Aluminium 6082 vs 5083 – What’s the Difference

Aluminium 6082 vs 5083

Aluminium is one of the most abundantly available metals on the earth. Its versatility and numerous advantageous properties make it an ideal metal for various applications. Aluminium alloys are used extensively in engineering to create strong, lightweight, corrosion-resistant, and easily formable products. However, with a wide range of aluminium alloys available in the market, selecting the right one for your application can be confusing. In this blog post, we will compare and contrast two popular aluminium alloys, 6082 and 5083, to help you make an informed decision.

Difference Between Aluminium 6082 and 5083


Aluminium 6082, also called structural grade alloy, has a composition of 0.7-1.3% magnesium, 0.4-1.0% silicon, 0.1% maximum iron, 0.1% maximum zinc, and less than 0.25% of other elements. In comparison, 5083 aluminium has a composition of 4.0-4.9% magnesium, 0.40% maximum manganese, 0.50% maximum iron, 0.25% maximum zinc, 0.25% maximum silicon, and 0.15% chromium.

Mechanical Properties:

Aluminium 6082 alloy has excellent corrosion resistance and high strength. It offers good weldability, but its formability could be much better. On the other hand, 5083 aluminium alloy is known for its exceptional strength and excellent corrosion resistance and is widely used in marine applications. It has good weldability and formability and is ideal for structural and pressure vessels.


Aluminium 6082 is used for structural applications, such as extrusions, frames, and platforms and is typically chosen in aerospace, marine, and transportation sectors, where its high strength and corrosion resistance are required. On the other hand, 5083 aluminium is most commonly used in marine and shipbuilding applications, as well as for cryogenics and missile components, due to its high strength and corrosion resistance properties.


Both the alloys can be machined efficiently using conventional methods. However, Aluminium 6082 has slightly better machinability than 5083 aluminium, which makes it the preferred choice for machining applications.


Cost is an essential factor when selecting an alloy for any application. Although the prices for both aluminium alloys fluctuate constantly, 6082 aluminium is generally considered more affordable than 5083 aluminium.


In conclusion, Aluminium 6082 and 5083 are both excellent aluminium alloys, but they are designed to serve different purposes. If you require a high-strength alloy for structural purposes, such as in aerospace and transportation industries, or require good machinability, Aluminium 6082 could be the perfect fit. On the other hand, if your application involves marine or shipbuilding or cryogenics, you should prefer Aluminium 5083 due to its superior corrosion resistance and strength. By understanding each alloy’s composition, properties, and applications, you can make an informed decision and select the right aluminium alloy for your intended application.

Minal Jogale

Minal Jogale

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