Crestabond® M1-20
ADHESIVE CARTRIDGE

Product info

Crestabond® M1-20 Structural Adhesive

Primerless MMA Structural Adhesive for High-Strength, Multi-Material Bonding

Crestabond® M1-20 is a toughened, two-component methacrylate (MMA) structural adhesive engineered for fast, reliable bonding of composites, metals, and thermoplastics. Designed for productivity and versatility, M1-20 delivers high strength, toughness, and fatigue resistance without the need for primers—significantly reducing surface preparation time and overall production cost.

With a non-sagging formulation, controlled working time, and excellent gap-filling capability, Crestabond® M1-20 enables consistent structural bonds on vertical and complex assemblies. Its broad substrate compatibility and wide operating temperature range make it suitable for demanding structural and environmental applications.

Key Features & Benefits

Primerless MMA technology

Bonds a wide range of substrates with minimal surface preparation

High strength & toughness

Excellent shear, peel, impact, and fatigue resistance

Fast setting & curing

Improves throughput and reduces clamp times

Non-sagging formulation

Ideal for vertical and overhead applications

Wide gap-filling capability

Bonds effectively from 1–25 mm

Broad operating temperature range

Reliable performance from -40°C to 100°C

Design flexibility

Enables bonding of dissimilar materials without mechanical fixings

Mechanical Properties (Cured)

(Laboratory tested)

Tensile Strength: ~16–20 MPa
Tensile Modulus: ~600–1000 MPa
Tensile Elongation: ~80–100%
Aluminium Lap Shear: ~17–21 MPa

Typical Application Properties

Working Time: ~16–22 minutes
Fixture Time: ~25–35 minutes
Gap Filling: 1–25 mm (0.04–1.00 in)
Mixed Colour: Grey / Black
Recommended Application Temperature: 18–25°C (64–77°F)
Specific Gravity: ~0.96–1.02 g/cc
Mix Ratio:
- By volume: 10:1
- By weight: 9:1
Shelf Life: 12 months (stored as recommended)

Substrate Compatibility

Crestabond® M1-20 provides strong adhesion to a wide range of substrates, including:

Composites: GRP / FRP, carbon fibre laminates
Metals: Aluminium, stainless steel, carbon steel, coated metals
Thermoplastics: ABS, PVC, acrylics, and common engineering plastics
Dissimilar material assemblies

(For low surface energy plastics such as PP or PE, consult ATL for suitable surface preparation or alternative grades.)

Applications

Crestabond® M1-20 is recommended for:

Structural bonding of composite assemblies
Bonding composites to metals and thermoplastics
Marine, transport, rail, and industrial fabrication
Replacement of mechanical fasteners
General-purpose structural bonding where speed and toughness are critical

Processing & Application

Crestabond® M1-20 is supplied as a two-component system for cartridge or bulk dispensing.

Ensure substrates are clean, dry, and free of contamination
Light abrasion can further enhance long-term bond durability
Dispense until a uniform mixed colour is achieved before bonding
Complete assembly within the stated working time
Maintain application temperatures within the recommended range

The primerless nature of M1-20 reduces process steps, but application trials are recommended for critical or unfamiliar substrates.

Packaging & Storage

Packaging options:
- 400 ml co-axial cartridges
- 10:1 M1 Mixer available
Storage:
Store between 2°C and 23°C (36–73°F) in original, unopened containers.
Protect from freezing and direct sunlight

Certifications

EN 45545-2 (Rail fire protection standard)

ATL Technical Support
ATL Composites provides adhesive selection guidance, joint design advice, and processing support to ensure Crestomer® 1152PA delivers reliable, long-term structural performance in composite assemblies.

Crestabond® M1-20 Structural Adhesive

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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