LORD 306-2
Harmonization Code : 8529.90 | Parts solely or principally used for TV, radio, and transmission
Main features
- 306-1 Epoxy Hardener
- 1 to 2-Hour Working Time
- 24 to 48-Hour Room-Temperature Cure
Product Description
LORD® 306-1/306-2 Epoxy Adhesive is a general-purpose, high-viscosity, two-component epoxy adhesive formulated for structural bonding applications requiring excellent gap-filling capability and non-sag performance on vertical or overhead surfaces. The adhesive system provides durable, chemically and environmentally resistant bonds and conforms to MIL-A-24456 for bonding plastic vibration damping tiles to steel. It can be cured at room temperature or heat cured for faster production while delivering reliable service across temperatures from -30°F to +250°F (-34°C to +121°C). :contentReference[oaicite:0]{index=0}
Key Features
- High-viscosity, non-sag epoxy formulation for gap filling and vertical or overhead applications.
- Provides durable structural bonds with resistance to moisture, weathering, dilute acids, alkalis, solvents, greases and oils.
- Low-shrinkage adhesive with good creep resistance and low water absorption for demanding industrial assemblies.
Applications / Suitable for
- General structural bonding applications
- Gap-filling and non-sag bonding on vertical or overhead surfaces
- Bonding plastic vibration damping tiles to steel
- Industrial metal and engineering material assemblies
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Appearance
306-1 Resin: Grey Paste | 306-2 Hardener: Off White Paste
Appearance at room temperature.
Density
Resin: 1378 -1474 | Hardener: 1007-1078 kg/m3
Volumetric mass per unit
Physical Properties
Viscosity
Resin: 40,000 - 400,000 | Hardener: 20,000 - 100,000 mPa.s
Viscosity is a measurement of a fluid’s resistance to flow.
Viscosity is commonly measured in centiPoise (cP). One cP is defined as
the viscosity of water and all other viscosities are derived from this base. MPa is another common unit with a 1:1 conversion to cP.
A product like honey would have a much higher viscosity -around 10,000 cPs-
compared to water. As a result, honey would flow much slower out of a tipped glass than
water would.
The viscosity of a material can be decreased with an increase in temperature in
order to better suit an application
Thermal Properties
Flash Point
Resin: 85 | Hardener: >93 °C
The flashpoint of a solvent is the lowest possible temperature at which it can vaporize to form an ignitable vapor.
Flashpoint is often confused with “autoignition temperature”, which is the temperature at which a solvent ignites without an ignition source.
Additional Information
As-Supplied / Before-Processing Properties
| Property | 306-1 Resin | 306-2 Hardener | Method / Condition |
|---|---|---|---|
| Appearance | Grey Paste | Off-white Paste | Typical |
| Viscosity | 40,000–400,000 P | 20,000–100,000 P | Brookfield HBF, Helipath, 1 rpm (T-Bar Spindle E / C), 77°F (25°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 |
| General Purpose Mix Ratio | 1:1.3 by volume (1:1 by weight) | -30°F to +250°F (-34°C to +121°C) | |
| MIL-A-24456 Mix Ratio | 5:3 by weight | Specification | |
| Solids Content | 100% | Mixed adhesive | |
| Working Time | 1–2 hours | 75°F (24°C), 54 g mass | |
| Time to Handling Strength | 8–16 hours | Temperature dependent | |
| Mixed Appearance | Grey 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 | 146,070 psi (1007 MPa) | ASTM D882-83A (modified) |
| Glass Transition Temperature (Tg) | 133°F (56°C) | ASTM E1640-99 by DMA |
| Cured Appearance | Grey | Typical |
