WEST SYSTEM 500 Additives

Product info

WEST SYSTEM® 500 Series Additives — Enhance the Performance & Finish of Your Epoxy Coatings

The WEST SYSTEM® 500 Series Additives are specialty powders and pigments designed to modify the appearance and surface properties of WEST SYSTEM® epoxy coatings. When blended into mixed epoxy, these additives enhance abrasion resistance, improve UV durability, adjust colour, and deliver customised surface finishes suitable for marine, industrial and composite applications.

Whether you are seeking a durable low-friction coating, a decorative colour finish, or improved wear characteristics, WEST SYSTEM® additives provide simple, reliable performance enhancements—all while maintaining the quality and consistency expected from the WEST SYSTEM® range.

As the authorised Australian distributor of WEST SYSTEM® products, ATL Composites ensures reliable supply, technical support and expert guidance across the complete WEST SYSTEM® epoxy range.

Available Additives:

423 Graphite Powder — Provides increased abrasion resistance, reduced friction, and a low-sheen black finish. Ideal for rudders, centreboards, keel surfaces and wear areas.
501 White Pigment — An opaque white tint for clean, even colour effects in epoxy coatings and laminations.
502 Black Pigment — A deep black tint used for solid colour finishes, detailing, and visual enhancements in composite work.

WEST SYSTEM 500 ADDITIVES

423 Graphite Powder

423 Graphite Powder is a fine black powder that can be mixed with WEST SYSTEM epoxy to produce a low friction coating with increased scuff resistance and durability. 423 is often used as a low-load, low-speed bearing surface, and as a coating on rudders and centreboards, or on the bottoms of racing craft that are dry sailed. It does not provide antifouling qualities.

501 & 502 Pigments

501 and 502 Pigments are epoxy-based pastes used to tint the epoxy mixture and provide an even colour base, or to highlight surface flaws and imperfections, prior to the final finish system. Adding a colouring agent to WEST SYSTEM epoxy is frequently done to make coloured casting, highlight an epoxy coated surface, or to act as a coloured base coat for paint, etc.

Pack Size	125 ml
	250 ml
	500 ml

423 graphite powder

501-502 pigment paste

frequently asked questions

How does ATL tailor composite systems for different industries?

Every industry has distinct performance, compliance, and manufacturing requirements. ATL’s in-house chemists and engineers develop and refine epoxy systems, adhesives, and core materials to meet the specific demands of marine, defence, aerospace, automotive, industrial, civil, architectural, and sporting applications — ensuring every product delivers optimal strength, efficiency, and durability.

Can ATL customise materials for my project or process?

Yes. ATL offers custom formulation and process engineering support to align material performance with your production requirements — whether infusion, hand lay-up, lamination, bonding, or CNC-routed panel construction. Our technical team collaborates closely with customers to deliver precision-matched resin systems and structural solutions for unique applications.

Are ATL’s composite systems certified for high-performance applications?

Absolutely. ATL operates under an ISO 9001:2015-certified quality management system, with selected materials approved by DNV for use in structural and high-load applications. Every ATL system is manufactured to exacting standards of performance, consistency, and traceability to meet the demands of defence, industrial, and advanced engineering environments.

What makes ATL’s materials suitable for large-scale or structural builds?

ATL’s epoxy systems, structural panels, and composite cores are engineered for high strength-to-weight performance, dimensional stability, and fatigue resistance. These attributes make ATL materials ideal for large composite assemblies, modular structures, and precision-engineered components where long-term strength, weight reduction, and reliability are essential.

Does ATL offer sustainable or bio-based composite options?

Yes. ATL is committed to advancing sustainable composite technology, offering USDA-Certified Bio-Based epoxy systems and environmentally conscious materials that reduce waste, extend service life, and minimise environmental impact. Our ongoing R&D focuses on improving sustainability without compromising structural integrity or mechanical performance.

How can I select the right ATL system for my application?

Choosing the ideal composite system depends on your structure’s design, load requirements, manufacturing process, and environmental exposure. ATL’s in-house engineers and chemists provide tailored advice to ensure the correct combination of resin, core, adhesive, and surface technology for your project.
To discuss your application or request technical guidance, contact ATL’s Technical Team — we’ll help you identify the most effective and efficient composite solution for your build.

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