Aluminium Alloy - BS-L - 5L34 'F' / 'O'

5L34 'F' / 'O'

Metal work, license plates, identification plates. Kitchenware, packaging foils, containers, automotive trim, heat exchanger strip, radiator tubes. Aircraft and military highly stressed structures.

Characteristic Properties:
Very good atmospheric corrosion resistance and workability. High thermal conductivity and reflectivity but lower than for 1050A. Very good weldability. Slightly higher strength than 1050A.

Chemical Composition

Spec: BS 5L34(1985)

Alloy L34

Chemical Element % Present
Titanium (Ti) 0.0 - 0.05
Manganese (Mn) 0.0 - 0.05
Silicon + Iron (Si+Fe) 0.0 - 1.00
Copper (Cu) 0.0 - 0.05
Others (Total) 0.0 - 0.15
Zinc (Zn) 0.0 - 0.10
Other (Each) 0.0 - 0.05
Aluminium (Al) Balance


Physical PropertyValue
Density 2.59 g/cm³
Melting Point 657 °C
Thermal Expansion 23.4 x10^-6 /K
Modulus of Elasticity 69 GPa
Thermal Conductivity 225 W/m.K
Electrical Resistivity 58.5 % IACS

Spec: BS 5L34(1985)


Mechanical PropertyValue
Elongation A50 mm 18 Min %
Tensile Strength 65 Min MPa

Alloy Designations

Aluminium alloy 5L34 - 1200 is covered by Standard BS EN 5L34 (1985) - Now Obsolete.

Temper Types

The most common tempers for 5L34 - 1200 aluminium are as forged 'F' or fully annealed 'O'

  • F - As fabricated
  • O - Soft

Supplied Forms

5L34-1200 aluminium is supplied as forging stock and forgings made from cast billet, extruded stock or rolled plate

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

7 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.