Akzonobel - Formerly Mapaero XS420 HARDENER (1-LITRE-CAN)

Additional Product Information

Overview

TOPCOAT XS420 is a three-component polyurethane topcoat designed for superior protection of aircraft structures. Ideal for both structural and exterior applications, it delivers high chemical resistance and a durable, high-gloss finish. Aviation and MRO teams rely on XS420 for its reliable performance, compatibility with chromate-free primers, and long-lasting corrosion protection.

Key Technical Specs for TOPCOAT XS420

• Type: Three-component polyurethane topcoat
• Size / Volume: Base 3 L, Hardener 1 L & 5 L, Thinner D713 / D713-2 1 L & 5 L, 30 mL Base + 10 mL Hardener
• Color: Black, Red, Yellow, White, Grey (gloss >85GU for dark tints, >90GU for white/grey)
• Viscosity / Consistency: Spray application CA 4 ISO 4 cup, 18 35 C (64 95 F)
• Cure / Working Time: Pot life 1 3 hours depending on thinner type
• Tensile / Peel Strength: Compatible with SP350 epoxy primer for adhesion and corrosion protection
• Shore Hardness: Not specified; polyurethane high gloss finish
• Service Temperature: Suitable for standard aerospace environmental conditions
• Typical Uses: Structural and external aircraft coating, MRO touch-ups, corrosion protection
• Shelf Life: Base & Hardener 18 months; Thinner 48 months (stored 5 35 C / 41 95 F)

Approvals & Specifications

• Messier-Bugatti-Dowty: IFC30-125-06
• Aircelle: HMRC0150A
• Chromate-free corrosion resistant primer compatibility: SP350

Typical Aircraft MRO / AOG Applications

• External fuselage and structural components
• Wing surfaces and control surfaces
• Landing gear and metallic substructures
• Maintenance touch-ups on in-service aircraft

Compatibility & Safety Notes

• Compatible with metallic substrates (steel, aluminum alloys) pre-treated with anodization or conversion coating
• Requires epoxy primer (SP350) for adhesion and corrosion protection
• PPE recommended: gloves, eye protection, and respirator during spray application
• Use in well-ventilated areas; avoid skin and eye contact

Packaging & Procurement

• Base: 3 L
• Hardener: 1 L & 5 L
• Thinners D713 / D713-2: 1 L & 5 L
• Storage: 5 35 C (41 95 F) in sealed containers; keep away from frost and heat
• Easy-to-use mixing ratios for spray or brush applications

Why TOPCOAT XS420 is Chosen for AOG / MRO

• Rapid curing options reduce aircraft downtime
• High reliability and chemical resistance for critical aerospace applications
• Versatile application methods: spray and brush

Practical Suggestions for Your Team (AOG Mindset)

• Stock base, hardener, and thinner for immediate deployment in AOG situations
• Train staff on proper mixing ratios and spray/brush techniques
• Maintain temperature-controlled storage for optimal pot life and performance

Manufacture / Aviation Spec Codes

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

Alternative Names & Descriptions

• XS420 Polyurethane Topcoat
• XS420 Aircraft Coating
• XS420 Three-Component Topcoat
• Chromate-Free XS420 Primer-Compatible Coating