3M™ AEROSPACE PRODUCTS
Essential 3M™ Products for Aerospace Manufacturing
3M™ brings more than 100 years of science to the air with a portfolio of innovative Aerospace products. From adhesives to abrasives to films, surface modifications and more, 3M has created solutions to help Aerospace manufacturers solve tough problems. Extending that innovation into the supply chain, Composites One offers a premiere distribution network that supports Aerospace OEMs with reduced inventory costs and reliable manufacturing continuity. Manufacturers choose Composites One for the broadest range of innovative and essential 3M™ composite products, dependable service, and unsurpassed technical support.
Structural 3M™ Adhesive Films for Advanced Aerospace Bonding
3M™ Structural Adhesive Films are engineered to create strong, lightweight bonds that enhance aircraft performance while reducing the need for mechanical fasteners. These thermosetting modified epoxy films bond metals, composites, and honeycomb structures, maintaining high strength and durability under demanding Aerospace conditions. Available in multiple weights and thicknesses, they balance performance and weight efficiency while streamlining production through clean, no-mix processing and cure flexibility from 180°F to 350°F.
By enabling the use of advanced composites in place of heavier metals, adhesive film bonding has transformed aircraft construction. 3M™ adhesive film technologies deliver structural integrity, environmental resistance, and erosion performance where metal-to-composite bonding is critical—helping manufacturers improve efficiency, reduce weight, and achieve long-term reliability in Aerospace structures. This portfolio of adhesive films is widely trusted across the Aerospace industry for its consistent performance, long-term durability, and proven reliability in critical structural applications.
3M™ Scotch-Weld™ ADHESIVE FILMS
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POPULAR SPECS:
• BMS 5-101 TY II GR10
• BMS 5-129 TY 4 CL IID GR10
• 299-947-320 TY I
• 299-947-121 TY I
• SS8612 TY IV CL 2 -006F/-020F/029F3M™ Scotch-Weld™ Structural Adhesive Film AF 163-2 represents a family of thermosetting modified epoxy adhesives engineered for structural bonding in both solid panel and honeycomb sandwich constructions. Within this family, 3M™ AF 163-2K features a knit supporting carrier that enhances handling and ensures uniform bondline thickness. These films deliver outstanding fracture toughness, peel strength, and moisture resistance—critical properties for achieving long-term durability in demanding environments.
Designed for use with both metal and composite substrates, AF 163-2 adhesives are capable of low-pressure bonding and vacuum curing, maintaining reliable performance across temperatures ranging from -67°F to 250°F. Their combination of strength, environmental resistance, and processing versatility makes the AF 163-2 family a trusted solution for Aerospace manufacturers requiring high-performance structural bonding.
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POPULAR SPEC:
• A50TF272-S7 CL C
3M™ Scotch-Weld™ Structural Adhesive Film AF 191K .08 is a thermosetting modified epoxy adhesive engineered for demanding Aerospace applications that require high structural integrity and performance at elevated temperatures. Part of the AF 191 family, it is designed for bonding composites, metal-to-metal, and metal-to-honeycomb components where exceptional strength and peel performance at 350°F (177°C) are required. Its unique toughening system provides outstanding shear and fracture toughness, ensuring long-term durability under the extreme thermal and mechanical stresses encountered in flight.Supplied as a nylon knit film, AF 191K .08 offers processing versatility with cure flexibility from 275°F (135°C) to 350°F (175°C) and is also available in versions suitable for lightning strike and composite surfacing applications. These characteristics make it a proven, high-performance adhesive solution for critical Aerospace structures and assemblies.
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POPULAR SPECS:
• A50TF218-S6 CL D
• PWA 464
• MSRR1038 Issue 6, Material 303M™ Scotch-Weld™ Structural Adhesive Film AF 3109-2K .085 is a thermosetting modified epoxy adhesive film designed for demanding Aerospace applications requiring reliable bonding of honeycomb and metal-to-metal components. Part of the AF 3109 family, this knit scrim film delivers high strength and durability at elevated temperatures up to 300°F (149°C), making it well-suited for critical aircraft structures and assemblies. It provides excellent performance in honeycomb sandwich applications, along with improved resistance to high-moisture pre-cure conditions for greater process reliability.
Engineered for low-pressure curing with minimal volatile by-products, AF 3109-2K .085 ensures clean, consistent bonds and stable performance across a range of production environments. These attributes make it a dependable, high-performance adhesive solution for Aerospace manufacturers focused on precision, consistency, and long-term structural integrity.
