LOCTITE EA 9309.3
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
- Glass-Bead Bondline Control
- 34.5 MPa Aluminum Lap Shear
- Lap Shear Was Evaluated After hot/wet
Product Description
LOCTITE EA 9309.3NA AERO is a toughened two-part epoxy paste adhesive for bonding metal skins and honeycomb core. The formulation contains 0.13 mm glass beads that help establish a controlled bondline during assembly. It produces flexible bonded joints and provides high shear and peel strength on prepared aluminum under the documented test configurations. The adhesive can cure at room temperature or with an elevated-temperature cycle, with a 35-minute pot life for a 450 g mixed mass at 25°C. Performance data include lap shear across -55°C to 82°C, peel testing, hot/wet exposure, water, hydraulic oil, fuel, anti-icing fluid, and salt spray.
Key features
- Controlled bondline thickness: Integrated 0.13 mm glass beads help maintain the intended adhesive bondline.
- Aluminum shear and peel performance: Typical ASTM D1002 lap shear at 25°C is 32.8-34.5 MPa, while T-peel reaches 214 N/25 mm under the stated aluminum preparation and cure conditions.
- Room-temperature or heat cure: Cure for 3-5 days at 25°C or 1 hour at 82°C; pot life is 35 minutes for a 450 g mixed mass at 25°C.
Applications / Suitable for
- Bonding aluminum metal skins to honeycomb core
- Prepared aluminum joints requiring both shear and peel performance
- Bonded assemblies evaluated for humidity, water, common fluid, and salt-spray exposure
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Physical Properties
Additional Information
LOCTITE EA 9309.3NA AERO
LOCTITE EA 9309.3NA AERO is a toughened, two-part epoxy paste adhesive for bonding metal skins and honeycomb core. Integrated 0.13 mm glass beads control bondline thickness, while the cured adhesive provides flexible joints with strong aluminum shear and peel performance. Test data cover low-temperature, ambient, elevated-temperature, hot/wet, fluid, water, and salt-spray conditions.
LOCTITE EA 9309.3NA AERO two-part epoxy paste adhesive.
Component and material properties
Values apply to the separate, unmixed components unless otherwise stated. Viscosity values retain the stated instrument, spindle, speed, and temperature conditions.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Product form | Two-part toughened epoxy paste adhesive | — | Part A and Part B mixed immediately before application |
| Bondline control | 0.13 | mm | Integrated 5 mil glass beads |
| Part A color | Pink-red | — | As supplied |
| Part B color | Blue | — | As supplied |
| Part A viscosity | 150-300 | Pa·s | 25°C; Brookfield HBT, spindle 7 at 2.1 rad/s |
| Part B viscosity | 0.01-0.02 | Pa·s | 25°C; Brookfield LVF, spindle 1 at 6.3 rad/s |
| Warranty life - Part A | 1 | year | Stored below 25°C |
| Warranty life - Part B | 1 | year | Stored below 25°C |
Processing guidance
Prepare clean, dry bonding surfaces, mix the two components completely at the specified weight ratio, apply the adhesive, and maintain contact or pressure until the joint develops handling strength. Processing times and performance depend on mixed mass, temperature, surface preparation, bondline, and cure conditions.
Warranty life is 1 year for both components when stored below 25°C. Keep containers tightly closed in a cool, well-ventilated area away from incompatible materials. Part B has a safe storage range of 0-25°C and must not be heated above 100°C. This material is for industrial use only.
Cured mechanical and thermal properties
Typical bulk-resin data apply to the stated casting geometry, cure, conditioning, and test method. They are not bonded-joint design allowables.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Tensile strength | 32.2 | MPa | ASTM D638; 3.18 mm casting; cure 72 hours at 25°C; tested at 25°C |
| Tensile modulus | 2,303 | MPa | ASTM D638; 3.18 mm casting; cure 72 hours at 25°C; tested at 25°C |
| Shear modulus | 841 | MPa | Cure 72 hours at 25°C; tested at 25°C |
| Poisson's ratio | 0.36 | — | Cure 72 hours at 25°C; tested at 25°C |
| Elongation at break | 10 | % | ASTM D638; cure 72 hours at 25°C; tested at 25°C |
| Shore D hardness | 80 | — | ASTM D2240; cure 72 hours at 25°C; tested at 25°C |
| Compressive strength | 51.7 | MPa | ASTM D695; 12.7 mm casting; tested at 25°C |
| Compressive modulus | 1,688 | MPa | ASTM D695; 12.7 mm casting; tested at 25°C |
| Glass transition temperature, dry | 61 | °C | DMTA; cure 72 hours at 25°C |
| Glass transition temperature, wet | 64 | °C | DMTA; cure 72 hours at 25°C; conditioned at 71°C and 85% RH to saturation |
| Glass transition temperature, dry | 81 | °C | DMTA; cure 1 hour at 82°C |
| Glass transition temperature, wet | 64 | °C | DMTA; cure 1 hour at 82°C; conditioned at 71°C and 85% RH to saturation |
Cured electrical properties
Values describe bulk cured material. Electrical performance in an assembled joint depends on bondline, geometry, electrodes, conditioning, and operating conditions.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Dielectric constant | 4.33 / 4.29 / 4.17 | — | ASTM D150 at 0.1 / 1.0 / 10.0 kHz |
| Dissipation factor | 0.018 / 0.014 / 0.028 | — | ASTM D150 at 0.1 / 1.0 / 10.0 kHz |
| Volume resistivity | 1.36 × 1014 | ohm·cm | Bulk cured material |
| Surface resistivity | 4.94 × 1014 | ohm | Bulk cured material |
| Thermal conductivity | 4.50 × 10-4 | cal/(s·cm·°C) | Bulk cured material |
Performance evidence
The following typical results are configuration-specific. Aluminum alloy, surface preparation, adherend thickness, cure, pressure or vacuum, conditioning, and test temperature materially affect the values.
- 2024-T3 clad aluminum with FPL preparation, cured 72 hours at 25°C under 0.7 bar pressure: 37.7 MPa at -55°C, 32.8 MPa at 25°C, and 6.4 MPa at 82°C.
- 2024-T3 bare aluminum with PAA preparation, cured 2 hours at 66°C under 0.7 bar pressure: 34.5 MPa at 25°C and 6.9 MPa at 82°C.
- Typical T-peel at 25°C: 214 N/25 mm for 2024-T3 clad aluminum after a 72-hour cure at 25°C, and 142 N/25 mm for 2024-T3 bare aluminum after a 2-hour cure at 82°C.
- Typical T-peel at -55°C: 138 N/25 mm and 93 N/25 mm for the same respective configurations.
- Typical floating roller peel at 25°C: 418 N/25 mm on PAA-treated 2024-T3 bare aluminum after a 72-hour cure at 25°C.
Applications
Application fit depends on the exact aluminum alloy or facing, core construction, surface preparation, bondline, cure process, joint geometry, loads, and operating environment.
Evaluate LOCTITE EA 9309.3NA AERO for your bonded assembly
Contact Krayden to discuss aluminum or honeycomb-core substrates, surface preparation, bondline control, mix and cure conditions, test requirements, samples, and commercial availability for your application.
