Technical Product Bulletin
NICKEL FILLED ELECTRICALLY CONDUCTIVE EPOXY ADHESIVE
PRODUCT DESCRIPTION
AA-DUCT 903 is an epoxy adhesive and coating formulation based on nickel. This epoxy nickel formulation offers the maximum continuity of conductivity with an electrical resistivity value of less than 3.8x10⁻² ohm-cm.
AA-DUCT 903 is recommended for electronic bonding and sealing applications that require both fine electrical and mechanical properties.
AA-DUCT 903 has been used extensively in such diversified applications as microwave EMI and RFI shielding, in the assembly or repair of printed circuit boards, wave guides, electronic modules, flat cable, high-frequency shields, connections, circuitry, and as a cold solder for high-sensitive components where hot-soldering is impractical.
GENERAL PROPERTIES
| Appearance | Grey |
| Cure Type | Heat cure or Room temperature |
| Benefits |
|
| Mix Ratio by weight | 100:5 Resin to Hardener |
| Substrates | Excellent choice for aluminum, copper, magnesium, steel, bronze, nickel, kovar, ceramic, glass, phenolic, and G-10 epoxy glass boards |
| Minimum Bond Line Thickness | 1 mm |
| Glass Transition Temp, Tg | 50°C |
| Typical Applications | Electrical, conductive, EMI/RFI shielding, circuitry, printed circuit board, and electronics repair |
UNCURED PROPERTIES
| Viscosity @ 25 °C, cps | Paste |
| Specific Gravity, mixed | 2.79 |
| Reactive solids contents, % | 100 |
| Pot Life | 1 hour |
| Shelf Life | 1 year |
CURE SCHEDULE
| 15 minutes | 100°C (212°F) |
| 45 minutes | 50°C (122°F) |
| 24 hours | 25°C (77°F) |
CURED PROPERTIES
| Hardness, Shore D | 85 |
| Shrinkage, linear in/in | 0.003 |
| Tensile Strength, psi | 9500 |
| Volume Resistivity, ohm·cm | < 0.038 |
| Compressive Strength, psi | 14,000 |
| NASA Outgassing | Passed (TML: 0.65%, WVR: 0.15%, CVCM: 0.00%) |
THERMAL PROPERTIES
| Thermal Conductivity, btu/hr/ft²/°F/in | 9.4 |
| Thermal Expansion Coefficient, cm/cm/°C × 10⁻⁵ | 1.5 |
| Heat Distortion, °C | 95 |
| Operating Temperature Range, °C | -50 to +170 |
GENERAL INFORMATION
For safe handling information on this product, consult the Safety Data Sheet, (SDS).
HOW TO USE
- Carefully clean and dry all surfaces to be bonded.
- Apply AA-DUCT 903 completely mixed adhesive to the prepared surfaces, and gently press these surfaces together. Contact pressure is adequate for strong, reliable bonds; however, maintain contact until adhesive is completely cured.
- Some separation of components is common during shipping and storage. For this reason, it is recommended that the contents of the shipping container be thoroughly mixed prior to use.
- Some ingredients in this formulation provided may crystallize when subjected to low temperature storage. A gentle warming cycle of 52°C for 30 minutes prior to mixing components may be necessary. Crystallized epoxy components do not react as well as liquid components and should be re-dissolved prior to use for best results.
AVAILABILITY
This epoxy can be supplied in various different packages.
Data Sheets: TDS | MSDS available upon request.
