3M EC-9323 B/A Scotch-Weld Structural Epoxy Adhesive, kit 1 litre, red-orange
3M Scotch-Weld Structural Epoxy Adhesive EC-9323 B/A is a two component epoxy paste adhesive which cures at room temperature or with mild heat to form a tough, impact resistant structural bond.
It has an excellent adhesion to a wide variety of substrates such as metals, glass, ceramics and plastics, incl. GFRP and CFRP.
Kit 1 litre, Colour of part B is off white, part A red-purple to dark violet
Please contact us before ordering to check the availability - delivery in 20/40 working days from order date.
Requires ADR transport

3M™ Scotch-Weld™ EC-9323 B/A High-Performance Structural Epoxy Adhesive
3M™ Scotch-Weld™ EC-9323 B/A is a high-performance, two-component structural epoxy adhesive designed for advanced bonding applications in industrial and aerospace applications.
This formulation delivers extremely high shear strength, peel resistance, and durability, even under extreme mechanical loads, thermal cycling, and harsh environmental conditions.
Its thixotropic paste formulation ensures controlled application on vertical or complex surfaces, making it ideal for precision structural assemblies in demanding industrial sectors.
Once cured, it forms a high-strength, impact-resistant bond on a wide range of substrates, including metals, composites, ceramics, and engineering plastics.
Main features
3M™ EC-9323 B/A is designed for high-end industrial and aerospace applications where maximum strength, durability and environmental resistance are required.
Recommended for:
- Aerospace manufacturing
- Advanced composite bonding
- High-load structural assemblies
- Engineering and R&D departments
- OEM and Tier suppliers
It's ideal when you need:
- Extremely high structural performance
- Long working time for complex assemblies
- Resistance to harsh chemicals and environments
- Reliable bonding under dynamic loads and fatigue
- Certified-level performance for critical applications
Suitable for high-performance industrial supply especially in aerospace, transportation and advanced engineering sectors.
Technical features and benefits for industrial applications
- Extremely high shear and peel strength for structural joints
- Excellent resistance to impact and dynamic loads
- Outstanding chemical and environmental resistance (fuels, oils, humidity)
- Wide operating temperature range
- Long working time (~120–150 min) for complex assemblies
- Thixotropic non-sag formulation for vertical applications
- Room temperature cure or accelerated heat curing
This makes EC-9323 one of the most suitable adhesives for high-reliability structural bonding.
Technical specifications
| Property | Value |
| Technology | Toughened structural epoxy (2-component) |
| Mixing ratio | 100:30 |
| Working time | ~120 - 150 min |
| Handling time | ~4 - 5 hours |
| Full cure | Up to 14 days at room temperature |
| Color | Off white (base) / red-orange (hardener) |
Material Compatibility
EC-9323 B/A bonds reliably to:
- Aluminum, steel and stainless steel
- Carbon fiber (CFRP) and fiberglass (GFRP)
- Ceramics and glass
- Engineering plastics and laminates
It is specifically designed for multi-material structural bonding in advanced engineering environments.
Typical Industrial & Aerospace Applications
Aerospace & Advanced Engineering
- Structural bonding of aircraft components
- Composite-to-metal bonding (CFRP / GFRP)
- High-performance lightweight structures
Industrial Manufacturing & OEM
- Structural bonding in heavy-duty assemblies
- Precision bonding in engineered systems
- Replacement of mechanical fastening in critical joints
Transportation & Automotive
- Structural components under dynamic load
- Metal-composite hybrid assemblies
- High-strength bonding in performance vehicles
Composites & Advanced Materials
- Bonding carbon fiber and fiberglass panels
- Laminated structural components
- Reinforced engineering structures
Frequently asked questions (FAQ)
Q: Is EC-9323 suitable for aerospace structural bonding?
Q: Can EC-9323 bond carbon fiber to metal?
Q: Why choose EC-9323 instead of standard epoxy adhesives?
- Higher mechanical strength
- Better resistance to fatigue and impact
- Longer working time for complex assemblies
- Superior resistance to chemicals and environmental stress
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Data sheet
- Brand
- 3M
- Format
- kit 2 case 1total 1 l
- Colour
- Red orange
- Units per package
- 1 kit - 1l
- Type of price
- per KIT
- Status
- B