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Aluminium 1050 vs 5083 – What’s the Difference

Aluminium 1050 vs 5083

Aluminium is a popular alloy metal renowned for its strength, flexibility, and corrosion-resistant properties—different grades of aluminium offer distinct features for specific applications. Two popular grades of aluminium are 1050 and 5083, which are widely used in construction, transportation, and marine industries. However, it can be challenging to identify their differences and suitability when choosing between them. This blog aims to enlighten you on the critical properties and applications of aluminium 1050 and 5083.

Difference Between Aluminium 1050 and 5083

Composition and Properties

Aluminium 1050 is an unalloyed aluminium with 99.5% purity. It has low strength and high electrical conductivity, making it an ideal material for electrical and chemical applications. Additionally, 1050 has excellent thermal conductivity and weldability, which makes it a suitable option for heat transfer applications, reflectors, and sheet metal forming. However, due to its low strength, it is not suitable for high-stress applications.

Aluminium 5083, on the other hand, is a high-strength alloy with a 5.2% magnesium content. Its strength, and corrosion-resistant properties make it suitable for marine and offshore applications, including shipbuilding, boat hulls, and offshore structures. Additionally, 5083 has high welding and formability capabilities, making it useful in sheet metal fabrications.

Mechanical Properties

The tensile strength of Aluminium 1050 ranges from 55MPa to 95MPa, with an elongation of 30% to 45%. 5083, on the other hand, has a tensile strength of 270MPa to 350MPa, with an elongation of 12% to 18%. Additionally, 5083 has better fatigue resistance and fracture toughness than 1050.

Corrosion Resistance

Aluminium 1050 has excellent corrosion resistance to chemical environments and the atmosphere. However, it corrodes quickly in seawater and salt spray conditions. In contrast, 5083 has high corrosion-resistant properties, making it ideal for marine and offshore applications.


Due to its low strength and excellent thermal conductivity, aluminium 1050 is ideal for electrical and chemical applications, including transformer windings, heat exchangers, packaging, and capacitor foils. In contrast, 5083 is ideal for marine and offshore applications, where it can withstand harsh saltwater conditions. It is used in shipbuilding, boat hulls, submarines, offshore platforms, and pipes.


In summary, Aluminium 1050 and 5083 are two popular grades of aluminium with distinct properties and applications. While 1050 suits electrical and chemical applications, 5083 is ideal for the marine and offshore usage. When choosing between them, it’s essential to consider the mechanical properties, corrosion resistance, and composition to ensure you select the right grade for your specific application.

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