Product Introduction of 3M Scotch-Weld Core Splice Adhesive Film AF 3074 FST
3M™ Scotch-Weld™ Core Splice Adhesive Film AF 3074 FST is a thermally expanding epoxy adhesive film designed for honeycomb core splicing, reinforcement, and edge filling processes typically used in aircraft part fabrication. It offers reliable performance with easy handling and versatility in demanding aerospace applications.
Key Features of 3M Scotch-Weld Core Splice Adhesive Film AF 3074 FST
- Reliable expansion ratio of up to 230% (>3x the thickness of the uncured film)
- Wide in-service temperature range
- FST tested according to FAR/JAR/CS 25.853(a) App F, part I(a)(1)(ii) and ABD0031
- Easy to handle, cut, and reposition during lay up process
- Curable with structural adhesive films and prepregs in 120 °C (248 °F) to 180 °C (356 °F) cure cycles
- Long shop life (up to 30 days storage at room temperature outside of the protective bag)
- Suitable for storage at room temperature for 6 months from date of manufacturing, when stored in the sealed protective bag
Key Applications
- Honeycomb core splicing
- Core reinforcement
- Edge filling in aircraft part fabrication
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| Adhesive Type | Epoxy |
| Maximum Cure Conditions (Celsius) | 180 °C |
| Maximum Cure Conditions (Fahrenheit) | 350 °F |
| Maximum Operating Temperature (Celsius) | 135 °C |
| Maximum Operating Temperature (Fahrenheit) | 275 °F |
| Minimum Cure Conditions (Celsius) | 120 °C |
| Minimum Cure Conditions (Fahrenheit) | 250 °F |
| Minimum Operating Temperature (Celsius) | -67 °C |
| Minimum Operating Temperature (Fahrenheit) | -55 °F |
