Aluminum 1050A Alloy (UNS A91050A)

Topics Covered

Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties


Aluminium / aluminum is a ductile, silverish white metal that is never found in its metallic form in nature. It occurs as bauxite, which is a mixture of aluminium oxides, iron oxides and clay.

Aluminium / aluminum alloys are extremely useful low-temperature alloys. Aluminium / aluminum 1050A alloy is a wrought alloy type with good corrosion resistance, high strength, high ductility, and a highly reflective finish.

The following datasheet will provide more details about aluminium / aluminum 1050A alloy.

Chemical Composition

The following table shows the chemical composition of aluminium / aluminum 1050A alloy.

Element Content (%)
Aluminum, Al ≥ 99.5
Silicon, Si ≤ 0.25
Zinc, Zn ≤ 0.070
Magnesium, Mg ≤ 0.050
Copper, Cu ≤ 0.050
Titanium, Ti ≤ 0.050
Manganese, Mn ≤ 0.050
Iron, Fe ≤ 0.40
Other (each) ≤ 0.030

Physical Properties

The physical properties of aluminium / aluminum 1050A alloy are outlined in the following table.

Properties Metric Imperial
Density 2.705 g/cm3 0.09772 lb/in3
Melting point 640°C 1184°F

Mechanical Properties

The mechanical properties of aluminium / aluminum 1050A alloy are tabulated below.

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

Thermal Properties

The thermal properties of aluminium / aluminum 1050A alloy are tabulated below.

Properties Metric Imperial
Thermal conductivity 121-193 W/mK 838-1338 BTU in/hr.ft².°F


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Aluminium / aluminum 1050A alloy can be welded using both TIG and MIG methods. The filler that is used is mostly aluminium / aluminum 4043 or 1050 alloy. Annealing of aluminium / aluminum 1050 alloy can be performed at 350°C (662°F). T4 is the commonly used tempering process for this alloy. The alloy is solution heat treated and naturally aged to gain a very stable condition.


Aluminium / aluminum 1050A alloy is chiefly used in the following areas:

  • Kitchenwares
  • Packaging
  • Boiler manufacturing
  • Heat transfer devices
  • Automotive industry
  • Architecture and paneling
  • General sheet metal work
  • Food industrial containers
  • Cable sheathings
  • Lamp reflectors
  • Cabinets, vessels, and appliances
  • Chemical and pharmaceutical industries


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