Technirez R2519
High-Temperature System

Product info

TECHNIREZ® R2519 – High-Temperature Epoxy System for Tooling, Casting & Laminating

TECHNIREZ® R2519 is a solvent-free, low-viscosity epoxy system engineered for outstanding high-temperature performance after post-cure. Designed for use with H2403 and H2409 hardeners, R2519 delivers significantly reduced mixed viscosity compared to its predecessor, R2515—while maintaining the elevated thermal resistance required for advanced tooling applications.

R2519 is formulated for the fabrication of high-temperature jigs, tooling blocks, moulds and composite tools, especially those exposed to elevated heating cycles such as pre-preg moulds, vacuum forming tools and industrial thermal processing fixtures. Its improved flow characteristics allow excellent fibre wet-out, reduced air entrapment and smooth casting behaviour, resulting in dense, stable, heat-resistant tooling with reliable dimensional accuracy.

When post-cured according to recommended schedules, R2519 achieves excellent glass transition temperatures (Tg) and maintains structural integrity under repeated thermal loading, making it suitable for demanding industrial, aerospace, automotive and composite manufacturing environments.

– Engineered For Heat. Built For Precision.

KEY PERFORMANCE FEATURES

Solvent-Free Laminating System For Clean, Controlled Processing
Choice Of Fast Or Slow Hardener To Match Ambient Conditions
Reliable Cure From 15°C To 60°C
Suitable For General-Purpose Composites & Structural Laminating
Strong Adhesion & Excellent Mechanical Performance
Easy-To-Mix, Low-Odour Epoxy System
Consistent Wet-Out For Smooth, Even Lamination
Ideal For Marine, Industrial & Repair Applications

TECHNICAL SPECIFICATIONS

Pot Life	110 - 120 / 100 - 140 mins
Demould Time	12 + 3hrs @ 40°C / 12 + 24hrs @ 40°C
Mix Ratio	25 parts H2430 hardener to 100 parts resin by weight 25 parts H2431 hardener to 100 parts resin by weight
Compatible Hardener	H2409 Slow / H2403 Medium / H2402 Fast
Physical State	Clear Liquid
Pack Size	Resin: 5 / 18 / 200 kg Hardener 1 / 5 / 22 kg

Technirez R2519

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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