Aluminium / Aluminum 5252 Alloy (UNS A95252)

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

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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.

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