 cm² (0.5 in²); holds load for 10,000 min |
| Short-term temperature resistance | 149 (300) | °C (°F) | No change in room-temperature dynamic shear properties after 4 h conditioning with a 100 g static load; process-type exposure |
| Long-term temperature resistance | 93 (200) | °C (°F) | Maximum temperature supporting at least 78 g/cm² (500 g/in²) in static shear for 10,000 min; continuous exposure for days or weeks |
