LOCTITE EA 9394S
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
- 28.9 MPa Aluminum Lap Shear
- Controlled Two-Part Processing
- Paste-Form Adhesive Application
Product Description
LOCTITE EA 9394S is a two-part, room-temperature-curing epoxy paste adhesive for structural bonding and for potting, filling, and liquid-shim applications. The thixotropic, gap-filling system uses a 100:17 Part A-to-Part B mix ratio by weight and provides a 90-minute pot life for a 450 g mass at 25 degrees C. After cure, documented mechanical data include typical lap shear strength of 28.9 MPa at 25 degrees C and 8.3 MPa at 177 degrees C on phosphoric-acid-anodized 2024-T3 aluminum. Normal cure is 3 to 5 days at 25 degrees C, while small masses may be accelerated, including 1 hour at 66 degrees C.
Key features
- Product form: Two-part structural epoxy paste adhesive with thixotropic, gap-filling behavior.
- Mix ratio: 100 parts Part A to 17 parts Part B by weight.
- Pot life: 90 minutes for a 450 g mass at 25 degrees C, tested by ASTM D2471.
- Ambient cure: 3 to 5 days at 25 degrees C for normal performance.
- Accelerated cure: 1 hour at 66 degrees C for small masses.
- High-temperature strength: Typical lap shear strength of 8.3 MPa at 177 degrees C under the documented ASTM D1002 test configuration.
Applications / Suitable for
- Structural bonding in aerospace assembly contexts.
- Potting and localized filling where a thixotropic paste is appropriate.
- Liquid-shim applications requiring a cured gap-filling material.
TDS, SDS & Technical Documents
Technical Specifications
No specifications available.
Additional Information
LOCTITE EA 9394S
LOCTITE EA 9394S is a two-part structural epoxy paste adhesive for room-temperature cure and demanding bonded assemblies. Its thixotropic, gap-filling form supports structural bonding, potting, filling, and liquid-shim applications, while documented mechanical data show useful strength retention from subzero testing through 177 degrees C on prepared 2024-T3 aluminum.
LOCTITE EA 9394S two-part epoxy paste adhesive.
As-supplied properties
Values are source-reported and typical where indicated. Preserve component identity, ratio basis, temperature, mass, and test context during evaluation.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Product form | Two-part epoxy paste adhesive | N/A | Part A and Part B are mixed immediately before application. |
| Part A appearance | Gray paste | N/A | As supplied. |
| Part B appearance | Black gel | N/A | As supplied. |
| Mixed color | Gray | N/A | After complete mixing. |
| Mix ratio | 100:17 | By weight | Part A to Part B. Volume measurement is not recommended for structural applications unless ratio control is assured. |
| Pot life | 90 | Minutes | 450 g mass at 25 degrees C; ASTM D2471 in a water bath. |
| Part A density | 1.49 | g/mL | As-supplied component density. |
| Part B density | 1.0 | g/mL | As-supplied component density. |
| Mixed density | 1.36 | g/mL | Mixed adhesive. |
| Shelf life | 1 | Year | Part A and Part B stored below 25 degrees C. |
Mixing, application, and cure
Control the mix ratio, mixed mass, surface preparation, assembly support, and cure schedule. Pot life and exotherm are mass- and temperature-dependent, and handling strength is not equivalent to full cure.
Store components below 25 degrees C to support the stated one-year shelf life. Keep containers tightly closed in cool, well-ventilated storage and away from heat or incompatible materials. For industrial use only; use adequate ventilation and appropriate personal protective equipment based on the workplace assessment. Review the current safety data sheets before use.
Dual-cartridge dispensing guidance
Cured material properties
The values below are typical bulk-resin data and should not be treated as guaranteed design allowables or complete bonded-assembly performance.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Tensile strength | 46.0 | MPa | Typical bulk-resin result at 25 degrees C; ASTM D638; 3.18 mm casting. |
| Tensile modulus | 4,237 | MPa | Typical bulk-resin result at 25 degrees C; ASTM D638. |
| Shear modulus, dry | 1,461 | MPa | Typical bulk-resin result at 25 degrees C. |
| Shear modulus, wet | 1,027 | MPa | Typical bulk-resin result at 25 degrees C. |
| Elongation at break | 1.66 | % | Typical bulk-resin result at 25 degrees C; ASTM D638. |
| Shore D hardness | 88 | Shore D | Typical value at 25 degrees C. |
| Glass transition temperature, dry | 78 | degrees C | Typical bulk-resin value. |
| Glass transition temperature, wet | 68 | degrees C | Typical bulk-resin value. |
| Compressive strength | 68.9 | MPa | Typical result at 25 degrees C; ASTM D695; specified rectangular specimen geometry. |
| Dielectric constant | 7.72 / 7.51 / 7.20 | N/A | At 0.1 / 1.0 / 10.0 kHz; ASTM D149 and D150. |
| Dissipation factor | 0.017 / 0.022 / 0.033 | N/A | At 0.1 / 1.0 / 10.0 kHz; ASTM D149 and D150. |
| Thermal conductivity | 0.331 | W/(m K) | Typical bulk-resin value. |
| Volume resistivity | 4.05 x 1013 | ohm-cm | Typical bulk-resin value. |
| Surface resistivity | 4.60 x 1013 | ohm | Typical bulk-resin value. |
| Coefficient of thermal expansion | 55.6 at 40 degrees C; 80.6 at 100 degrees C | um/m degrees C | Typical bulk-resin values at the stated temperatures. |
Bond strength and exposure evidence
These typical results are specific to the stated substrates, surface preparation, cure, exposure, and test methods. They support product evaluation but are not universal joint-strength guarantees.
Applications and use contexts
Documented uses include structural bonding, potting, filling, and liquid-shim applications. Final suitability depends on the actual substrates, joint or cavity geometry, surface preparation, mixed mass, cure, loading, and service environment.
Evaluate LOCTITE EA 9394S with Krayden
Krayden can help review substrate preparation, mix and dispense requirements, cure schedules, bondline or gap geometry, and the relevance of the published mechanical data to your application. Contact the team to discuss product selection, samples, or a technical evaluation plan.
