Sep 13 2012
Topics Covered
IntroductionChemical CompositionPhysical PropertiesMechanical PropertiesThermal PropertiesOther DesignationsFabrication and Heat Treatment Machinability Forming Welding Heat Treatment Forging Cold Working Annealing AgingApplications
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.