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1050 Aluminium vs 1145 Steel – What’s the Difference

1050 Aluminium vs 1145 Steel

For anyone working in the industrial sector, choosing the right material is one of the most important decisions they’ll ever make. Regarding high-quality, lightweight and corrosion-resistant options, 1050 Aluminium and 1145 Steel are two types of metal that often come to mind. But what’s the difference between these two materials? In this blog post, we’ll closely examine the characteristics, applications, and prices of 1050 Aluminium and 1145 Steel.

What is 1050 Aluminium?

1050 Aluminium is an alloy of aluminium and other elements such as iron, copper, magnesium and manganese. It has excellent corrosion resistance, formability and weldability properties. It also has low electrical conductivity and very high ductility, making it ideal for forming applications. This type of aluminium is used mainly in transportation industries such as aircraft due to its lightweight qualities.

What is 1145 Steel?

1145 steel is medium-carbon steel with medium- to high-level hardness. It can be machined, formed, welded, and heat treated. It’s also very wear-resistant due to the added benefits from its carbon content ranging from 0.44–0.50%. This is an ideal choice for many applications due to its toughness and easy machinability. Additionally, it’s resistant to stress corrosion cracking and has great welding characteristics!

Difference Between 1050 Aluminium and 1145 Steel

Composition –

Both 1050 Aluminium and 1145 Steel are pure metals with nearly identical chemical compositions. 1050 Aluminium is made of 99.5% Aluminium, while 1145 Steel is made of 99.45% iron and 0.55% silicon.

Mechanical Properties –

While 1050 Aluminium is malleable and ductile, 1145 Steel is known for its strength, hardness and toughness. Due to these characteristics, 1145 Steel is often used in industries requiring high strength, such as automotive manufacturing. 1050 Aluminium, on the other hand, is widely used in industries where lightweight and corrosion-resistant materials are preferred, such as cooking utensils and electrical conductors.

Corrosion Resistance –

Both 1050 Aluminium and 1145 Steel are corrosion-resistant; however, 1050 Aluminium is known for its exceptional resistance level. This is because the surface of 1050 Aluminium oxidizes quickly upon exposure to air, forming a thin layer of aluminium oxide that protects the underlying metal from corrosion. On the other hand, while steel is less corrosion-resistant, it can be coated with zinc or other materials to enhance its corrosion resistance, making it ideal for structural applications.

Applications –

Due to its lightweight, easy formability, and excellent corrosion resistance, 1050 Aluminium is widely used in the aerospace, automotive, and construction industries. It is also commonly used in household products such as cooking utensils, lighting fixtures and electrical conductors. 1145 Steel, with its high strength, toughness and hardness, is often used to produce automotive components, tubes, pipes, and wiring.

Price –

Regarding cost, aluminium is often more expensive than steel due to its higher production costs. 1050 Aluminium’s high corrosion resistance and excellent formability make it typically pricier than steel. However, due to its exceptional strength, durability and toughness, 1145 Steel can be more expensive than 1050 Aluminium in certain applications.


1050 Aluminium and 1145 Steel may have similar chemical compositions, but their mechanical properties and applications differ greatly. Aluminium is a lightweight and corrosion-resistant metal that is ideal for use in the construction and automotive industries. On the other hand, steel is known for its strength and durability, making it ideal for applications requiring high strength, hardness and toughness. Knowing the differences between these materials is crucial for those in the industrial sector, as it helps to choose the right material for the right application, thereby ensuring the best outcome.

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