3M™ Impact Resistant Structural Adhesive (IRSA) is formulated for true automotive OEM-specified structural bonding applications, excellent for collision absorption in steel structures and advanced lightweight aluminum alloys. This two-part epoxy adhesive delivers extended worktimes – up to 1 hour – and can be rapidly heat-cured. The adhesive changes from silver to purple as the adhesive cures.
Engineered to withstand higher impact vs. traditional bonding adhesives, 3M™ Impact Resistant Structural Adhesive (IRSA) is excellent for OEM-specified automotive structural applications. It adheres to properly prepared automotive substrates including mild steel, high-strength steel and aluminium; vital as OEMs strive to achieve high strength in increasingly lightweight structures. This two-part epoxy adhesive is recommended for all weld-bonded and rivet-bonded joints when specified by an OEM. It provides an extended work time - up to one hour - and cures rapidly with heat (30 minutes at 80° C). Adhesive applies in a silver color and changes to purple as it cures, indicating when the curing process has begun. 3M™ IRSA is designed to absorb collision energy forces and delivers increased torsional rigidity for OEM-specified automotive structures. It allows for spot-welding (form squeeze-type) in an uncured state, typically up to three hours after application. Properly applied adhesive will seal joints completely, and perform when exposed to very hot and cold temperatures. 3M™ Impact Resistant Structural Adhesive is available in 200 ml cartridges.
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Adhesive Type
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Two-Part Epoxy
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Applications
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Alternatives to Rivetting or Welding, Bonding, Impact resistant, Large Panel Bonding, Steel bonding
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Consistency
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Paste
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Container Size (Metric)
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200 ml
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Container Type
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Cartridge
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Cure Time
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24 Hours
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Full Cure
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24 Hour
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Handling Time
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5-10 Minutes
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NPVI Mktg
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Yes
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Product Color
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Purple
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Set Time
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8 Hour
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Shelf Life in Months (from date of manufacture)
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12
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Volume (metric)
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200 mL
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Work Time
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60 Minutes
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