LORD 304-2
Harmonization Code : 8529.90 | Parts solely or principally used for TV, radio, and transmission
Main features
- High-Viscosity Placement Control
- Rubber, Wood, and FRP Bonding
- Durable Cured Performance with Environmental
Product Description
LORD® 304-1/304-2 Epoxy Adhesive is a high-viscosity, two-component epoxy adhesive system designed for structural bonding applications requiring gap filling and non-sag performance on vertical or overhead surfaces. The adhesive develops durable, load-bearing bonds to prepared metals, fiberglass reinforced plastics (FRP), phenolics, wood, prepared rubber and other engineering substrates. It can be cured at room temperature or with heat to accelerate processing while providing excellent environmental, chemical and temperature resistance across a service range of -30°F to +250°F (-34°C to +121°C). :contentReference[oaicite:0]{index=0}
Key Features
- High-viscosity, non-sag formulation suitable for vertical and overhead bonding applications.
- Excellent adhesion to prepared metals, FRP, phenolics, wood, prepared rubber and other engineering materials.
- Room-temperature or heat-curing system providing durable mechanical performance with low shrinkage, low water absorption and good creep resistance.
Applications / Suitable For
- Structural bonding requiring gap-filling capability
- Vertical and overhead assembly applications
- Metal fabrication and engineered composite assemblies
- Wood, fiberglass reinforced plastic (FRP) and prepared rubber bonding
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Physical Properties
Thermal Properties
Additional Information
As-Supplied / Before-Processing Properties
| Property | 304-1 Resin | 304-2 Hardener | Method / Condition |
|---|---|---|---|
| Appearance | Gray paste | Off-white paste | Typical |
| Viscosity | 40,000–400,000 P | 20,000–100,000 P | Brookfield HBF, Helipath, 1 rpm (T-Bar E / T-Bar C) |
| Density | 11.5–12.3 lb/gal (1378–1474 kg/m³) | 8.4–9.0 lb/gal (1007–1078 kg/m³) | Typical |
| Flash Point | 185°F (85°C) | >200°F (>93°C) | Closed Cup |
| Recommended Mix Ratio (General Purpose) | 1:1 by weight (1:1.3 by volume) | -30°F to +250°F (-34°C to +121°C) | |
| Solids Content | 100% | Mixed adhesive | |
| Working Time | 1–2 hours | 75°F (24°C), 54 g mass | |
| Time to Handling Strength | 8–16 hours | Typical | |
| Mixed Appearance | Gray paste | Typical | |
| Shelf Life | 2 years | Stored unopened at 60–80°F (16–27°C) | |
After-Processing / Final-State Properties
| Property | Value | Method / Condition |
|---|---|---|
| Cure Schedule | 24–48 hours | 65°F (18°C) or higher |
| Service Temperature | -30°F to +250°F (-34°C to +121°C) | Typical operating range |
| Tensile Strength at Break | 4360 psi (30.1 MPa) | ASTM D882-83A (modified) |
| Elongation | 10% | ASTM D882-83A (modified) |
| Young's Modulus | 146,000 psi (1007 MPa) | ASTM D882-83A (modified) |
| Glass Transition Temperature (Tg) | 133°F (56°C) | ASTM E1640-99 by DMA |
