Akzonobel - Formerly Mapaero XS420-WHITE-000(3-LITRE-CAN)

Additional Product Information

Overview

TOPCOAT XS420 is a three-component polyurethane topcoat designed for structural and external applications in the aviation and MRO sectors. It provides high chemical resistance, excellent gloss, and long-lasting protection for metallic substrates. Maintenance and repair teams rely on XS420 for its durability, ease of application, and compatibility with chromate-free primers such as SP350, ensuring optimal adhesion and corrosion protection for aircraft structures.

Key Technical Specs for TOPCOAT XS420

• Type: Three-component polyurethane topcoat
• Size / Volume: Base 3 L; Hardener 1 L & 5 L; Thinner 1 L & 5 L; Touch-Up Kit 40 mL
• Color: Black, Red, Yellow, White, Grey (tints)
• Viscosity / Consistency: Spray ISO 4 CA cup 18 38 s; Brush easily brushable after mixing
• Cure / Working Time: Pot life 1 3 hours depending on thinner; fully cured 3 7 days
• Tensile / Peel Strength: Excellent adhesion over epoxy primers and treated metals
• Shore Hardness: N/A (film-forming coating)
• Service Temperature: Recommended application 15 C 35 C (59 F 95 F); drying up to 100 C (212 F)
• Typical Uses: Aircraft exterior and structural component protection; touch-up and maintenance applications
• Shelf Life: Base and hardener 18 months; thinner 48 months (stored 5 C 35 C / 41 F 95 F in sealed packaging)

Approvals & Specifications

• Messier-Bugatti-Dowty IFC30-125-06
• Aircelle HMRC0150A

Typical Aircraft MRO / AOG Applications

• Structural coatings on aluminium and steel aircraft components
• External surfaces requiring high gloss and chemical resistance
• Corrosion protection over anodized or conversion-treated metals
• Spot repairs and maintenance touch-ups using 40 mL touch-up kits

Compatibility & Safety Notes

• Compatible with metallic substrates including steel and aluminium alloys
• Recommended use over chromate-free primer SP350 for optimal adhesion
• PPE required: gloves, eye protection, and adequate ventilation during application
• Handle with care; follow Safety Data Sheet guidelines

Packaging & Procurement

• Base: 3 L
• Hardener: 1 L and 5 L
• Thinner: 1 L and 5 L
• Touch-Up Kits: 40 mL (30 mL base + 10 mL hardener)
• Storage: 5 C 35 C (41 F 95 F), sealed original packaging
• Easy mixing and application via brush or spray

Why TOPCOAT XS420 is Chosen for AOG / MRO

• Fast application and curing for rapid aircraft turnaround
• Reliable chemical resistance and corrosion protection
• Versatile for large surfaces, complex geometries, and touch-up kits
• Portable and easy to handle in maintenance environments

Practical Suggestions for Your Team (AOG Mindset)

• Stock base, hardener, and thinner in recommended quantities for quick access
• Pre-condition products at 18 C 25 C (64 F 77 F) before use
• Use proper mixing procedures to ensure homogenous application
• Train maintenance personnel on spray and brush techniques
• Keep touch-up kits readily available for minor repairs

Manufacture / Aviation Spec Codes

• Manufacturer: SAS
• Product ID: XS420 Topcoat
• MIL / OEM / Export Codes: Messier-Bugatti-Dowty IFC30-125-06, Aircelle HMRC0150A

Alternative Names & Descriptions

• XS420 Polyurethane Topcoat
• XS420 Aircraft Coating
• XS420 High-Gloss Protective Finish
• XS420 MRO/Touch-Up Kit
• XS420 Structural Aircraft Topcoat