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POPULAR SPECS:
• BMS 5-101 TY II GR 5
• BMS 5-129 TY 4 CL IID GR 5
• 299-947-320 TY VII3M™ Scotch-Weld™ Structural Adhesive Film AF 163-3M .03 is a thermosetting modified epoxy adhesive designed for Aerospace applications requiring strong, durable bonds in both solid panel and honeycomb sandwich constructions. Part of the AF 163 family, this higher-tack version of AF 163-2 is supplied with a non-woven matte carrier for enhanced handling and positioning during layup.
It delivers high bond strength across temperatures from -67°F to 250°F, with excellent fracture toughness, peel strength, and moisture resistance before and after curing. AF 163-3M .03 is capable of low-pressure bonding and vacuum curing, with a short 90-minute cure time at 225°F, making it well-suited for efficient Aerospace manufacturing processes. The adhesive’s X-ray opacity allows for non-destructive inspection of bonded assemblies, while its excellent shop open time and long shelf-life further support consistent, high-quality production in demanding Aerospace environments.
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POPULAR SPECS:
• BMS 5-101 TY II GR 15
• A50TF197-S6 CL B
• MS-556 TY II3M™ Scotch-Weld™ Structural Adhesive Film AF 163-2K .085 is a knit supporting carrier. This thermosetting, modified epoxy structural adhesive is designed for both solid panel and honeycomb sandwich constructions.
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POPULAR SPECS:
• BMS 5-101 TY II GR 5
• BMS 5-129 TY 4 CL IID GR 5
• SS8612 TY IV CL 1 -005D or -014D3M™ Scotch-Weld™ Structural Adhesive Film AF 163-2OST .03 is a one-sided tack, thermosetting, modified epoxy structural adhesive, designed to facilitate the removal of air from large area solid panel construction.
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POPULAR SPECS:
• BMS 5-101 TY II GR 10
• BMS 5-129 TY 4 CL IID GR 10
• DMS 2169 TY 2 CL 2 GR A3M™ Scotch-Weld™ Structural Adhesive Film AF 163-2OST .06 is a one-sided tack, thermosetting, modified epoxy structural adhesive, designed to facilitate the removal of air from large area solid panel construction.
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POPULAR SPECS:
• BMS 5-101 TY IV GR 5
• A50TF197-S7
• 299-947-320 TY IV3M™ Scotch-Weld™ Structural Adhesive Film AF 163-2U is an unsupported, thermosetting, modified epoxy structural adhesive film designed for both solid panel and honeycomb sandwich constructions.
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POPULAR SPECS:
• 299-947-320 TY III
• 299-947-121 TY II
• GMS 4301 TY II, CL II, Product B3M™ Scotch-Weld™ Structural Adhesive Film AF 163-2U .06 is an unsupported, thermosetting, modified epoxy structural adhesive film designed for both solid panel and honeycomb sandwich constructions.
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POPULAR SPECS:
• BMS 5-42 TY II GR A
• SS8606 REV. 4
• DMS1557, TY 13M™ Scotch-Weld™ Structural Adhesive Film AF 30 10MIL is an unsupported, thermosetting film adhesive, developed for structural bonding of metals and high strength plastic laminates (epoxy and phenolic).
Some of its advantages include:
• High shear strength
• High peel strength
• Excellent flexibility and toughness
• Can be pressure, heat or solvent tacked in position
• Excellent retention of strength after aging in many environments
• Excellent adhesion to most metals including aluminum, titanium, stainless steel, cadmium, nickel, brass & others (using high pressure)
• Extremely low flow
Composites One Technical Support for 3M™ Structural Adhesive Film
Partnering with Composites One for 3M™ Structural Adhesive Films means working with a trusted distributor that understands the complexities of composite materials used in Aerospace manufacturing. As an authorized supplier, Composites One provides dependable access to high-performance 3M™ adhesive film technologies—supported by responsive technical expertise, optimized logistics, and a nationwide network of AS9120B-certified distribution centers.
Our Team is experienced in the precision and traceability required for Aerospace bonding applications and ensures materials are stored, handled, and delivered in accordance with the specification. From product selection through process optimization, Composites One delivers consistent, compliant, and technically sound support that helps Aerospace manufacturers maintain quality, reduce downtime, and achieve the highest standards of performance and safety.
