Loctite EA 9309.3NA AERO EPOXY PASTE ADHESIVE
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
- High Aluminum Shear and Peel Strength
- Glass-Bead Bondline Control
- Humidity and Fluid Resistance
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 5 mil / 0.13 mm glass beads to control bondline thickness and forms tough, permanently flexible joints. It combines high shear and peel strength on aluminum with resistance to humidity, water, and common fluids. The adhesive uses a 100:22 mix ratio by weight and provides a 35-minute pot life for a 450 g mass at 77°F / 25°C. It may be cured for 3–5 days at 77°F / 25°C or for 1 hour at 180°F / 82°C to achieve normal performance.
Key features
- High shear and peel strength: Delivers strong aluminum bonding performance under the documented substrate preparation, cure, and test conditions.
- Controlled bondline thickness: Contains 5 mil / 0.13 mm glass beads to support consistent adhesive spacing.
- Environmental resistance: Cured joints resist humidity, water, and most common fluids.
Applications / Suitable for
- Bonding metal skins to honeycomb core
- Aluminum joints requiring combined shear and peel performance
TDS, SDS & Technical Documents
Technical Specifications
Physical Properties
Viscosity (Part A)Viscosity (Part A)
150,000 to 380,000 mPa.sViscosity (Part B)Viscosity (Part B)
10 to 20 mPa.sGeneral Properties
Mix RatioMix Ratio
100:22Additional Information
Technical properties
As-supplied / before-processing properties
Uncured component and mixed-material properties for LOCTITE® EA 9309.3NA AERO. Component identity, temperature, batch size, test method, and processing condition are retained where provided.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Product form | Two-part toughened epoxy paste adhesive | — | As supplied |
| Color — Part A | Pink-red | — | As supplied |
| Color — Part B | Blue | — | As supplied |
| Viscosity — Part A | 1,500–3,800 | Poise | 77°F; Brookfield HBT, spindle 7 at 20 rpm |
| Viscosity — Part B | 0.1–0.2 | Poise | 77°F; Brookfield LVF, spindle 1 at 60 rpm |
| Viscosity — Part A | 150–300 | Pa·s | 25°C; Brookfield HBT, spindle 7 at 2.1 rad/s |
| Viscosity — Part B | 0.01–0.02 | Pa·s | 25°C; Brookfield LVF, spindle 1 at 6.3 rad/s |
| Density — Part A | 1.15 | g/mL | Component value |
| Density — Part B | 1.0 | g/mL | Component value |
| Mix ratio — Part A:Part B | 100:22 | Parts by weight | Volume measurement is not recommended for structural applications unless special precautions are used to assure the correct ratio |
| Pot life | 35 | minutes | 450 g mass at 77°F / 25°C; ASTM D2471 in a water bath |
| Glass-bead size for bondline control | 5 / 0.13 | mil / mm | Glass beads incorporated into the formulation for bondline-thickness control |
| Handling-strength time | 12 | hours | At 77°F / 25°C; support tooling or cure pressure may then be removed, but full bond strength has not been reached |
| Ambient cure schedule | 3–5 | days | 77°F / 25°C to achieve normal performance |
| Heat-cure schedule | 1 | hour | 180°F / 82°C to achieve normal performance |
| Warranty life — Part A | 1 | year | Stored below 77°F / 25°C |
| Warranty life — Part B | 1 | year | Stored below 77°F / 25°C |
Technical properties
After-processing / final-state properties
