ThePipingMart Blog Grades Aluminium 1050A Alloy (UNS A91050A) – Composition, Properties, and Uses

Aluminium 1050A Alloy (UNS A91050A) – Composition, Properties, and Uses

1050A Aluminium Alloy

Aluminium is one of the most abundant materials on earth, and it is used in various applications, from construction to electronics. However, not all aluminium alloys are created equal. One of the most commonly used alloys in industrial and commercial applications is the 1050a aluminium alloy. In this blog post, we will delve into the features, mechanical, and physical properties of 1050a aluminium alloy.

1050A Aluminium Alloy Composition

The composition of 1050a aluminium alloy includes 99.5% aluminium and 0.5% other elements such as magnesium, iron, copper, and zinc. This makes it one of the purest alloys of aluminium available. Due to its high purity, 1050a aluminium alloy has excellent corrosion resistance, high electrical conductivity, and good thermal conductivity, making it ideal for applications in the electrical and electronic industries.

Chemical Element % Present
Manganese (Mn) 0.0 – 0.05
Iron (Fe) 0.0 – 0.40
Copper (Cu) 0.0 – 0.05
Magnesium (Mg) 0.0 – 0.05
Silicon (Si) 0.0 – 0.25
Zinc (Zn) 0.0 – 0.07
Titanium (Ti) 0.0 – 0.05
Other (Each) 0.0 – 0.03
Aluminium (Al) Balance

1050A Aluminium Alloy Physical Properties

Regarding physical properties, 1050a aluminium alloy has a density of 2.7 g/cm³, which is relatively low compared to other metals like steel. This lightweight nature makes it highly popular in transportation, particularly car body panels and aeroplane fuselages. Additionally, 1050a aluminium alloy has a low melting point of 660°C, making it easy to work using various fabrication methods.

Physical Property Value
Density 2.71 g/cm³
Melting Point 650 °C
Thermal Expansion 24 x10^-6 /K
Modulus of Elasticity 71 GPa
Thermal Conductivity 222 W/m.K
Electrical Resistivity 0.0282 x10^-6 Ω .m

1050A Aluminium Alloy Mechanical Properties

Regarding mechanical properties, 1050a aluminium alloy has a tensile strength of 50-95 MPa and a yield strength of 20 MPa. This low strength makes it unsuitable for structural applications that require high strength and rigidity. However, it has a high elongation capacity of up to 45%, which means it can be formed into complex shapes and designs.

Properties Metric Imperial
Tensile strength (@diameter 12.7 mm/0.500 in) 75 MPa 10877 psi
Elongation at break 32% 32%
Elastic modulus 73 GPa 10587 ksi
Shear strength 50 MPa 7251 psi
Hardness, Brinell 20 20
Hardness, Vickers 22 22

1050A Aluminium Alloy Uses

The uses of 1050a aluminium alloy are numerous and varied. Due to its excellent electrical and thermal conductivity, it is commonly used in the electrical industry for making electrical conductors, transformers, and capacitors. It also produces consumer goods such as kitchen utensils, packaging foils, and cans. Additionally, it can be used in the construction and transportation industries for making lightweight components and parts.

1050A Aluminium Alloy Heat Treatment

As a non-heat-treatable alloy, 1050a aluminium alloy cannot be hardened by heat treatment. However, it can be strengthened through cold working, which involves deforming the metal at room temperature. This process can improve its hardness, tensile strength, and mechanical properties.

1050A Aluminium Alloy Hardness

The hardness of 1050a aluminium alloy is generally low, with a rating of about 22 on the Brinell hardness scale. However, this can be increased through cold working or the addition of other elements. It can improve strength and hardness with other alloys, such as manganese or silicon.


1050a aluminium alloy is a versatile, lightweight, and corrosion-resistant material that can be used in various applications. While it may lack the strength and hardness of other alloys, it still has unique properties that make it ideal for specific uses. Understanding the properties and uses of 1050a aluminium alloy can help manufacturers and engineers decide when and how to use it.

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