Plexus® MA550 Two-part Methacrylate Adhesive

Product code: MA550
Manufacturer: Plexus
Package size:
Shelf Life: 10 months

Plexus® MA550 is a high-performance two-part methacrylate adhesive designed for structural bonding of thermoplastics, metals, and composites. Mixed at a 10:1 ratio, MA550 offers a working time of 40-50 minutes, achieving 75% of its ultimate strength in 70-75 minutes at 23˚C (74˚F). This adhesive is ideal for secondary bonding in the marine industry, requiring minimal surface preparation. With excellent fatigue endurance, impact resistance, and toughness, MA550 is bright white and UV stable. Available in 490 ml cartridges, 20-liter pails, and 200-liter drums, it dispenses as a non-sagging gel.

Key Features:

40-50 minute working time
White and UV stable
Fast, consistent strength development at room temperature
High elongation and stress distribution

Key Substrates:

Composites: DCPD, FRP, Gelcoat, Phenolics, Epoxy Composites, RIM
Thermoplastics: ABS, Acrylics, PBT, Polycarbonate, Rigid PVC, TPUs
Coated Metals: Powder-coated, E-coated Metals
Raw Metals: Aluminum, Stainless Steel, Raw Steel

Typical Uncured Properties	Part A	Part B
Color	Off-White	White
Mix Ratio by Volume	10	1
Mix Ratio by Weight	6.55	1.0
Component Density, g/ml	0.94	1.51
Component Viscosity, cP x1000	130 – 160	30 – 70
VOC’s during cure, %	< 1
Shelf Life, Months	10