What Is an Aluminum Composite Panel?
Aluminum Composite Panel (ACP) is a modern, lightweight, and durable sandwich panel consisting of two thin aluminum sheets bonded to a non-aluminum core—commonly polyethylene (PE) or fire-retardant mineral-filled core (FR). These panels are known for their smooth surface, rigidity, weather resistance, and ease of fabrication, making them ideal for architectural cladding, signage, interior decoration, and industrial applications.
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Types of Aluminum Composite Panels
| Type | Core Material | Key Features | Applications |
|---|---|---|---|
| PE Core ACP | Polyethylene | Lightweight, economical | Signage, interior, partitions |
| FR Core ACP | Mineral-filled fire-retardant | Fire resistant (Class A2 or B1) | Building facades, airports |
| Brushed ACP | PE or FR | Decorative brushed metal look | Interior wall, kitchens |
| Mirror ACP | PE | Highly reflective surface | Showrooms, ceilings |
| Wooden/Marble ACP | PE or FR | Imitates wood or stone textures | Hotels, malls, signage |
| Nano ACP | PE or FR | Self-cleaning nano-coated surface | Hospitals, public buildings |
ACP Panel Specifications
| Parameter | Specification |
|---|---|
| Panel Thickness | 2 mm, 3 mm, 4 mm, 5 mm, 6 mm |
| Aluminum Skin Thickness | 0.08 mm to 0.50 mm (standard: 0.21 mm or 0.30 mm) |
| Panel Width | 1220 mm, 1250 mm, 1500 mm (custom available) |
| Panel Length | Standard: 2440 mm / 3050 mm / 3660 mm / Custom |
| Core Material | LDPE / FR (Mineral-filled) |
| Surface Coating | PE / PVDF / Nano / FEVE |
| Available Colors | Solid, Metallic, Glossy, Wooden, Marble, Custom |
| Fire Rating | A2 / B1 (FR Panel); Non-rated (PE Panel) |
| Coating Brand | PPG, AkzoNobel, Nippon, Becker, etc. |
| Standard | ASTM E84, EN 13501-1, GB/T 17748, ISO 9001 |
| Density | ~3.5–5.6 kg/m² depending on thickness and core |
Surface Finishes
| Finish Type | Description | Use Case |
|---|---|---|
| PE Coating | Polyester for interior or low UV outdoor use | Signage, interiors |
| PVDF Coating | Polyvinylidene Fluoride for superior durability | External facades, harsh climates |
| Nano Coating | Dirt-resistant, self-cleaning | Hospitals, schools |
| Mirror Finish | Reflective, glass-like look | Decorative, luxury projects |
| Wood/Marble | Imitates natural material | Interior cladding, walls |
| Brushed | Fine-textured aluminum finish | Kitchens, elevators |
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ACP Grades & Fire Ratings
| Grade | Description | Fire Classification |
|---|---|---|
| Class PE | Standard low-density polyethylene core | Non fire-rated |
| Class B1 | 70% mineral content FR core | EN 13501 B-s1, d0 |
| Class A2 | 90%+ mineral core with aluminum trihydrate | EN 13501 A2-s1, d0 |
Fire-retardant ACPs are required in public buildings, high-rises, airports, hospitals, etc.
Product Packaging
Adopting a professional industrial packaging solution that is moisture-proof and scratch resistant, each batch of steel is tied and fixed with customized wooden frames/steel strips, combined with anti rust coatings and cushioning pads to ensure zero damage during transportation. Clear product model, batch number, and storage identification on the outer packaging, supporting customized enterprise logos and information labels. Environmentally friendly and recyclable packaging materials practice green concepts, reducing transportation and disassembly costs.
Key Features of ACP
✅ Lightweight but Rigid – Low density with high structural stiffness
✅ Excellent Weather Resistance – Withstands UV, rain, pollution, and corrosion
✅ Smooth Surface Finish – Ideal for digital printing or architectural aesthetics
✅ Fire-Resistant Options Available – With mineral-filled FR core
✅ Easy to Fabricate & Install – Can be cut, bent, routed, or folded
✅ Wide Range of Colors & Finishes – Metallic, woodgrain, mirror, marble, etc.
✅ Sound & Thermal Insulation – Multi-layered structure absorbs noise and heat
Installation Methods
Tray (Cassette) System – Routed and folded to form a box-like structure
Hook-On System – Panels hang on subframe with hooks
Rivet System – Panels fixed with exposed rivets or screws
Dry Gasket / Silicone Sealant – Seamless or sealed look
ACP vs Other Cladding Materials
| Feature | ACP | HPL Panels | Fiber Cement | Solid Aluminum |
|---|---|---|---|---|
| Weight | Light | Medium | Heavy | Medium |
| Cost | Moderate | Higher | Lower | High |
| Fire Resistance | B1 or A2 grade available | Good | Excellent | Excellent |
| Weather Resistance | Excellent | Good | Good | Excellent |
| Installation | Easy | Medium | Medium | Medium |
| Aesthetic Range | Very High | Medium | Low | Medium |
Advantages of Using ACP
| Advantage | Description |
|---|---|
| Aesthetics | Modern, clean, versatile design with endless finish options |
| Lightweight | Easier transport and reduced structural load |
| Durable | Withstands weather, corrosion, UV, and impact |
| Thermal & Acoustic Insulation | Good sound and heat resistance due to sandwich structure |
| Easy to Work With | Cut, punch, bend, drill, and fold easily |
| Low Maintenance | Resistant to dirt, cleaning is easy |
ACP Panel Weight Chart
| Thickness | Approximate Weight (kg/m²) |
|---|---|
| 3 mm | 3.5 – 4.2 |
| 4 mm | 5.5 – 5.9 |
| 6 mm | 7.0 – 7.5 |
Common Applications
Architecture & Construction
Curtain walls
Exterior building cladding
Canopies and parapets
Balcony paneling
Tunnel linings
Advertising & Signage
Shop signage
Display boards
Wayfinding and directional signs
Exhibition booth decoration
Interior Decoration
Ceilings and partitions
Modular kitchens
False ceilings
Elevator panels
Transport & Industrial
Railway interiors
Airport control panels
Bus and van body decoration
Machine enclosures
Frequently Asked Questions (FAQs)
Q1: What is the standard size of an ACP panel?
Standard sizes are:
1220×2440 mm
1250×3050 mm
Custom sizes are also available upon request.
Q2: Can ACP be used in high-rise buildings?
Yes. Especially Class A2 or B1 fire-retardant ACP is approved for use in high-rise and public buildings per local fire codes.
Q3: Is ACP waterproof?
Yes. When installed correctly, ACP panels offer excellent water and moisture resistance.
Q4: How long do ACP panels last?
ACP panels typically last 15–25 years, depending on the coating (e.g., PVDF for external use).
Q5: Can ACP be painted after installation?
While possible, it's not recommended. Instead, choose pre-coated finishes during manufacturing.
Why Global Clients Choose Us?
Henan Gengfei Industrial Co., Ltd. is China’s leading supplier of steel and other metal products. Our company is dedicated to providing its customers with the quick quotes, superior quality products, competitive prices and fastest possible deliveries.
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