WILLSTRONG® ACP Aluminum Composite Panel

Product Introduction

WILLSTRONG® ACP Aluminum Composite Panel is an architectural cladding material consisting of two aluminum sheets bonded to a core, combining lightweight construction, rigidity, flatness, weather resistance and flexible fabrication.

Available with mineral-filled fire-performance cores or a standard PE core, the ACP range provides different solutions for high-rise façades, ventilated façades, commercial buildings, signage, storefronts, interior applications and creative architectural cladding.

PVDF and polyester coil coatings are available for different appearance and performance requirements. A wide selection of solid, metallic, woodgrain, natural stone, chameleon, anodized, nano-coated, design and special finishes allows architects, fabricators and project contractors to select suitable surface effects.

Key Product Features

Lightweight and Rigid Construction

ACP combines relatively low weight with structural rigidity and good flatness. This helps reduce handling and fabrication requirements while providing a clean architectural surface for façade and cladding applications.

Multiple Fire-Performance Options

The product range includes non-combustible A2 panels, fire-retardant B1 panels and standard PE-core panels for applications with different fire-performance requirements.

Premium A2 ACM uses a mineral-filled core and achieves EN 13501-1 Class A2-s1, d0. B1 ACM uses a mineral-filled fire-retardant core and achieves EN 13501-1 Class B-s1, d0.

Weather-Resistant Surface

PVDF-coated surfaces are designed for demanding exterior applications, providing weather resistance and long-lasting color performance. Depending on the selected coating and finish, the panels can also offer stain resistance and easier surface maintenance.

Flexible Fabrication

The panels are designed for practical architectural processing and can be fabricated into different forms for façade, signage, storefront and interior applications. Their combination of flatness, rigidity and workability supports efficient project installation.

Wide Range of Colors and Textures

Available finishes include standard solid colors, metallic, woodgrain, natural stone, chameleon, nano coating, anodized effects, design finishes and special finishes.

Custom colors and dimensions can be provided according to project requirements.

Recyclable and Long-Term Value

The aluminum-based panel construction can support material recycling, while the durable surface and low-maintenance characteristics help provide long-term value for architectural applications.

ACP Product Types

A2 Non-Combustible Aluminum Composite Panel

The A2 ACM features a mineral-filled core designed for high fire safety requirements. It achieves EN 13501-1 Class A2-s1, d0.

This panel combines fire performance with lightweight rigidity, flatness and fabrication flexibility. It is suitable for demanding architectural projects, including high-rise and ventilated façade applications where enhanced fire performance is required.

B1 Fire-Retardant Aluminum Composite Panel

The B1 ACM uses a mineral-filled fire-retardant core and achieves EN 13501-1 Class B-s1, d0 under the stated EN 13501-1 classification.

It provides a balance of fire performance, rigidity, flatness and workability for ventilated façades, commercial architecture and other building applications.

Standard PE-Core Aluminum Composite Panel

The standard ACP uses a PE core and is designed to provide practical performance and cost efficiency. It offers lightweight rigidity, good flatness and convenient fabrication.

Available in multiple colors and finishes, the standard series is particularly suitable for signage, storefronts and applications where the specified project requirements permit PE-core ACM.

Dimensions and Available Sizes

The panel range supports different combinations of thickness, aluminum layer and surface finish according to the intended application.

Available Surface Finishes

• Standard Solid

• Metallic

• Woodgrain

• Natural Stone

• Chameleon

• Nano Coating

• Anodized

• Design Finishes

• Special Finishes

Different finish options allow ACP panels to match modern façades, commercial storefronts, interior walls, signage and decorative architectural concepts.

Fire Ratings and Standards

The available fire-performance configurations have been tested or specified against multiple standards, including:

Final panel selection should be based on the applicable building code and project fire-safety requirements.

Physical Properties

For the specified 3mm and 4mm panel configurations:

Aluminum layers use 3003H26 alloy/temper. The modulus of elasticity is 70,000N/mm², tensile strength is ≥130N/mm², 0.2% proof stress is ≥90N/mm², and elongation is ≥5%.

The stated linear thermal expansion is 2.4mm/m at 100°C temperature.

Core and Surface Coating

Core

The product range uses different core constructions according to the required fire performance, including mineral-filled polymer cores for A2 and B1 configurations and PE core construction for the standard series.

Surface Coating

Available coating systems include:

• Polyester coil coating (PET)

• Fluorocarbon coil coating (PVDF)

The stated film thickness is ≥18µm for PET and ≥25µm for PVDF.

