LORD 850S/25GB
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
- Welding/Fastener Replacement Bonding
- 6 to 10-Minute Working Time
- Documented Chemical/Moisture/Salt-Spray/Weather Resistance
Product Description
LORD® 850S/25GB Toughened Structural Acrylic Adhesive is a two-component structural acrylic adhesive system consisting of LORD® 850S Adhesive and LORD® Accelerator 25GB. Designed to replace welding, brazing, riveting and other mechanical fastening methods, it bonds a wide variety of prepared and unprepared metals as well as selected engineered plastics and polymer composite substrates. The toughened formulation provides excellent impact and peel strength while accommodating demanding structural bonding applications.
Key Features
- Replaces welding, brazing, riveting and other mechanical fastening methods.
- Bonds prepared and unprepared metals, FRP and selected engineered plastics with minimal substrate preparation.
- High impact and peel strength with 100% elongation for improved fatigue resistance.
- Service temperature from -40°F to +300°F (-40°C to +149°C).
- Non-sag formulation for vertical and overhead applications.
- Resists dilute acids, alkalis, solvents, greases, oils, moisture, salt spray, weathering and indirect UV exposure.
Suitable For
- Structural metal bonding
- FRP and composite bonding
- Engineered plastic bonding
- Automotive assembly applications
- Industrial structural assembly
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Physical Properties
Thermal Properties
Additional Information
As-Supplied / Before-Processing Properties
| Property | Value |
|---|---|
| Appearance | Amber paste |
| Viscosity | 150,000–550,000 cP @ 77°F (25°C), Brookfield |
| Density | 8.00–8.30 lb/gal (959–995 kg/m³) |
| Flash Point | 59°F (15°C), Seta Closed Cup |
| Mix Ratio | 10:1 by volume (Adhesive : LORD® Accelerator 25GB) |
| Mixed Appearance | Red paste |
| Working Time | 6–10 minutes @ 75°F (24°C) |
| Time to Handling Strength | 18–24 minutes @ 75°F (24°C), 50 psi shear |
| Full Cure Time | 2 hours @ 75°F (24°C) (90% strength after 1 hour) |
| Solids Content | 100% |
After-Processing / Final-State Properties
| Property | Value | Test Method |
|---|---|---|
| Hardness | Shore D 66 | — |
| Tensile Strength at Break | 2,610 psi (18.0 MPa) | ASTM D638, modified |
| Elongation | 100% | ASTM D638, modified |
| Young's Modulus | 105,000 psi (724 MPa) | ASTM D638, modified |
| Glass Transition Temperature (Tg) | 176°F (80°C) | ASTM E1640-99 (DMA) |
