Aluminium Alloy - BS-L - L59 H16 or H26 Sheet

L59 H16 or H26 Sheet

Equipment for heating and cooling: heat exchangers, air condition evaporators, motor vehicle radiators, aircraft and military components, freezer linings, office equipment. Tubing, piping. Cladding alloy. Pressure vessels.

Characteristic Properties:
Very good resistance to atmospheric corrosion. Very good weldability. Good formability by pressing, drawing and roll forming. Medium strength alloy. Better mechanical properties (in particular at elevated temperatures) than 1xxx-alloys. Properties very close to those of 3003.

Precautions and Warnings:
Actual performance requires careful design of tools, lubrication and metal surface condition.

Chemical Composition

Spec: BS 4L59(1985)

Alloy L59

Chemical Element % Present
Magnesium (Mg) 0.0 - 0.30
Copper (Cu) 0.0 - 0.10
Silicon (Si) 0.0 - 0.50
Other (Each) 0.0 - 0.05
Iron (Fe) 0.0 - 0.70
Titanium + Zirconium (Ti+Zr) 0.0 - 0.10
Chromium (Cr) 0.0 - 0.10
Manganese (Mn) 0.90 - 1.50
Others (Total) 0.0 - 0.15
Zinc (Zn) 0.0 - 0.20
Aluminium (Al) Balance


Physical PropertyValue
Density 2.61 g/cm³
Melting Point 655 °C
Thermal Expansion 23.1 x10^-6 /K
Modulus of Elasticity 69.5 GPa
Thermal Conductivity 160 W/m.K
Electrical Resistivity 42 % IACS

Spec: BS 4L59(1985)

Sheet - 0.4mm to 0.8mm

Mechanical PropertyValue
Elongation A50 mm 2 Min %
Tensile Strength 160 Min - 195 Max N/mm2

Alloy Designations

Aluminium alloy L59 - 3103 is covered by Standard BS EN 4L59 (1985) 

Temper Types

The most common tempers for L59 - 3103 aluminium are:

  • H16 - Work hardened by rolling to three-quarter hard, not annealed after rolling
  • H26 - Work hardened by rolling then annealed to three-quarter hard

Supplied Forms

L59 - 3103 aluminium is supplied in the following forms:

  • Sheet
  • Strip
Download PDF Version

Datasheet Search

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.