Typical cured-material and bonded-joint properties. Results remain specific to the stated substrate, surface preparation, cure, specimen geometry, conditioning, test temperature, and method.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Tensile lap shear strength | 5,470 / 37.7 | psi / MPa | ASTM D1002; tested at −67°F / −55°C after 30-minute soak; 2024-T3 clad aluminum, FPL per ASTM D2651; cured 72 hours at 77°F / 25°C under 10 psi / 0.7 bar |
| Tensile lap shear strength | 4,753 / 32.8 | psi / MPa | ASTM D1002; tested at 77°F / 25°C; 2024-T3 clad aluminum, FPL per ASTM D2651; cured 72 hours at 77°F / 25°C under 10 psi / 0.7 bar |
| Tensile lap shear strength | 934 / 6.4 | psi / MPa | ASTM D1002; tested at 180°F / 82°C; 2024-T3 clad aluminum, FPL per ASTM D2651; cured 72 hours at 77°F / 25°C under 10 psi / 0.7 bar |
| Hot/wet tensile lap shear strength | 4,757 / 32.8 | psi / MPa | ASTM D1002; tested at 77°F / 25°C after 750 hours at 160°F / 71°C and 85% RH; 2024-T3 clad aluminum, FPL; cured 72 hours at 77°F / 25°C under 10 psi / 0.7 bar |
| Tensile lap shear strength | 5,000 / 34.5 | psi / MPa | ASTM D1002; tested at 77°F / 25°C; 2024-T3 bare aluminum, PAA per ASTM D3933; cured 2 hours at 150°F / 66°C under 10 psi / 0.7 bar |
| Tensile lap shear strength | 1,000 / 6.9 | psi / MPa | ASTM D1002; tested at 180°F / 82°C; 2024-T3 bare aluminum, PAA; cured 2 hours at 150°F / 66°C under 10 psi / 0.7 bar |
| Tensile lap shear strength — control | 4,800 / 33.1 | psi / MPa | ASTM D1002; tested at 77°F / 25°C; 2024-T3 Alclad aluminum, PAA; cured 5 days at 77°F / 25°C; no exposure conditioning |
| Tensile lap shear strength — hydraulic oil exposure | 4,600 / 31.7 | psi / MPa | ASTM D1002; tested at 77°F / 25°C after 7 days in hydraulic oil at 77°F / 25°C; 2024-T3 Alclad, PAA; cured 5 days at 77°F / 25°C |
| Tensile lap shear strength — JP-4 fuel exposure | 4,700 / 32.3 | psi / MPa | ASTM D1002; tested at 77°F / 25°C after 7 days in JP-4 fuel at 77°F / 25°C; 2024-T3 Alclad, PAA; cured 5 days at 77°F / 25°C |
| Tensile lap shear strength — anti-icing fluid exposure | 4,500 / 31.3 | psi / MPa | ASTM D1002; tested at 77°F / 25°C after 7 days in anti-icing fluid at 77°F / 25°C; 2024-T3 Alclad, PAA; cured 5 days at 77°F / 25°C |
| Tensile lap shear strength — Hydrocarbon III exposure | 4,300 / 29.6 | psi / MPa | ASTM D1002; tested at 77°F / 25°C after 7 days in Hydrocarbon III at 77°F / 25°C; 2024-T3 Alclad, PAA; cured 5 days at 77°F / 25°C |
| Tensile lap shear strength — Skydrol 500 exposure | 4,600 / 31.7 | psi / MPa | ASTM D1002; tested at 77°F / 25°C after 7 days in Skydrol 500 at 77°F / 25°C; 2024-T3 Alclad, PAA; cured 5 days at 77°F / 25°C |
| Tensile lap shear strength — water exposure | 4,700 / 32.4 | psi / MPa | ASTM D1002; tested at 77°F / 25°C after 30 days in water at 77°F / 25°C; 2024-T3 Alclad, PAA; cured 5 days at 77°F / 25°C |
| Tensile lap shear strength — hot/wet exposure | 5,100 / 35.2 | psi / MPa | ASTM D1002; tested at 77°F / 25°C after 30 days at 120°F / 49°C and 98% RH; 2024-T3 Alclad, PAA; cured 5 days at 77°F / 25°C |
| Tensile lap shear strength — salt-spray exposure | 5,000 / 32.4 | psi / MPa | ASTM D1002; tested at 77°F / 25°C after 30 days in 5% NaCl salt spray at 105°F / 41°C; 2024-T3 Alclad, PAA; cured 5 days at 77°F / 25°C |
| Creep deflection | 0.00056 / 0.0142 | in / mm | Measured at 77°F / 25°C after 192 hours under a 1,600 psi / 11.0 MPa load |
| T-peel strength | 31 / 138 | lbf/in / N/25 mm | ASTM D1876; tested at −67°F / −55°C after 30-minute soak; 0.020 in / 0.51 mm 2024-T3 clad aluminum, PAA; cured 72 hours at 77°F / 25°C under 28 in-Hg / 711 mm-Hg vacuum |
