LOCTITE EA 9394C-2
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
- 1-Hour 204 deg C Cure
- Extended Working Window for Controlled Assembly Operations
- Qualified to MMM-A-132 Type Ii
Product Description
LOCTITE EA 9394C-2 AERO is a two-component, elevated-temperature-cure structural epoxy paste adhesive for aerospace bonding. The system combines a gray Part A with a purple-dark green Part B at a 100:20 mix ratio by weight. A 7-hour pot life at 25°C for a 450 g mass provides an extended working window for controlled assembly, while a 1-hour cure above 93°C develops normal performance. On phosphoric-acid-anodized 2024-T3 aluminum, typical tensile lap shear is 34.5 MPa at 25°C and 11.7 MPa at 204°C. The adhesive is qualified to MMM-A-132 Type II and has an approximate service-temperature criterion of 232°C based on retaining 6.9 MPa lap shear per ASTM D1002.
Key features
- Extended pot life: 7 hours at 25°C for a 450 g mixed mass, tested by ASTM D2471.
- Controlled two-part mixing: 100:20 Part A-to-Part B ratio by weight.
- Elevated-temperature cure: 1 hour above 93°C to achieve normal performance.
- High-temperature lap shear: typical 11.7 MPa at 204°C on prepared 2024-T3 aluminum after the stated cure.
- Thermal-aging evidence: typical 16.2 MPa lap shear after 12,000 hours at 177°C, tested at 177°C.
- Qualification: MMM-A-132 Type II.
TDS, SDS & Technical Documents
Technical Specifications
No specifications available.
Additional Information
LOCTITE EA 9394C-2 AERO
LOCTITE EA 9394C-2 AERO is a two-part structural epoxy paste designed for elevated-temperature cure and high-temperature service in aerospace bonding. It combines an extended pot life with a non-aromatic amine curing agent and retains measurable lap shear strength at temperatures above 204°C under the stated prepared-aluminum test configuration.
LOCTITE EA 9394C-2 AERO two-component adhesive system.
Uncured and component properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Part A color | Gray | — | As supplied |
| Part B color | Purple-dark green | — | As supplied |
| Part A viscosity | 650 | Pa·s | 25°C; Brookfield HBT, spindle 7 at 2.09 rad/s |
| Part B viscosity | 0.04 | Pa·s | 25°C; Brookfield LVF, spindle 1 at 3.17 rad/s |
| Part A density | 1.45 | g/mL | As supplied |
| Part B density | 1.00 | g/mL | As supplied |
Mixing, application, and cure
Accurate weighing, complete mixing, controlled batch size, prepared bonding surfaces, and elevated-temperature cure are required to develop the stated performance.
Store Part A at or below -18°C; refrigerated storage is recommended to maintain product quality. Store Part B at or below 25°C in a cool, well-ventilated area with the container tightly closed. Follow current container labels for shelf-life and component-specific handling requirements.
Cured properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Ultimate compressive strength at 25°C | 32,000 / 220.7 | psi / MPa | ASTM D695; cylindrical specimen 35.6 mm tall × 14 mm diameter; cured 1 hour at 93°C |
| Ultimate compressive strength at 121°C | 17,000 / 117.2 | psi / MPa | ASTM D695; cylindrical specimen 35.6 mm tall × 14 mm diameter; cured 1 hour at 93°C |
Performance evidence
The following typical results preserve the tested substrate, surface preparation, cure, temperature, and exposure conditions needed to evaluate the adhesive.
| Test temperature (°C) | Typical strength (psi) | Typical strength (MPa) |
|---|---|---|
| -55 | 3,500 | 24.1 |
| 25 | 5,000 | 34.5 |
| 82 | 4,000 | 27.6 |
| 121 | 3,200 | 22.0 |
| 149 | 3,000 | 20.7 |
| 177 | 2,500 | 17.2 |
| 204 | 1,700 | 11.7 |
| 232 | 1,200 | 8.3 |
| 260 | 800 | 5.5 |
| Thermal-aging exposure | Typical strength (psi) | Typical strength (MPa) |
|---|---|---|
| No exposure | 2,443 | 16.8 |
| 1,000 hours | 2,784 | 19.2 |
| 2,000 hours | 2,589 | 17.9 |
| 5,000 hours | 2,613 | 18.0 |
| 12,000 hours | 2,355 | 16.2 |
| Conditioning | Typical strength (psi) | Typical strength (MPa) |
|---|---|---|
| 48 hours at 25°C | 5,490 | 37.9 |
| 10-minute soak at 149°C | 3,100 | 21.4 |
| 192 hours at 149°C | 3,230 | 22.3 |
| 10-minute soak at -55°C | 3,880 | 26.8 |
| MIL-H-83282 hydraulic oil, 7 days at 25°C | 5,640 | 38.9 |
| JP-4 jet fuel, 7 days at 25°C | 5,640 | 38.9 |
| 30 days at 49°C and 95–100% RH | 5,260 | 36.3 |
Additional results: fatigue strength of 750 psi (52 bar) for 106 cycles at 25°C; creep rupture under 1,600 psi (110 bar) for 192 hours was less than 0.1 mil at both 25°C and 149°C.
Evaluate LOCTITE EA 9394C-2 AERO for your bonding process
Contact Krayden to discuss substrate preparation, mix and batch controls, cure requirements, temperature-dependent strength data, or qualification considerations for your structural bonding application.
