Aluminium Alloy - BS-L - L44 'F'

L44 'F'

Nameplates, traffic (road) signs, architectural paneling. Welded tubes, chemical industry, irrigation. Offshore applications, welded structures. Pressure vessels, aircraft components.

Characteristic Properties:
Very good corrosion resistance to seawater and marine and industrial atmosphere. Very good weldability. Medium high strength alloy for sheet products slightly lower than 5086. Medium high fatigue strength. Good cold formability.

Chemical Composition

Spec: BS 5L44(1985)

Alloy L44

Chemical Element % Present
Others (Total) 0.0 - 0.15
Zinc (Zn) 0.0 - 0.15
Titanium (Ti) 0.0 - 0.15
Copper (Cu) 0.0 - 0.15
Silicon (Si) 0.0 - 0.40
Chromium (Cr) 0.0 - 0.15
Magnesium (Mg) 1.70 - 2.40
Iron (Fe) 0.0 - 0.50
Manganese (Mn) 0.10 - 0.50
Other (Each) 0.0 - 0.05
Aluminium (Al) Balance


Spec: BS 5L44(1985)

Forging Stock -

Mechanical PropertyValue
Elongation A50 mm 14 Min %
Elongation A 16 Min %
Tensile Strength 170 Min N/mm2
0.2% Proof Stress 60 Min N/mm2

Alloy Designations

Aluminium alloy L44 - 5251 is covered by Standard BS EN 5L44 (1985) - Now Obsolete

Temper Types

The most common tempers for L44 - 5251 aluminium forging stock as as-forged ('F')

  • F - As fabricated

Supplied Forms

L44 - 5251 aluminium is supplied as forging stock made from cast billet, extrusion or rolled plate

  • Bar
  • Extrusions
  • Forgings
  • Castings
  • Plate
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Last Datasheet Revision

9 January 2014


This Data is indicative only and as such is not to be relied upon in place of the full specification. In particular, mechanical property requirements vary widely with temper, product and product dimensions. All information is based on our present knowledge and is given in good faith. No liability will be accepted by the Company in respect of any action taken by any third party in reliance thereon.

Please note that the 'Datasheet Update' date shown above is no guarantee of accuracy or whether the datasheet is up to date.

The information provided in this datasheet has been drawn from various recognised sources, including EN Standards, recognised industry references (printed & online) and manufacturers’ data. No guarantee is given that the information is from the latest issue of those sources or about the accuracy of those sources.

Material supplied by the Company may vary significantly from this data, but will conform to all relevant and applicable standards.

As the products detailed may be used for a wide variety of purposes and as the Company has no control over their use; the Company specifically excludes all conditions or warranties expressed or implied by statute or otherwise as to dimensions, properties and/or fitness for any particular purpose, whether expressed or implied.

Advice given by the Company to any third party is given for that party’s assistance only and without liability on the part of the Company. All transactions are subject to the Company’s current Conditions of Sale. The extent of the Company’s liabilities to any customer is clearly set out in those Conditions; a copy of which is available on request.