Aluminium / Aluminum 5050 Alloy (UNS A95050)

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations
Fabrication and Heat Treatment
     Machinability
     Forming
     Welding
     Hot Working
     Cold Working
     Annealing
     Hardening
Applications

Introduction

Aluminium / Aluminum  alloys have excellent corrosion resistance. They are sensitive to high temperatures in the range of 200 to 250°C (392 to 482°F), and could lose some of their strength. However, the strength of Aluminium / Aluminum  alloys can be enhanced at subzero temperatures, making them ideal low-temperature alloys.

Aluminium / Aluminum  5050 alloy is a wrought type alloy. It has excellent workability and is a non-heat treatable alloy. The following datasheet will provide more details about Aluminium / Aluminum  5050 alloy.

Chemical Composition

The following table shows the chemical composition of Aluminium / Aluminum  5050 alloy.

Element Content (%)
Aluminium / Aluminum , Al 98.6
Magnesium, Mg 1.4

Physical Properties

The physical properties of Aluminium / Aluminum  5050 alloy are outlined in the following table.

Properties Metric Imperial
Density 2.69 g/cm3 0.0971 lb/in³

Mechanical Properties

The mechanical properties of Aluminium / Aluminum  5050 alloy are tabulated below.

Properties Metric Imperial
Elastic modulus 70-80 Gpa 10152-11603 ksi
Poisson’s ratio 0.33 0.33

Thermal Properties

The thermal properties of Aluminium / Aluminum  5050 alloy are tabulated below.

Properties Conditions
T (ºC) Treatment
Thermal conductivity 191 W/mK 25 H38
Thermal expansion 23.6 x 10-6/°C 20-100 -

Other Designations

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Equivalent materials to the Aluminium / Aluminum  5050 alloy are as follows:

  • ASTM B209
  • ASTM B210
  • ASTM B313
  • ASTM B483
  • ASTM B547
  • ASTM B548
  • SAE J454

Fabrication and Heat Treatment

Machinability

The machinability of Aluminium / Aluminum  5050 alloy is rated as fair, especially in the annealed condition. However, in cold worked conditions, the machinability is much better than that of the annealed material. Lubricants should be used while machining.

Forming

Formability of  Aluminium / Aluminum  5050 alloy is excellent in the annealed or H32 temper form. The 5050 alloy can be formed with certain amount of difficulty when it is in the harder cold worked conditions.

Welding

Welding of these alloys can be easily performed using all commercial methods. Brazing is also possible after experimental trials to develop parameters are completed.

Hot Working

Hot working can be performed on Aluminium / Aluminum  5050 alloy at 371 to 204°C (700 to 400°F).

Cold Working

Cold working capacity of  Aluminium / Aluminum  5050 alloy is excellent especially in the annealed temper form.

Annealing

After the Aluminium / Aluminum  5050 alloy is extensively cold worked, annealing can be performed at 343°C (650°F) for a suitable amount of time so as to ensure thorough heating and then it can be air cooled.

Hardening

Aluminium / Aluminum  5050 alloy can be cold worked to ensure hardenability.

Applications

Aluminium / Aluminum  5050 alloy is widely used in the manufacture of coiled tubes, refrigerator trim, and builder's hardware.

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