Crestabond® M7-05
ADHESIVE CARTRIDGE

Product info

Fast-Curing Primerless MMA Structural Adhesive for Demanding Assemblies

Crestabond® M7-05 is a toughened, two-component, 1:1 methacrylate (MMA) structural adhesive designed for fast, reliable bonding of composites, metals, and thermoplastics. This next-generation primerless adhesive meets the bonding requirements of most assembly operations, delivering high strength, toughness, and fatigue resistance even in demanding industrial environments.

With a short working time and rapid fixture, Crestabond® M7-05 is ideal for high-throughput production where speed and consistency are critical. Its non-sag formulation allows confident application on vertical and complex geometries, while excellent environmental resistance ensures durable structural performance across a wide operating temperature range.

Key Features & Benefits

Primerless MMA technology

Minimal surface preparation for faster, lower-cost assembly

Fast setting & curing

Ideal for high-speed production and short clamp times

High strength, modulus & toughness

Excellent impact, peel, shear, and fatigue resistance

Non-sagging formulation

Controlled application on vertical and overhead joints

Broad substrate compatibility

Bonds composites, metals, and thermoplastics, including dissimilar materials

Excellent environmental resistance

Reliable performance in harsh service conditions

Enables replacement of mechanical fixings in bonded joints

Enables bonding of dissimilar materials without mechanical fixings

Mechanical Properties (Cured)

(Laboratory tested)

Tensile Strength: ~22–25 MPa
Tensile Modulus: ~1200–1700 MPa
Tensile Elongation: ~25–30%
Aluminium Lap Shear: ~17–22 MPa
Recommended Operating Temperature: −40°C to 100°C

Typical Application Properties

Working Time: ~4–7 minutes
Fixture Time: ~18–22 minutes
Gap Filling Capability: 1–5 mm (0.04–0.20 in)
Mixed Colour: Off-white (also available in black)
Recommended Application Temperature: 18–25°C (64–77°F)
Specific Gravity: ~1.00–1.03 g/cc
Mix Ratio:
- By volume: 1:1
- By weight: 1:1
Shelf Life: 9 months (stored as recommended)

Substrate Compatibility

Crestabond® M7-05 provides excellent adhesion to a wide range of substrates, including:

Composites: GRP / FRP, carbon fibre laminates, vinyl ester and polyester composites
Metals: Aluminium, stainless steel, carbon steel, zinc / galvanised steels
Thermoplastics: ABS, PVC, acrylics, and common engineering plastics

(For low-surface-energy plastics such as PP or PE, consult ATL for suitable alternatives.)

Applications

Crestabond® M7-05 is recommended for:

Structural bonding of composite assemblies
Bonding composites to metals and thermoplastics
Marine, transport, rail, and industrial fabrication
Vertical and complex bonded joints
High-speed production environments

Its balanced strength, toughness, and rapid cure make it suitable for a wide range of demanding structural and industrial applications.

Processing & Application

Crestabond® M7-05 is supplied as a two-component cartridge or bulk system.

Ensure substrates are clean, dry, and free from contamination
Light abrasion may improve long-term bond durability on aged surfaces
Dispense until a uniform mixed colour is achieved before bonding
Complete assembly within the stated working time
Maintain recommended application temperatures throughout cure

Although primerless, application trials are recommended for unfamiliar substrates or critical load-bearing joints.

Packaging & Storage

Packaging options:

- - 400 ml co-axial cartridges
  - 1:1 Static Mixers avaiable

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
Class NK

ATL Technical Support
ATL Composites provides adhesive selection guidance, substrate compatibility advice, and process optimisation support to ensure Crestabond® M7-05 delivers fast, reliable, and durable structural bonds in your production environment.

Crestabond® M7-05 ADHESIVE CARTRIDGE

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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