Product Introduction
3M™ Scotch-Weld™ Composite Surfacing Film AF 163-2 is a family of thermosetting modified epoxy adhesives in film form, engineered for long-term durability in metal and composite structures. It is ideal for solid panel and honeycomb sandwich construction in critical aerospace applications, delivering high fracture toughness and exceptional peel strength. While designed for a standard 250°F (120°C) cure, it offers the flexibility to be cured at temperatures from 180°F (80°C) to 300°F (150°C) to suit various manufacturing processes. This film provides excellent shop handling properties, outstanding pre-bond humidity performance on composite substrates, and is available in an unsupported version for reticulation. Once cured, it maintains high bond strength from -67°F to 250°F (-55°C to 121°C).
3M™ AF 163-2 Features
- Designed for 250°F (120°C) cure, with flexibility to cure between 180°F and 300°F (80°C to 150°C)
- Excellent shop handling characteristics for easy application
- Superior pre-bond humidity resistance on composite substrates
- Available in both supported and unsupported versions (for reticulation)
- High fracture toughness and exceptional peel strength for demanding applications
- Compatible with multiple substrates and primers for versatility in bonding operations
- Provides durable bonds from -67°F to 250°F (-55°C to 121°C)
3M™ AF 163-2 Applications
- Structural bonding of composites, metals, and honeycomb sandwich panels
- Composite surfacing for aerospace components
- Applications requiring high peel strength and fracture toughness
- Bonding operations needing strong pre-bond humidity performance
- Projects utilizing reticulation processes with unsupported adhesive film
About Prostech
Prostech Philippines is a one-stop solution provider for specialty materials and equipment across electronics manufacturing, from PCBA to final assembly. Our core material and equipment solutions include:
- PCB Assembly Materials
- Cleaning & Degreaser
- Circuit Board Protection
- Thermal Management Solutions
- EMI Shielding
- General Assembly Adhesives
- Elastomeric Materials
- Process Equipment: Potting & Coating Systems, UV/ Heat Curing, Plasma Treatment, Tape placement automation, and cleaning machines
Technical Added Value to customer
Prostech offers customized material and process equipment solutions with engineering support throughout R&D, production process optimization, and performance validation. Our in-house lab located in Alabang, Muntinlupa is equipped to conduct electronics material testing, application simulation, and adhesive validation, helping customers reduce the need for onsite trials and accelerate implementation.
International Supply Chain Advantage
Regional warehouse hubs across Vietnam, Singapore, Malaysia, and the Philippines ensure cross-border reliable supply. In Philippines PEZA-bonded warehouse located at Lima Industrial Park, Batangas enables Prostech to provide responsive, demand-based delivery and significantly shortens standard lead time for Philippines customers.
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| Property | Value |
|---|---|
| Adhesive Type | Epoxy |
| Application | Bonding |
| Cure Rate | 90 min |
| Curing Temperature (Celsius) | 121 ℃ |
| Curing Temperature (Fahrenheit) | 250 ℉ |
| Maximum Operating Temperature (Celsius) | 121 ℃ |
| Maximum Operating Temperature (Fahrenheit) | 250 ℉ |
| Minimum Operating Temperature (Celsius) | -55 ℃ |
| Minimum Operating Temperature (Fahrenheit) | -67 ℉ |
| Nominal Weight (Imperial) | 0.045 lb/ft², 0.06 lb/ft² |
| Product Color | Red |
| Product Form | Roll |
| Storage Environment | Freezer Storage |
| Substrate | Composite, Metal |



