Product Introduction
3M™ Scotch-Weld™ Composite Surfacing Film AF 325 LS Blue is a thermosetting epoxy surfacing film developed for advanced composite applications. This product delivers a smooth, void-free surface with minimal pinholes, effectively reducing the need for subsequent surface filling, fairing, sanding, and pre-paint preparation. It is available in both white and blue to provide color contrast with the underlying composite prepreg, offering versatility for different manufacturing needs. In addition, this film incorporates copper mesh for lightning strike protection, making it ideal for critical aerospace applications.
AF 325 LS Blue offers excellent operational performance across a broad temperature range, from -67°F (-55°C) to 300°F (149°C). It is co-cure compatible with most epoxy composite prepreg systems at both 250°F (121°C) and 350°F (177°C). The low-density formulation supports easier surface preparation and enhances overall process efficiency. The inclusion of copper mesh provides an added layer of protection against lightning strikes while maintaining a smooth surface finish with minimal surface imperfections.
3M™ Scotch-Weld™ Composite Surfacing Film AF 325 LS Blue Features
- Excellent for surfacing composite parts
- Available in both white and blue to provide color contrast to underlying composite prepreg
- Co-cure compatible with most epoxy composite prepreg systems
- Provides a smooth surface with minimal pinholes and other surface imperfections
- Reduces the need for subsequent surface filling, fairing, and sanding operations
- Low density formulation aids in pre-paint surface preparation
- Operational performance range from -67°F (-55°C) to 300°F (149°C)
- Available with copper mesh for lightning strike protection
3M™ Scotch-Weld™ Composite Surfacing Film AF 325 LS Blue Applications
- Surfacing aerospace composite structures requiring lightning strike protection
- Applications demanding smooth, pinhole-free composite finishes
- Use with composite prepreg systems requiring co-curing at 250°F (121°C) or 350°F (177°C)
- Pre-paint surface preparation for aerospace components
- Composite manufacturing where minimal post-cure surface preparation is desired
About Prostech
Prostech offers specialty materials (adhesives, tapes, thermal interface materials, insulating materials, sealants, PCB protection materials, …) along with manufacturing solutions. We proudly serve a wide range of industries and are an authorized distributor for leading global manufacturers of industrial materials and equipment. Our product range is designed to deliver customized solutions that address each customer’s unique needs.
With years of experience and a successful project history, we are confident in our ability to provide comprehensive material solutions. These solutions effectively tackle the challenges manufacturers face. To explore our full product catalog, simply click here. Our dedicated team is ready to assist with:
- Provide quotation, sample, TDS/MSDS, and technical consultation
- Testing sample quality and verifying product compatibility in our laboratory
- Customizing material formulas for special applications
- Adapting product sizes, quantities, and packaging to meet specific needs
- Offering expert advice on suitable equipment and automation processes
- Delivering technical training and on-site support for optimal product use
Moreover, Prostech ensures the safe and accurate global delivery of all materials, including “dangerous goods”, in compliance with legal regulations. For personalized technical support or to receive a quotation, please contact us today.
| Property | Value |
|---|---|
| Adhesive Type | Epoxy |
| Brands | Scotch-Weld™ |
| Cure Rate | 1 hr |
| Factory ISO Certification | No ISO Certification information available |
| Maximum Cure Conditions (Celsius) | 177 ℃ |
| Maximum Cure Conditions (Fahrenheit) | 350 ℉ |
| Maximum Operating Temperature (Celsius) | 149 ℃ |
| Maximum Operating Temperature (Fahrenheit) | 300 ℉ |
| Minimum Cure Conditions (Celsius) | 121 ℃ |
| Minimum Cure Conditions (Fahrenheit) | 250 ℉ |
| Minimum Operating Temperature (Celsius) | -55 ℃ |
| Minimum Operating Temperature (Fahrenheit) | -67 ℉ |
| Nominal Weight (Imperial) | 0.064 lb/ft² |
| Product Color | Blue |
| Product Form | Roll |
| Storage Environment | Freezer Storage |
| Overall Length (Imperial) | 50 yd |
| Overall Length (Metric) | 45.7 m |
| Overall Width (Imperial) | 35 in |
| Overall Width (Metric) | 1 m |
