Product Introduction
3M™ Impact Resistant Structural Adhesive (IRSA) is specifically formulated for true automotive OEM-specified structural bonding applications, delivering excellent impact resistance for collision absorption in steel structures and advanced lightweight aluminum alloys. This two-part epoxy adhesive offers extended work times of up to 1 hour and can be heat-cured quickly. It dispenses in a silver color and changes to purple as it cures, providing a clear visual indicator of the curing process.
Engineered to withstand significantly higher impacts than traditional bonding adhesives, 3M™ IRSA adheres to properly prepared automotive substrates such as mild steel, high-strength steel, and aluminum alloys—critical as OEMs increasingly utilize lightweight structures for high-strength vehicle designs. It is suitable for weld-bonded and rivet-bonded joints as specified by OEM standards. The adhesive cures in as little as 30 minutes at 80°C (175°F) when heat is applied.
3M™ IRSA is designed for optimal impact resistance and enhanced torsional rigidity in OEM automotive structures. It allows for spot welding in its uncured state for up to three hours after application. Once fully cured, it provides lifetime corrosion protection, seals joints against environmental exposure, and helps reduce noise, vibration, and harshness (NVH) inside the vehicle.
The adhesive is available in 200 mL cartridges for smaller jobs and 450 mL cartridges compatible with the 3M™ Dynamic Mixing System (DMS). This system simplifies the adhesive mixing process using pre-loaded cartridges and mixing nozzles, ensuring consistent mix quality while reducing waste and cleanup time. Adhesive can be dispensed using the 3M™ Dynamic Mixing Gun (PN 05846) along with the 3M™ DMS Mixing Nozzle (PN 55847).
With decades of adhesive innovation, 3M continues to lead in developing high-performance bonding solutions. 3M™ Impact Resistant Structural Adhesive represents this legacy, offering long-term strength, torsional rigidity, and corrosion protection, making it an ideal solution for modern automotive collision repairs.
3M™ Impact Resistant Structural Adhesive (IRSA) Features
- Delivers higher impact strength compared to traditional bonding adhesives
- Provides corrosion protection with a lifetime warranty
- One-day (24 hours) curing process can be accelerated with heat
- Ideal for either welding or riveting bonding within working time
- Adheres to a wide variety of properly prepared steel and aluminum substrates
- Colored formula dispenses silver before turning purple to indicate proper curing
- Offers an excellent shelf life whether opened or unopened, helping to reduce unused product replacement costs
3M™ Impact Resistant Structural Adhesive (IRSA) Applications
- OEM-specified structural bonding for automotive collision repair
- Bonding of mild steel, high-strength steel, and automotive aluminum alloys
- Weld-bonding and rivet-bonding joints
- Applications requiring extended work time and rapid heat curing
- Situations where corrosion protection and high impact resistance are critical
- Use with the 3M™ Dynamic Mixing System for efficient, precise adhesive application
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 |
| Application | Impact Resistance, Bonding, Attaching |
| Brands | 3M™ |
| Case Quantity | 2, 3 |
| Consistency | Paste |
| Container Size (Imperial) | 6.76 fl oz, 15.22 fl oz |
| Container Size (Metric) | 200 mL, 450 mL |
| Container Type | Cartridge |
| Cure Time | 24 hr |
| Full Cure Time | 24 hr |
| Paint Time | 24 Hour |
| Smallest Saleable Unit | Each |
| Time to Handling Strength | 5 min – 10 min |
| Volume (Imperial) | 6.75 fl oz, 15.2 fl oz |
| Volume (Metric) | 200 mL, 450 mL |
| Work Life | 60 min |
