5154 aluminium alloy
# 5154 aluminium alloy

5154 aluminium alloy is an alloy in the wrought aluminium-magnesium family (5000 or 5xxx series). As an aluminium-magnesium alloy, it combines moderate-to-high strength with excellent weldability. 5154 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, 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 AlMg3.5, N5, and A95154. The alloy and its various tempers are covered by the following standards:

* ASTM B 209: Standard Specification for Aluminium and Aluminium-Alloy Sheet and Plate
* ASTM B 210: Standard Specification for Aluminium and Aluminium-Alloy Drawn Seamless Tubes
* ASTM B 211: Standard Specification for Aluminium and Aluminium-Alloy Bar, Rod, and Wire
* ASTM B 221: Standard Specification for Aluminium and Aluminium-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes
* ASTM B 547: Standard Specification for Aluminium and Aluminium-Alloy Formed and Arc-Welded Round Tube
* ISO 6361: Wrought Aluminium and Aluminium Alloy Sheets, Strips and Plates

## Chemical composition

The alloy composition of 5154 aluminium is:

* Aluminium: 94.4 to 96.8%
* Chromium: 0.15 to 0.35%
* Copper: 0.1% max
* Iron: 0.4% max
* Magnesium: 3.1 to 3.9%
* Manganese: 0.1%
* Silicon: 0.25% max
* Titanium: 0.2% max
* Zinc: 0.2% max
* Residuals: 0.15% max

The similar alloy A5254 differs only in impurities limits.

## Properties

Typical material properties for 5154 aluminium alloy include:

* Density: 2.66 $g/cm^3,$ or 166 $lb/ft^3.$
* Young's modulus: 69 GPa, or 10 Msi.
* Electrical conductivity: 32% IACS.
* Ultimate tensile strength: 230 to 330 MPa, or 33 to 48 ksi.
* Thermal Conductivity: 130 W/m-K.
* Thermal Expansion: 23.9 μm/m-K.
