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Aluminium 1100 vs. 1050 – What’s the Difference

Aluminium 1100 vs. 1050

When you’re looking for a specific type of metal, the sheer number of options can be overwhelming. Aluminium is no exception. There are myriad aluminium alloys available, each with its own unique characteristics and uses. Two such alloys are Aluminium 1100 and 1050, both popular choices among manufacturers. Let’s compare the two and see which one is best suited to your project needs.

Aluminium 1100

aluminum 1100 is a soft, non-heat-treatable and low-strength alloy that offers superior corrosion resistance and formability when in annealed condition. It is a pure aluminium alloy with a minimum aluminium content of 99.00%. It does not make heat treatable, but it can be cold-worked to produce tempers with a higher strength but lower ductility.

Aluminium 1050

aluminum 1050 is a commercial grade of aluminium. It is highly pure, with a purity of 99.5% or more. It has excellent electrical conductivity, corrosion resistance, and workability. It can be drawn into wire, rolled into a thin sheet, or cast into ingots.

Difference Between Aluminium 1100 and 1050

The main difference between the two alloys is in their properties. Aluminium 1100 has excellent corrosion resistance and formability, but it is not heat-treatable. On the other hand, aluminum 1050 has good electrical conductivity, corrosion resistance, and workability, but it cannot be heat treated.

Properties & Uses

Aluminum 1100 is a commercially pure aluminum alloy that contains 99.6% aluminium by weight and offers excellent strength, ductility, formability, weldability and corrosion resistance. It is typically used in chemical processing equipment, food industry containers, decorative trim components and architectural applications such as window frames and door frames. The alloy also offers good thermal conductivity and electrical conductivity, making it ideal for use in automotive parts or any other component requiring a high level of strength-to-weight ratio.

Aluminum 1050 has slightly higher amounts of aluminum than Aluminium 1100 (99.5% compared to 99%) but still boasts many of the same properties. This alloy had excellent ductility and formability when cold worked yet remains strong at elevated temperatures up to 200°C (392°F). It is often used in cryogenic applications due to its low freezing point (−240°C or −400°F) as well as in electronics components due to its highly conductive nature. This alloy also provides exceptional fatigue resistance and corrosion resistance when exposed to atmospheric conditions or seawater environments over long periods of time.


The main difference between 1100 and 1050 aluminum is that 1100 aluminium contains 99% aluminium while 1050 aluminium contains 99.5% aluminum. Additionally, 1100 aluminium has a lower Strength-to-Weight ratio than 1050 aluminum.


Both Aluminium 1100 and 1050 offer excellent qualities for a variety of projects and applications yet have subtle differences that make them suitable for different purposes. If you need an aluminium alloy that offers a superior strength-to-weight ratio without sacrificing any electrical or thermal conductivity, then Aluminium 1100 would be the ideal choice for you; however, if you require an alloy with heightened corrosion resistance or exceptional cryogenic performance, then aluminum 1050 might be the better option for your project needs! Ultimately deciding which one will work best for your purpose requires careful consideration of your specific requirements before making your final selection!

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