What is the Difference between 1100 and 1050 Aluminum?

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1100 and 1050 aluminum are both commercially pure aluminum alloys that share several similarities. They are known for their excellent corrosion resistance, high electrical conductivity, and good formability. These alloys are commonly used in applications where strength is not the primary requirement but attributes such as electrical conductivity and corrosion resistance are essential. Next, we will introduce the differences between 1100 and 1050 aluminum.

1100 Aluminum Overview

1100 aluminum is an aluminum alloy that is commercially pure, consisting of at least 99% aluminum. 1100 aluminum alloy belongs to the 1000 series aluminum. It is renowned for its exceptional formability, high resistance to corrosion, and good thermal and electrical conductivity. Being non-heat-treatable, it is well-suited for applications that prioritize workability and ease of fabrication. Industries such as packaging, electrical, and chemical commonly employ 1100 aluminum for manufacturing cooking utensils, heat exchangers, signage, and reflectors. The alloy’s affordability, lightweight nature, and ease of processing contribute to its popularity across diverse applications.

1100 aluminum sheet

1050 Aluminum Overview

1050 aluminum is a commercially pure alloy with a minimum aluminum content of 99.5%. It is distinguished by its extraordinary electrical conductivity, superior thermal conductivity, and favorable formability. Unlike some other alloys, 1050 aluminum cannot experience heat treatment and has relatively low strength. It is extensively used in industries such as electrical, chemical, and architectural, where its fantastic electrical and thermal conductivity properties are highly desirable. Common uses include electrical conductors, heat sinks, reflectors, and decorative projects. knowned for its affordability, lightweight composition, and ease of fabrication, 1050 aluminum is a multipurpose choice for many kinds of endeavors.

1050 aluminum sheet

1100 and 1050 Aluminum Properties Comparison

Property1100 Aluminum1050 Aluminum
Aluminum ContentMinimum 99%Minimum 99.5%
Thermal ConductivityHighHigh
Electrical ConductivityHighExcellent
Corrosion ResistanceExcellentGood
Heat TreatabilityNon-heat-treatableNon-heat-treatable
Common ApplicationsPackaging, electrical, chemicalElectrical, chemical, architectural
Typical UsesHeat exchangers, signs, reflectors, cooking utensilsElectrical conductors, heat sinks, reflectors, decorative applications

1100 and 1050 Aluminum Physical Properties Comparison

Property1100 Aluminum1050 Aluminum
Temper OptionsO, H12, H14, H16, H18O, H12, H14, H16, H18
Density (g/cm³)2.702.71
Melting Point (°C)660660
Thermal Conductivity237 W/m·K229 W/m·K
Electrical Conductivity53% IACS62% IACS
Coefficient of Thermal Expansion (10^-6/°C)23.123.5
Young’s Modulus (GPa)6969

1100 and 1050 Aluminum Chemical Composition Comparison

Property1100 Aluminum1050 Aluminum
Aluminum (Al)99.00% min99.50% min
Iron (Fe)0.05% max0.40% max
Silicon (Si)0.40% max0.25% max
Copper (Cu)0.05% max0.05% max
Manganese (Mn)0.05% max0.05% max
Zinc (Zn)0.10% max0.05% max
Titanium (Ti)
Other0.15% max (each), 0.05% max (total)0.05% max (each), 0.15% max (total)

1100 and 1050 Aluminum Application Comparison

1100 Aluminum

  • 1100 aluminum is a commercially pure aluminum alloy with excellent corrosion resistance and high thermal conductivity.
  • It is often used in applications where corrosion resistance is crucial, such as in chemical equipment, food and beverage containers, heat exchangers, and architectural components.
  • Due to its good formability and weldability, 1100 aluminum is also utilized in general sheet metal work, fan blades, nameplates, and reflective surfaces.

1050 Aluminum

  • 1050 aluminum is also a commercially pure aluminum alloy, known for its high electrical conductivity and good formability.
  • It is commonly employed in electrical applications, such as electrical conductors, transformer windings, busbars, and capacitor casings.
  • Additionally, 1050 aluminum finds use in general sheet metal fabrication, signage, reflectors, decorative trim, and various architectural applications where its formability and corrosion resistance are advantageous.
1100 aluminum sheet used in signage materials

1100 Aluminum VS 1050 Aluminum, How to Choice?

The choice between 1100 aluminum and 1050 aluminum depends on the specific requirements of the application. If corrosion resistance is a priority, 1100 aluminum is a better choice, while 1050 aluminum offers higher electrical conductivity. Both alloys have good formability characteristics, making them suitable for general sheet metal work and architectural applications. Consider the specific needs of your application, such as corrosion resistance, electrical conductivity, and other factors, to determine which alloy is better suited for your intended use.

Henan Yongsheng 1100 and 1050 Aluminum

At Henan Yongsheng aluminum, we take immense pride in being a leading aluminum manufacturer, specializing in the production of high-quality aluminum alloys. Our factory is equipped with state-of-the-art machinery and staffed by a team of skilled professionals committed to delivering excellence in every aspect of our operations. With stringent quality control measures in place throughout our manufacturing process, we ensure that our 1100 and 1050 aluminum alloys meet the highest industry standards. Our commitment to precision and reliability has earned us a stellar reputation among our customers, who rely on our products for their diverse applications across multiple industries.

Henan Yongsheng Aluminum factory


In summary, while 1100 and 1050 aluminum are both commercially pure alloys, their slight variations in chemical composition and mechanical properties make them suitable for different applications. Understanding these differences is crucial when selecting the appropriate aluminum alloy for a particular project. By considering factors such as chemical composition, mechanical properties, temper options, and desired applications, one can make an informed decision and ensure optimal performance and functionality. Whether it’s roofing, electrical components, signage, or general sheet metal fabrication, the choice between 1100 and 1050 aluminum will depend on specific project requirements and desired outcomes.

1100 and 1050 aluminum sheets


Does 1100 aluminum work harden?

1100 aluminum has low strength compared to other aluminum alloys, and it does not work harden significantly. This means that it does not gain additional strength through plastic deformation like some other alloys.

Is 1100 aluminum bendable?

1100 aluminum is known for its excellent formability, which means it can be easily bent and formed without cracking.

Can 1100 aluminum be extruded?

1100 aluminum can be extruded, although it is not as commonly used for extrusion applications as other aluminum alloys. The extrudability of 1100 aluminum depends on factors such as the specific extrusion process, the complexity of the shape, and the desired mechanical properties of the final product.

How do you anneal 1100 aluminum?

To anneal 1100 aluminum, it is typically heated to a temperature between 350°C and 450°C (660°F and 840°F) and then allowed to cool slowly. This process helps relieve internal stresses and restore the material’s softness, ductility, and workability. The exact annealing temperature and time may vary depending on the specific requirements and the size and thickness of the aluminum.

Can you weld 1100 aluminum?

Yes, 1100 aluminum can be welded using suitable welding techniques. It is important to control heat input and choose compatible filler materials to achieve successful welds.

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5052 aluminum coil
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