| T-peel strength | 48 / 214 | lbf/in / N/25 mm | ASTM D1876; tested at 77°F / 25°C; 0.020 in / 0.51 mm 2024-T3 clad aluminum, PAA; cured 72 hours at 77°F / 25°C under 28 in-Hg / 711 mm-Hg vacuum |
| T-peel strength | 21 / 93 | lbf/in / N/25 mm | ASTM D1876; tested at −67°F / −55°C after 30-minute soak; 0.020 in / 0.51 mm 2024-T3 bare aluminum, PAA; cured 2 hours at 180°F / 82°C under 28 in-Hg / 711 mm-Hg vacuum |
| T-peel strength | 32 / 142 | lbf/in / N/25 mm | ASTM D1876; tested at 77°F / 25°C; 0.020 in / 0.51 mm 2024-T3 bare aluminum, PAA; cured 2 hours at 180°F / 82°C under 28 in-Hg / 711 mm-Hg vacuum |
| Floating roller peel strength | 94 / 418 | lbf/in / N/25 mm | ASTM D3167; tested at 77°F / 25°C; 2024-T3 bare aluminum, 0.025 in / 0.64 mm and 0.063 in / 1.6 mm adherends, PAA; cured 72 hours at 77°F / 25°C under 28 in-Hg / 711 mm-Hg vacuum |
| Service temperature | Approximately 180 / 82 | °F / °C | Defined as the temperature at which the adhesive retains 1,000 psi / 6.9 MPa by ASTM D1002 |
| Tensile strength | 4,670 / 32.2 | psi / MPa | ASTM D638; 0.125 in / 3.18 mm casting; cured 72 hours at 77°F / 25°C; tested at 77°F / 25°C |
| Tensile modulus | 334 / 2,303 | ksi / MPa | ASTM D638; 0.125 in / 3.18 mm casting; cured 72 hours at 77°F / 25°C; tested at 77°F / 25°C |
| Shear modulus | 122 / 841 | ksi / MPa | ASTM D638; cured 72 hours at 77°F / 25°C; tested at 77°F / 25°C |
| Poisson’s ratio | 0.36 | — | ASTM D638; cured 72 hours at 77°F / 25°C |
| Elongation at break | 10 | % | ASTM D638; cured 72 hours at 77°F / 25°C |
| Shore D hardness | 80 | Shore D | ASTM D2240; cured 72 hours at 77°F / 25°C; tested at 77°F / 25°C |
| Glass transition temperature — dry | 142 / 61 | °F / °C | DMTA, single cantilever; cured 72 hours at 77°F / 25°C; 5°C/min heating rate, 1 Hz, 0.1% strain; specimen 1 × 0.49 × 0.063 in / 25.4 × 12.4 × 1.6 mm |
| Glass transition temperature — wet | 147 / 64 | °F / °C | DMTA, single cantilever; cured 72 hours at 77°F / 25°C; conditioned at 160°F / 71°C and 85% RH until saturation; moisture uptake 2.5% |
| Glass transition temperature — dry | 178 / 81 | °F / °C | DMTA, single cantilever; cured 1 hour at 180°F / 82°C; 5°C/min heating rate, 1 Hz, 0.1% strain |
| Glass transition temperature — wet | 147 / 64 | °F / °C | DMTA, single cantilever; cured 1 hour at 180°F / 82°C; conditioned at 160°F / 71°C and 85% RH until saturation; moisture uptake 2.5% |
| Moisture uptake | 2.5 | % | Conditioned at 160°F / 71°C and 85% RH until saturation for wet Tg testing |
| Compressive strength | 7,500 / 51.7 | psi / MPa | ASTM D695; 0.5 in / 12.7 mm casting; tested at 77°F / 25°C |
| Compressive modulus | 245 / 1,688 | ksi / MPa | ASTM D695; 0.5 in / 12.7 mm casting; tested at 77°F / 25°C |
| Dielectric constant | 4.33 | — | ASTM D149 / D150; 0.1 kHz |
| Dielectric constant | 4.29 | — | ASTM D149 / D150; 1.0 kHz |
| Dielectric constant | 4.17 | — | ASTM D149 / D150; 10.0 kHz |
| Dissipation factor | 0.018 | — | ASTM D149 / D150; 0.1 kHz |
| Dissipation factor | 0.014 | — | ASTM D149 / D150; 1.0 kHz |
| Dissipation factor | 0.028 | — | ASTM D149 / D150; 10.0 kHz |
| Volume resistivity | 1.36 × 1014 | ohm·cm | Electrical properties tested per ASTM D149 / D150 |
| Surface resistivity | 4.94 × 1014 | ohm | Electrical properties tested per ASTM D149 / D150 |
| Thermal conductivity | 4.50 × 10−4 | cal/s·cm·°C | Bulk cured-material value; test method and additional specimen conditions are not stated in the bulletin |
