5454 aluminium alloy

5454 aluminium alloy is an alloy in the wrought aluminium-magnesium family (5000 or 5xxx series).  It is closely related to 5154 aluminium alloy.  As an aluminium-magnesium alloy, it combines moderate-to-high strength with excellent weldability.  Like 5154, 5454 aluminium is commonly used in welded structures such as pressure vessels and ships.  As a wrought alloy, it can be formed by rolling, extrusion, and forging (although forging is not common), but not casting.  It can be cold worked to produce tempers with a higher strength but a lower ductility.  It is generally not clad. 

Alternate names and designations include 3.3537, N51, and A95454.  The alloy and its various tempers are covered by the following standards:

 ASTM B 209: Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate
 ASTM B 221: Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes
 ASTM B 547: Standard Specification for Aluminum and Aluminum-Alloy Formed and Arc-Welded Round Tube
 ISO 6361: Wrought Aluminium and Aluminium Alloy Sheets, Strips and Plates

Chemical composition

The alloy composition of 5454 aluminium is:

 Aluminium: 94.5 to 97.1%
 Chromium: 0.05 to 0.20%
 Copper: 0.1% max
 Iron: 0.4% max
 Magnesium: 2.4 to 3.0%
 Manganese: 0.5 to 1.0%
 Silicon: 0.25% max
 Titanium: 0.2% max
 Zinc: 0.25% max
 Residuals: 0.15% max

Properties

Typical material properties for 5454 aluminum alloy include:

 Density: 2.69 g/cm3, or 168 lb/ft3. 
 Young's modulus: 70 GPa, or 10 Msi. 
 Electrical conductivity: 34% IACS. 
 Ultimate tensile strength: 240 to 300 MPa, or 35 to 44 ksi. 
 Thermal Conductivity: 130 W/m-K.
 Thermal Expansion: 22.3 μm/m-K.

References

Category:Aluminium–magnesium alloys