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Aluminium 5083

Lightness, ease to weld and high chemical resistance are the main features of this alloy. It is used for parts to be joined together or if excellent corrosion resistance is required over long periods, such as in marine environments. 

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Aluminium 5083 cnc machining


  • High oxidation and corrosion resistance
  • High fatigue resistance
  • Very good weldability


  • Thin walls complex to machine
  • Low mechanical resistance


  • Machining process: CNC machining
  • Tolerance: ISO 2768-1 fine (f) or medium (m) class. Info
  • Max size: 500 x 500 x 400 mm; 19.7 x 19.7 x 15.7 in
  • Lead time: <4 days
HP-certified 1


4.81 / 5 from 281 reviews



Corrosion and oxidation resistance

It is known for its excellent resistance to corrosion and oxidation. This is due to the high levels of magnesium and other trace elements in the alloy, which create a protective oxide layer on the metal surface, preventing further corrosion and degradation.


high fatigue resistance

This alloy is a typical choice for structural applications involving cyclic loads. Thanks to its fine-grained structure and high content of magnesium, it increases strength and durability under repeated stress.


good weldability

Aluminium 5083 is easily weldable, with excellent strength and weld quality. This is due to the low levels of impurities and alloying elements, which results in it being less susceptible to cracks and other defects during welding. In addition, the thermal conductivity of the alloy allows for efficient heat dissipation during the welding process.



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Aluminium 5083 is an important metal alloy, highlighted for its exceptional strength and extraordinary ability to resist corrosion. A perfect combination of lightness and durability, this alloy is distinguished by its key element, magnesium, which provides superior resistance in marine and industrial environments.


Aluminium 5083 has impressive mechanical properties, helping to define it as an excellent material in many aspects.

High resistance to oxidation and corrosion: Aluminium alloy 5083 is distinguished by its extraordinary ability to resist oxidation and corrosion. This characteristic becomes crucial, especially in marine and industrial environments, where aggression from the weather could compromise the durability of other materials.

High fatigue resistance: The material proves to be resistant to repeated stresses, ensuring durability without significant failure. This fatigue resistance is a key feature, particularly appreciated in applications subject to dynamic or cyclic loads.

Excellent weldability: This aluminium also offers a significant advantage in terms of weldability. The ability to be machined and welded with ease makes it an ideal choice in applications requiring the creation of complex structures or the casting of separate components.

These combined elements give Aluminium 5083 a profile of strength and durability that makes it an outstanding option in scenarios where strength is essential.


Despite the positive aspects of its extraordinary properties, Aluminium 5083 is not excluded from some specific challenges.

Thin walls complex to machine: Machining thin walls can prove to be a complex undertaking, especially in contexts requiring intricate geometries. The strength that characterises aluminium may make machining thin sections a delicate operation, requiring specialised techniques to ensure optimal results.

Low mechanical strength: Compared to other alloys, this material may have relatively low mechanical strength in some situations. This should be carefully considered in applications where high structural strength is a priority. However, it is essential to consider that its strength in terms of corrosion resistance could still offset this challenge in certain contexts.


Aluminium 5083 stands out as an undisputed protagonist in various industries, contributing significantly to several key applications.

Shipbuilding: In the shipbuilding sector, this aluminium plays a key role. Its high strength and remarkable resistance to corrosion in marine environments make it the ideal choice for building hulls, decks and superstructures of vessels, ensuring durability and reliability against weathering and salt water.

Aerospace Industry: In the aerospace industry, Aluminium 5083 is widely used for its lightness and strength. The construction of aircraft wings and fuselages benefits from the strength-to-weight ratio of this alloy, contributing to efficient and high-performance aircraft.

Automotive Industry: In the automotive industry, this material becomes the preferred choice for various components. Its high strength and corrosion resistance make it suitable for the production of fuel tanks and body panels, helping to ensure the safety and durability of vehicles of various kinds.

Construction Industry: In the construction industry, Aluminium 5083 finds application in bridges and offshore platforms. Its strength and lightness make it a key element in the construction of structures that require durability and reliable performance, especially in marine environments or exposed to adverse weather conditions.


In conclusion, Aluminium 5083 emerges as an outstanding metal alloy, combining excellent mechanical properties with outstanding corrosion resistance. Due to the predominant presence of magnesium, this alloy establishes itself as an ideal choice in key sectors such as shipbuilding, aerospace, automotive and construction.

Its oxidation and corrosion resistance properties, together with its remarkable fatigue strength and excellent weldability, give aluminium a profile of strength and durability. These characteristics become crucial in marine and industrial environments, where material strength is essential to ensure the long life of structures.

However, this material is not immune to certain challenges, such as thin-wall machining and potentially lower mechanical strength compared to other alloys. These aspects require special attention in applications where geometric complexity or high structural strength are priorities.

Ultimately, Aluminium 5083 stands out as a versatile and reliable choice in a diverse range of industries. Its predominant presence in applications requiring durability, light weight and corrosion resistance underlines its crucial role in the creation of advanced products and infrastructures. Continuous innovation and evolution in its use promise to maintain its prominent position in the metal alloy universe.

"I recently had my parts made of Aluminum 5083 by Weerg and I was extremely pleased with the results. The quality of the parts was top-notch, and the price was reasonable, considering the precision and attention to detail put into the manufacturing process."


Tensile breaking load 275 MPa
Modulus of elasticity 72 GPa
Elongation at break 14%
Density 2,66 g/cm³
Melting temperature 614°C
Hardness 76 Brinell
Yield Strength 115 MPa


"Not only was the quality of the parts excellent, but the Customer Service provided by Weerg was also very nice. The whole team has been responsive and helpful throughout the process, answering my questions and ensuring that the requirements were met."



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