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Which aluminium suits your project? Alloys, properties and applications clearly explained.
Aluminium is not the same as aluminium. Depending on the project, the requirements differ considerably – and with them the choice of the right sheet. Anyone who orders carelessly here risks expensive wrong decisions, material problems or avoidable rework. After all, an aluminium sheet for interior fitting places different demands than a sheet used in vehicle construction.
Factors such as corrosion protection, appearance, load-bearing capacity and machinability also play a central role. This article helps you to identify the aluminium sheet suitable for your project and to avoid typical mistakes in selection.
Defining project requirements – the most important questions in advance
Before you decide on an aluminium sheet, you should clarify:
- Which mechanical loads act on the component?
- Will the component be used indoors or outdoors?
- Is corrosion protection decisive?
- Is the material to be welded, drilled or milled?
- Which surface is required? (raw, anodised, brushed)
These questions determine the requirements for strength, machinability, protection and appearance.
Aluminium alloys in comparison
Aluminium sheets are available in different alloys, which differ significantly in their properties:
| Alloy | Properties | Typical applications |
|---|---|---|
| EN AW-1050 | soft, very easy to form, not hardenable | signs, decorative panels, reflectors |
| EN AW-5754 | good corrosion resistance, medium strength | vehicle construction, machine cladding |
| EN AW-6082 | high strength, very easy to mill, easy to weld | mechanical engineering, construction, support panels |
| EN AW-7075 | very high strength, difficult to weld | aviation, highly stressed components |
Selection criteria in detail
The selection of the right aluminium sheet should always be project-related. Anyone wishing to realise load-bearing or heavily stressed components should ideally choose high-strength alloys such as EN AW-6082 or 7075. These materials offer high mechanical strength, with 7075 being particularly suitable for highly stressed applications. For less stressed applications or decorative purposes, softer alloys such as 1050 are entirely sufficient.
Outdoors, corrosion-resistant materials are essential. EN AW-5754 and 1050 have proven particularly successful here. In aggressive environments – for example with salt-laden air – a suitable surface finish such as anodising or powder coating is also recommended.
Machinability also plays an important role: 6082 is both easy to mill and easy to weld, while 7075 is very strong but difficult to weld. 1050, on the other hand, can be edged and punched extremely well, which makes it attractive for simple cladding or punched sheet metal parts.
For appearance, surface qualities are decisive: raw, anodised, brushed or laminated – depending on the place of use and visibility. Anodised sheets also offer protection against corrosion and are well suited to façades or design elements.
Last but not least, weight also plays a role. Although aluminium is generally light, for large-area applications or high loads the ratio of thickness, alloy and static stress should be carefully checked.
Typical applications and recommended sheet types
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Mechanical engineering
6082 sheets are particularly in demand here: high strength, good millability, exact tolerances.
Vehicle construction
For bodies, interior cladding or load floors, 5754 is frequently used: corrosion-resistant, medium strength, easy to form.
Construction / façade
In façade construction, appearance and weather resistance count. Anodised 1050 or 5754 sheets are standard here.
Furniture & décor
For visible parts and design elements, anodised or brushed aluminium (e.g. 1050) is ideal.
Food technology
High hygiene requirements apply here. Corrosion-resistant, coated sheets (e.g. 5754 with a special surface) are customary.
Electrical industry / enclosure construction
For enclosures, brackets or technical covers, 6082 or 5754 sheets are usually used. They are stable, easy to machine and offer reliable properties for integration into technical systems.
Advertising technology / signage
In advertising technology, weight, appearance and ease of processing count. EN AW-1050, often anodised or laminated, is standard here – ideal for signs, displays or guidance systems.
Cut to size and surface finishing
Aluminium sheets can be cut to size to the millimetre – on request exactly to drawing, CAD file or dimension. Whether rectangular, round or with individual contours: modern cutting processes such as CNC milling, laser cutting or waterjet cutting enable the highest precision with minimal tolerances. Depending on requirements, holes, recesses or chamfers can also be incorporated directly, which saves time and costs in further processing.
A wide range of options is also available for surface finishing: in addition to anodising – which increases corrosion resistance and ensures a high-quality appearance – powder coating in various colours is also possible. For particularly sensitive or decorative applications, a protective film is also recommended to avoid scratches during transport or assembly.
These aspects should always be considered on a project-related basis and coordinated as early as possible in order to achieve optimum results in terms of function, appearance and processing.
Common mistakes in selection – and how to avoid them
- Wrong alloy: anyone buying purely on price risks material fracture or corrosion
- Not considered: processing steps: not every alloy can be welded or milled
- Surfaces not defined: visible surfaces require suitable quality and protection
How to make the right decision
The choice of the right aluminium sheet always depends on the intended use. Anyone who defines requirements clearly and knows the properties of the alloys makes well-founded decisions and saves later problems. If you are unsure, seek advice or request a cut to size for your project.
Make the right material decision: seek advice on the right aluminium sheet or configure your cut directly online.
Glossary
What does EN AW mean? "EN AW" stands for "European Norm Aluminium Wrought" – a designation for standardised wrought aluminium alloys in accordance with EN 573.
Overview: the right aluminium sheet by application
| Area of use | Recommended alloy | Surface |
|---|---|---|
| Mechanical engineering | 6082 | raw or anodised |
| Vehicle construction | 5754 | anodised or coated |
| Décor / furniture | 1050 | brushed / anodised |
| Food technology | 5754 | coated |
| Advertising technology | 1050 | laminated or anodised |
| Electrical / enclosure construction | 5754 / 6082 | raw, anodised |
FAQ
Which aluminium sheet is particularly stable? EN AW-6082 or 7075 offer high strength, depending on requirements.
Which sheet is suitable for outdoor use? Corrosion-resistant alloys such as 5754 or anodised 1050.
Which is better: 5754 or 6082? 5754 is more corrosion-resistant, 6082 considerably stronger. The application decides.
When should I choose anodised aluminium? When appearance, UV protection and surface hardness are important (e.g. façade, furniture).