3M™ Scotch-Weld™ Adhesive Film for Aerospace Manufacturing from Composites One
As a leader in Aerospace composites distribution, Composites One supplies a full range of 3M™ film adhesives engineered for high-strength bonding, including epoxy film adhesive and composite adhesive solutions. These 3M™ Scotch-Weld™ film adhesives support bonding applications across metal, honeycomb, and composite structures, delivering reliable film adhesive epoxy performance for both primary and secondary Aerospace assemblies. Whether customers require 3M™ film adhesive, structural bonding films, or specific grades such as AF 163-2K, AF 191K, or AF 3109-2K, Composites One provides compliant supply, technical expertise, and consistent delivery to support advanced Aerospace manufacturing.
3M™ Surface Pre-Treatment for Aerospace Bonding
3M™ Surface Pre-Treatment for Aerospace manufacturing such as AC-130-2 is a high-performance, water-based solution gelation system designed to enhance adhesive bonding on aluminum alloys, steel, titanium, and composite surfaces. This non-chromated pre-treatment streamlines surface preparation by eliminating scrubbing, rinsing, and hazardous chromates, significantly reducing labor time, water usage, and overall process cost. As an effective alternative to traditional methods such as phosphoric acid anodizing, grit blast silane, and other hazardous etching processes, AC-130-2 delivers equivalent adhesion performance with a more sustainable, field-friendly approach. Its compatibility with brush, spray, dip, or wipe application, combined with ambient-temperature curing, supports both production environments and repairs. By providing consistent adhesion results, reduced hazardous waste, and faster process flow, this innovative 3M™ surface pre-treatment helps Aerospace manufacturers improve efficiency, meet environmental requirements, and maintain high-quality bonding performance.
3M™ PRE-TREATMENTS
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POPULAR SPECS:
• BMS 5-162 TY 1 Form 2S
• BMS 10-128 TY 1 CL A GR A
• NRM 1-7 REV. C3M™ Surface Pre-Treatment AC-130-2 as a high-performance, water-based solution gelation (sol-gel) system to improve adhesive bonding of metal and composite surfaces. This high-performance, non-chromated pre-treatment is ideal for aluminum alloys, steel, titanium and composites.
• Helps reduces labor time and water usage; no scrubbing or rinsing required• Eliminates chromates from surface treatment process
• Compatible with existing application techniques; brush, spray or dip application available
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POPULAR SPECS:
• BMS 5-162 TY 1 Form 2S
• BMS 10-128 TY 1 CL A GR A
• NRM 1-7 REV. C3M™ Surface Pre-Treatment AC-130-2 as a high-performance, water-based solution gelation (sol-gel) system to improve adhesive bonding of metal and composite surfaces. This high-performance, non-chromated pre-treatment is ideal for aluminum alloys, steel, titanium and composites.
• Helps reduces labor time and water usage; no scrubbing or rinsing required• Eliminates chromates from surface treatment process
• Compatible with existing application techniques; brush, spray or dip application available
Other 3M™ Adhesives used in Aerospace Manufacturing
3M™ offers a comprehensive portfolio of structural adhesives, primers, and core splice solutions engineered to meet the rigorous demands of Aerospace composite manufacturing. This includes thermally expanding core splice films for bonding and reinforcing honeycomb structures, corrosion-inhibiting primers that enhance film adhesive performance and protect treated substrates, and sprayable structural adhesives designed for nacelles and other metal-to-metal or metal-to-honeycomb assemblies. 3M™ also supplies high-strength epoxy and urethane adhesives used for flexible bonding, composite edge sealing, and replacing mechanical fasteners in weight-sensitive designs. Together, these technologies support durable, reliable, and efficient bonding across a wide range of aircraft structures and manufacturing processes.
All product information per 3M™ Technical Data Sheets.
Explore Other Aerospace composite materials.
