ThePipingMart Blog Grades 1050 Aluminium Alloy (UNS A91050) – Composition, Properties, & Uses

1050 Aluminium Alloy (UNS A91050) – Composition, Properties, & Uses

Aluminum 1050

What is Aluminum 1050?

Aluminum is one of the most versatile metals in the world. It is lightweight, corrosion-resistant, and has excellent electrical and thermal conductivity. One of the most popular aluminium alloys is 1050, which has many uses in various industries due to its excellent properties. Let’s look at aluminum 1050 and explore its many uses and properties.

What Forms is 1050 Aluminium Alloy Available at Piping Mart?

  • Aluminium Alloy 1050
  • Aluminium Alloy 1050 Nut
  • Aluminium Alloy 1050 Bar
  • Aluminium Alloy 1050 Bolt
  • Aluminium Alloy 1050 Pipe
  • Aluminium Alloy 1050 Screw
  • Aluminium Alloy 1050 Tubing
  • Aluminium Alloy 1050 Valves
  • Aluminium Alloy 1050 Washers
  • Aluminium Alloy 1050 Flanges
  • Aluminium Alloy 1050 Fasteners
  • Aluminium Alloy 1050 Sheet Plates

1050 Aluminium Alloy Composition

UNS A91050 has 99% minimum aluminum content by weight. It also contains iron (0.4%) and silicon (0.5%). This combination gives it superior corrosion resistance as well as high fatigue strength. The alloy contains manganese (0.05%) and chromium (0.2%). These elements help improve the alloy’s mechanical properties, such as its strength and durability.

Element % Present
Cu 0-0.05
Mg 0-0.05%
Si 0-0.25%
Fe 0-0.4%
Mn 0-0.05%
Zn 0-0.07%
Ti 0-0.05%
Al Balance

1050 Aluminium Alloy Physical Properties

The physical properties of Alloy 1050 aluminum are determined by its chemical composition. Its melting point is 655°C (1,201°F), while its boiling point is 2,500°C (4,530°F). The alloy has an ultimate tensile strength of 155MPa (22,500psi) and a yield strength of 135MPa (19,600psi). It also has an elongation rate of 30%.

Property Value
Density 2.71 kg/m3
Melting Point 650°C
Modulus of Elasticity 71 GPA
Electrical Resistivity 0.282 x 10-6 Ω.m
Thermal Conductivity 222 W/m.K
Thermal Expansion 24 x 10-6/K

Aluminium Alloy UNS A91050 Mechanical Properties

AL 1050 has excellent formability and weldability due to its low carbon content (<0.10%). It can be cold-formed or hot-formed, depending on your application needs. UNS A91050 also offers good machinability with a Brinell hardness rating between 10-12 HBW/HBV/HBS. Additionally, it has good fatigue strength, making it perfect for applications requiring frequent flexing or bending, such as springs or brackets.

BS EN 485-2:2008
0.2mm to 6.00mm
Property Value
Proof Stress 85 Min MPa
Tensile Strength 105 – 145 MPa
Hardness Brinell 34 HB
Elongation A 12 Min %

1050 Aluminium Alloy Equivalent

European Standard BS (OLD) USA (AA) GERMANY (DIN) ISO IS Canadian
EN AW-1050 A 1E 1050 Al99.5 Al99.5 19500, 19501 1 S

1050 Aluminium Alloy Specifications

  • ASTM B446 / ASME SB446
  • ASTM B443 / ASME SB443
  • ASTM B564 / ASME SB564
  • ASTM F467 / F467M
  • ASTM F468 / F468M
  • AMS 5666
  • BS 3076
  • Alloy 600
  • AA1050A
  • S1B
  • A91050

1050 Aluminium Alloy Applications 

Aluminum alloy 1050 is used for:

  • Chemical process plant equipment
  • Food industry containers
  • Pyrotechnic powder
  • Architectural flashings
  • Lamp reflectors
  • Cable sheathing

Alloy 1050 Corrosion Resistance

Aluminum 1050 offers outstanding corrosion resistance due to its high aluminum content (>99%). This makes it ideal for use in marine environments or other areas regularly exposed to moisture or humidity. Additionally, the alloy has good heat treatability, allowing it to maintain its properties even after exposure to extreme temperatures over extended periods.

AL 1050 Heat Treatment

Heat treatment can modify the mechanical properties of Alloy 1050 without altering its chemical composition too much. Heat treatment involves heating the alloy to specific temperatures before cooling it down rapidly so that certain crystalline structures form within the metal matrix, giving it desired characteristics such as increased hardness or improved ductility. This makes heat treating a great option for improving the performance characteristics of aluminum 1050 without having to resort to expensive alloys with higher price tags.


Aluminum 1050 is one of the most popular alloys used in industry today thanks to its impressive combination of chemical, physical, mechanical, and corrosion resistance properties. Its low cost and easy availability make it ideal for applications where cost savings are important yet performance requirements still need to be met. For those who need even more from their aluminium alloys, heat treatment can further refine specific characteristics without switching materials entirely. All things considered, aluminum 1050 can meet almost any requirement when looking for an economical yet highly effective material solution.

Related Post