Initial gloss ranges are 30–90 for the specified PET coating and 30–80 for PVDF. Pencil hardness is H–2H for PET and H for PVDF according to the provided specifications.

Mechanical Performance

The specified coating and panel performance includes:

These properties provide a combination of panel rigidity, bonding performance and mechanical strength for architectural cladding applications.

Coating Performance

The specified coating performance includes:

• Coating thickness: average 29µm for two-coating systems and 38µm for three-coating systems

• Hot water resistance: no visible change

• Stain resistance: 3.20%

• Acid resistance: no bubble, bulge or chalking; ΔE = 1.13

• Alkali resistance: no bubble, bulge or chalking; ΔE ≤0.65

• Oil resistance: no change

• Solvent resistance: substrate invisible

These results support the use of suitable coated ACP configurations in architectural applications requiring surface durability and maintenance efficiency.

Acoustical and Thermal Properties

The specified acoustical properties include a sound absorption factor of 0.05 and sound transmission loss of ≥25dB.

Selected thermal properties include:

Actual thermal performance should be evaluated according to the complete wall or façade system and project design.

Applications

WILLSTRONG® ACP can be used in a wide range of architectural and commercial applications, including:

• Ventilated façades

• Building façades

• High-rise architectural cladding

• Commercial buildings

• Storefronts

• Signage

• Interior wall cladding

• Decorative architectural surfaces

• Retail architecture

• Creative building envelopes

• Renovation and façade improvement projects

A2 and B1 fire-performance panels can be selected for projects with specific fire-safety requirements, while standard PE-core ACP can be considered for suitable signage and storefront applications.

Architectural Design Options

ACP provides architects and fabricators with multiple options for combining panel color, texture and surface treatment. Solid and metallic finishes can support contemporary façade designs, while woodgrain and natural stone effects can provide alternative visual appearances.

Chameleon, anodized, nano-coated and special finishes are also available for projects requiring distinctive surface effects.

Customization

Custom dimensions are available upon request. Panel thickness, aluminum layer thickness, width, length, coating and finish can be selected according to project requirements and product availability.

Custom color matching can also be considered for architectural projects requiring a specific visual identity.

Project Application: USTP Gymnasium

For the USTP Gymnasium curtain wall project, WILLSTRONG supplied approximately 8,500m² of 5110/5308 blue and white Aluminum Composite Panels in 2013.

The selected panels provided lightweight rigidity, flatness and weather resistance for the curtain wall application. Custom color matching and the available range of finishes supported the project's architectural design requirements.

About the Supplier

WILLSTRONG® was established in 1995 and specializes in façade products including aluminum composite panels, fire-resistant composites and aluminum honeycomb systems.

The company states that its products have been used in landmark projects including Charles de Gaulle International Airport. Its supplied company information also highlights more than 30 certifications worldwide, more than 10 technology patents, over 100,000 successful cases and customers across more than 80 countries and regions.

The company focuses on architectural façade material development, product quality, application support and long-term project service.

B2B Procurement Information

For project procurement, buyers can specify:

• Required panel thickness

• Fire-performance class

• Aluminum sheet thickness

• Panel width and length

• Surface coating

• Color and finish

• Quantity

• Custom dimensions

• Project application

• Applicable fire and building standards

For façade projects, it is recommended to confirm the complete panel specification, fire classification, coating system, installation method and applicable local requirements before ordering.

FAQ

Q1: What is an aluminum composite panel?
ACP is a composite architectural panel consisting of aluminum sheets bonded to a core, offering lightweight construction, rigidity, flatness and flexible surface design.

Q2: What thicknesses are available?
Available panel thicknesses include 2.5mm, 3mm, 4mm, 5mm and 6mm.

Q3: What widths are available?
Standard widths include 1220mm, 1250mm and 1500mm, with custom dimensions available upon request.

Q4: What fire-rated ACP options are available?
The range includes A2-s1, d0 and B-s1, d0 configurations under EN 13501-1, in addition to a standard PE-core series for suitable applications.

Q5: Is PVDF coating available?
Yes. Fluorocarbon PVDF coil coating is available, along with polyester PET coating.

Q6: Can the panel color be customized?
Custom color matching can be considered according to project requirements.

Q7: Where can ACP be used?
Typical applications include ventilated façades, high-rise cladding, commercial architecture, storefronts, signage and interior cladding.

Product Summary

Combining lightweight aluminum construction, multiple core options, architectural finishes and flexible fabrication, the WILLSTRONG® ACP Aluminum Composite Panel provides configurable solutions for façade, cladding, signage, storefront and interior projects.