3M™ AEROSPACE ADHESIVES (Core Splice, Structural Primers, Epoxy, Urethane)
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POPULAR SPECS:
• A50TF103-S8
• STM 30-301 TY IIIB
3M™ Scotch-Weld™ Structural Core Splice Film AF 3024 is a low-density, thermally expanding adhesive film designed for filling gaps, reinforcing, and splicing honeycomb core in Aerospace structures. Engineered with a 250% expansion rate, it can effectively join significantly mismatched honeycomb surfaces, ensuring strong and consistent core splicing. AF 3024 offers variable curing temperatures from 250°F (121°C) to 350°F (176°C) to help streamline production, and is qualified to multiple Aerospace OEM specifications, making it a reliable solution for demanding core bonding applications. -
POPULAR SPECS:
• 299-947-320, CL I
• 299-947-121 CL III
• STM 30-102 TY II, GR A
3M™ Scotch-Weld™ Structural Adhesives Primer EC-3924B is a corrosion inhibiting adhesive primer. This epoxy based, synthetic resin primer provides a high degree of protection against corrosive environments both inside and outside the adhesive bondline and is formulated for optimal performance when used with 250°F curable 3M™ Scotch-Weld™ Structural Adhesive Films.When cured, EC-3924B promotes long-term durability for bonded joints by creating the interface between the adhesive and the metal. This product can be spray, brush or roller applied to meet a wide variety of process requirements.
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POPULAR SPEC:
• A15B82-S33M™ Scotch-Weld™ Structural Adhesive EC-3964 is a sprayable solution version of 3M™ Structural Adhesive Film AF 147. It is designed to bond screen-in-sound suppression panels on aircraft engine nacelles and offers outstanding performance once cured in metal to metal and metal to honeycomb strength over a temperature range of -67 to 300°F (-55 to 150°C). Designed for 350°F (175°C) cure and can be sprayed on screen without filling holes.
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POPULAR SPECS:
• A50TF276-S2
• SS8612 -012
• 299-947-104 CL I3M™ Scotch-Weld™ Structural Adhesive Primer EC-3917 is a heat-curing, corrosion-inhibiting primer designed to enhance the performance of 3M™ Scotch-Weld™ epoxy-based film adhesives in Aerospace bonding applications. Formulated with corrosion-inhibitive pigments, EC-3917 provides durable protection against salt spray, high humidity, common aircraft fluids, and long-term environmental exposure. Its sprayable consistency enables high transfer efficiency with minimal overspray, while the fast flash-off allows for efficient application with no wait time between passes.
EC-3917 promotes complete wetting of the adhesive film to the substrate, improving durability and mechanical performance of bonded joints. It can be co-cured with epoxy adhesive films at either 250°F or 350°F, offering flexibility for different process requirements and reducing inventory complexity. Once cured, the primer forms a stable, solvent-resistant coating that protects etched and anodized substrates during storage and throughout the bonding process. With excellent corrosion protection, robust hot/wet durability, and versatile application options including spray, brush, or roller, EC-3917 supports reliable, long-lasting structural bonds in demanding Aerospace environments.
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POPULAR SPECS:
• BMS 5-92 TY I CL 4
• IPS10-07-004-01, ISSUE 6
• HMS 16-1147, REV. E, AD. NO. 4, CL 23M™ Scotch-Weld™ Epoxy Adhesive EC-2216 B/A Gray is a flexible, two-part, room-temperature curing epoxy adhesive that provides high shear and peel strength, making this an ideal adhesive for the most demanding Aerospace applications. It maintains bond strength at low temperatures and stands up to challenging environmental conditions. It is often used to replace mechanical fasteners, screws, rivets and spot welds, and is excellent for bonding a variety of substrates such metal and many plastics. This epoxy is excellent for creating bonds that can be used at cryogenic temperatures and is widely used for composite laminate edge sealing. The mix ratio is 2:3 and the adhesive provides a 90-minute work life to allow time to adjust fit prior to setting. The adhesive reaches handling strength in approximately 12 hours and is fully cured in 7 days (at 72° F /22° C) but can be accelerated with heat.
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POPULAR SPEC:
• BMS 5-105 TY II CL 13M™ Scotch-Weld™ Urethane Adhesive EC-3532 B/A is a two-part urethane designed to create strong, impact-resistant bonds ideal for Aerospace manufacturing and composite assembly. Engineered to become sag-resistant within approximately 30 seconds of mixing, it stays in place without running or dripping, ensuring precise application on vertical or overhead surfaces. A workable open time of 5–15 minutes allows for accurate part positioning, while full cure is achieved in 24 hours at room temperature—or faster with added heat—to help maintain production flow.
This versatile adhesive can be applied using a spatula, trowel, or flow equipment, and provides reliable performance across metals including aluminum and steel, with shear strength values suited for demanding environments. As a structural urethane, it offers excellent resistance to temperature, moisture, and chemicals, enables bonding of dissimilar materials, and eliminates the need for mechanical fastening or surface damage—delivering clean, durable, and efficient bonding solutions for Aerospace applications.