Aluminium/Aluminum 4032 Alloy (UNS A94032)

Topics Covered

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

Introduction

Aluminium/Aluminum alloys are known for strong corrosion resistance. These alloys are sensitive to high temperatures ranging between 200 and 250°C (392 and 482°F), and tend to lose some of its strength. However, the strength of Aluminium/Aluminum alloys can be enhanced at subzero temperatures, making them ideal low-temperature alloys.

Aluminium/Aluminum 4032 alloy is a wrought alloy type. The following datasheet will provide more details about Aluminium/Aluminum 4032 alloy.

Chemical Composition

The following table shows the chemical composition of Aluminium/Aluminum 4032 alloy.

Element Content (%)
Aluminum, Al 85
Silicon, Si 12.20
Magnesium, Mg 1.0
Copper , Cu 0.90
Nickel, Ni 0.9

Physical Properties

The physical properties of Aluminium/Aluminum 4032 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 4032 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 4032 alloy are tabulated below.

Properties Conditions
T (ºC) Treatment
Thermal conductivity 155 W/mK 25 O
Thermal expansion 19.4 x 10-6/ºC 20-100 -

Other Designations

Equivalent materials to Aluminium/Aluminum 4032 alloy are as follows:

  • ASTM B247
  • QQ A-367
  • SAE J454

Fabrication and Heat Treatment

Machinability

Machinability of Aluminium/Aluminum 4032 alloy is rated as fair to good. Machining should be performed using lubricating oils.

Forming

Aluminium/Aluminum 4032 alloy is a forging alloy and can be formed using hot die forging.

Welding

Aluminium/Aluminum 4032 alloy is weldable and the recommended method is inert-gas arc welding method. The gas welding method is not suitable.

Heat Treatment

Solution heat treatment of Aluminium/Aluminum 4032 alloy is performed at 510°C (950°F) for 1 to 12 hours based on the thickness of the section.

Forging

As Aluminium/Aluminum 4032 alloy is a forging alloy, hot die forging can be easily performed in the range of 510 to 371°C (950 to 700°F).

Cold Working

Aluminium/Aluminum 4032 alloy cannot be cold worked.

Annealing

Annealing of Aluminium/Aluminum 4032 alloy can be performed at 413°C (775°F) for a certain amount of time to ensure thorough heating, and then the alloy has to be cooled in a controlled manner at rate of 10°C (50°F) per hour to 204°C (400°F). Finally it is air cooled.

Aging

Aluminium/Aluminum 4032 alloy can be aged (T6 temper) by solution heating at 510°C (950°F), cold water quenching, heating at 171°C (340°F) for 10 hours and finally air cooling.

Applications

Aluminium/Aluminum 4032 alloy is widely used in the manufacture of pistons.

Date Added: Aug 30, 2012 | Updated: Jun 11, 2013
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