Description
Plexus MA560-1 is a high-performance, two-part structural methacrylate adhesive formulated for bonding large assemblies that require an exceptionally long working time. With a 55–70 minute open time, fabricators can accurately position and align large components without rushing.
MA560-1 provides outstanding fatigue resistance, toughness, and impact strength, making it ideal for demanding marine, transportation, and industrial applications. The adhesive dispenses as a non-sagging thixotropic gel, suitable for vertical surfaces and gap sizes up to 1 inch (25 mm).
Available in Black or White, depending on aesthetic or inspection preferences.
Key Features and Benefits
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Extended open time: 55–70 minutes for large assemblies
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Bonds thermoplastics, composites, coated metals, and primed raw metals
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Gap filling up to 1.00 inch (25 mm)
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Excellent impact resistance, fatigue endurance, and durability
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Thixotropic gel for vertical bonding
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1:1 mix ratio simplifies equipment and application
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Achieves 500 psi in 3 hours and 1000 psi in 4 hours at 74°F (23°C)
Common Applications
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Bonding stringers and liners in large fiberglass marine structures
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Composite hulls, decks, and large FRP assemblies
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Bus, trailer, truck, and specialty vehicle bonding
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Exterior cladding and architectural panel systems
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Large structural industrial components requiring long alignment windows
Technical Specifications
| Property | Value |
|---|---|
| Available Colors (Variants) | Black or White |
| Mix Ratio | 1:1 (volume & weight) |
| Working Time @ 74°F (23°C) | 55–70 minutes |
| Fixture Time | ~220–240 minutes |
| Gap Tolerance | 0.03 – 1.00 in (0.75 – 25 mm) |
| Tensile Strength | 2,500 – 3,100 psi |
| Elongation at Break | >130 percent |
| Tensile Modulus | 80–120 kpsi |
| Hardness | Shore D 70 |
| Viscosity | Part A: 145–185k cps Part B: 170–205k cps |
| VOC (during cure) | <0.5 percent |
| Shelf Life | 6 months (55°F–77°F) |
Compatible Substrates
Composites
DCPD, FRP, gelcoat, phenolics, epoxy composites, RIM
Metals
Powder-coated metals
E-coated metals
Aluminum
Stainless Steel
Raw metals with PC120 primer
Thermoplastics
ABS / ABS blends
Acrylics
PBT
Polycarbonate
Rigid PVC
TPUs
Packaging & Ordering Information
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400 ml cartridge (parent product – selectable in Black or White)
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Also available in bulk:
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5-gallon pail sets
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50-gallon drum sets
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Why Buy from Chemical Concepts?
We offer full technical support and competitive pricing for all Plexus structural adhesives. Our team helps manufacturers select the correct adhesive for composite, metal, or thermoplastic bonding.
For technical questions or quotations, call 800-220-1966 or email [email protected].
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