Aluminium composite panels, or aluminium composite panel thickness, are flat composite materials constructed from polyethylene core bonded with aluminium skins. They come in a wide array of colours, patterns, surface textures, dimensions and gauges. Boasting great adaptability, these panels fit many scenarios: internal and external wall cladding, sign fabrication, as well as decorative upgrades for metro trains, railway carriages and aerospace vehicles. Projects of different types require custom ACP dimensions, with variations covering both panel thickness and overall length.

A building's visual impression largely relies on its architectural design and outer facade - often described as a lightweight secondary outer layer. Picking the proper panel gauge carries equal weight to choosing facade patterns and surface finishes. Common ACP thickness options include 3mm, 4mm and 6mm. The total panel thickness is determined by two key components: the aluminium alloy coil faces and the thermoplastic core material.

ACP Sheets: Learn About 3mm, 4mm and 6mm Panel Options

When selecting ACP panel gauges and dimensions, mounting height acts as a major deciding factor. Wind loads at varying elevations will directly shape your pick of panel thickness and size.

Yet this is not the only consideration.

Selecting a suitable aluminium composite panel thickness stands as a critical step for reliable installation. If you fit thin panels in areas that demand heavier-duty sheets, the finished structure will fail to deliver the expected service life. Below are practical guidelines to help you select the correct aluminium composite panels.

Before diving into these tips, let us break down the specifications for aluminium composite panel thickness across all three thickness grades.

ACP Sheet Sizes/Thickness Chart

Why ACP Panels Come In Multiple Thicknesses and Dimensions

Aluminium composite panels are manufactured in a range of gauges including 3mm, 4mm, 6mm and other custom options. Your choice of panel gauge is primarily determined by installation elevation. Wind pressure changes significantly at different heights and becomes a key factor. Heavier-duty sheets from 4mm up to 6mm are widely adopted on high-rise offices and skyscraper facades. The 3mm grade works best for indoor cladding and sign-making projects.

3mm ACP Panel

This variant features 0.21–0.25mm aluminium alloy skins bonded to a 2.5mm core. The top and bottom aluminium layers share identical thickness. The surface is finished with either 2-coat or 3-coat PVDF paint, plus a protective peel-off film.

4mm ACP Panel

Two common configurations exist for 4mm aluminium composite sheets. The first version uses a 3.0mm core paired with 0.5mm aluminium skins on both sides. The second design has a 3.5mm LDPE core and 0.25mm aluminium faces. Varying core thickness makes each type fit interior or exterior facade jobs separately.

6mm ACP Panel

For 6mm ACP, aluminium skin options cover 0.25mm, 0.30mm and 0.50mm. Matching core thicknesses are 5.5mm, 5.4mm or 5mm accordingly. The 6mm panel delivers strong impact resistance and stable performance under high wind loads.

Tips for Picking Suitable ACP Panel Gauges

Project‑Location Considerations

For indoor decorating work, 3‑mm ACP panels serve as a cost‑effective solution. Outdoor installations demand robust panels capable of enduring fluctuating weather patterns. For this reason, 4mm and 6‑mm ACP grades are better suited for external building facades.

Application Scenarios

Aluminium composite panels fit a broad spectrum of practical uses, including signboards, 3‑dimensional display screens, promotional booths for events, transport carts, cabinet drawers and metro carriage interiors. Light‑duty 3mm panels are widely deployed for carts and drawer components. By contrast, heavy‑duty 6‑mm ACP delivers outstanding mechanical strength for outdoor‑facing projects.

Viva ranks among India's top‑tier ACP producers, supplying premium‑grade panels in 3 mm, 4 mm and 6 mm specifications. Our product portfolio includes one of India's widest colour palettes: Corton Steel, Galaxy, Desert, Natural Stone, Premium Marble, Classic Sparkle, Mirror, Premium Wood and numerous other finishes. Custom colours and surface textures can be produced according to individual project requirements.

Our ACP material comes with multiple enhanced functional attributes: fire‑retardant performance, antibacterial treatment, scratch‑resistant surface and self‑cleaning capability. We adopt lead‑free coating materials holding IGBC certification, bringing zero harm to ecological environments.

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