Nov 15 2012
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations
Fabrication and Heat Treatment
Machinability
Forming
Welding
Forging
Hot Working
Cold Working
Annealing
Hardening
Applications
Introduction
Aluminium / Aluminum alloys are known for their 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 their strength. However, the strength of the aluminium / aluminum alloys can be enhanced at subzero temperatures, thus making them ideal low-temperature alloys.
The aluminium / aluminum 5252 alloy is a wrought, non-heat treatable alloy. The 5252 alloy has medium strength but retains its excellent corrosion resistance. The following datasheet will provide more details about the aluminium / aluminum 5252 alloy.
Chemical Composition
The following table shows the chemical composition of the aluminium / aluminum 5252 alloy.
|
Element |
Content (%) |
|
Aluminium / Aluminum, Al |
97.5 |
|
Magnesium, Mg |
2.5 |
Physical Properties
The physical properties of the aluminium / aluminum 5252 alloy are outlined in the following table.
|
Properties |
Metric |
Imperial |
|
Density |
2.6-2.8 g/cm3 |
0.0939-0.1011 lb/in3 |
Mechanical Properties
The mechanical properties of the aluminium / aluminum 5252 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 the aluminium / aluminum 5252 alloy are tabulated below.
|
Properties |
Conditions |
|
T (ºC) |
Treatment |
|
Thermal conductivity |
138 W/mK |
25 |
All |
Other Designations
Equivalent material to the aluminium / aluminum 5252 alloy is ASTM B209.
Fabrication and Heat Treatment
Machinability
The machinability of the aluminium / aluminum 5252 alloy is poor when compared with other aluminium / aluminum alloys. If machining is performed, lubricating oil must be used. However, the finish tends to be ‘gummy’.
Forming
The aluminium / aluminum 5252 alloy can be hot and cold formed very easily.
Welding
The aluminium / aluminum 5252 alloy is weldable using commercial welding methods. The preferred methods are TIG and /or MIG. Brazing method is not suitable.
Forging
The aluminium / aluminum 5252 alloy is forgeable from 510 to 371°C (950 to 700°F).
Hot Working
The aluminium / aluminum 5252 alloy can be hot worked if required in the range of 482°C (900°F) down to 260°C (500°F).
Cold Working
The aluminium / aluminum 5252 alloy can be easily cold worked using the conventional methods. It is suited for cold forming by blanking, drawing, or bending.
Annealing
The aluminium / aluminum 5252 alloy can be annealed at 343°C (650°F) and then air cooled.
Hardening
The aluminium / aluminum 5252 alloy can be hardened by cold working only.
Applications
The aluminium / aluminum 5252 alloy is widely used in the manufacture of automotive trim and appliances.