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Data Sheets

Aluminium Alloy


L102 T4511 Bar

High strength structural components: aircraft (e.g. fittings and wheels), military vehicles and bridges, forgings for trucks and machinery (hydraulic etc.). weapons manufacture, structural applications.

Characteristic Properties:
Heat treatable alloy. High mechanical strength slightly higher than 2011 and 2017A.

Chemical Composition

BS L102(1971)
Alloy L102
Chemical Element % Present
Copper (Cu) 3.90 - 5.00
Chromium (Cr) 0.0 - 0.10
Iron (Fe) 0.0 - 0.50
Magnesium (Mg) 0.20 - 0.80
Manganese (Mn) 0.40 - 1.20
Nickel (Ni) 0.0 - 0.20
Lead (Pb) 0.0 - 0.05
Silicon (Si) 0.50 - 0.90
Tin (Sn) 0.0 - 0.05
Zinc (Zn) 0.0 - 0.20
Titanium + Zirconium (Ti+Zr) 0.0 - 0.20
Aluminium (Al) Balance

Alloy Designations

Aluminium alloy BS L102 - 2014A is covered by standard BS EN 2L102 (1971)

Generic Physical Properties

Physical Property Value
Density 2800 g/cm³
Melting Point 640 °C
Thermal Expansion 22.8 x10^-6 /K
Modulus of Elasticity 73000 GPa
Thermal Conductivity 134 W/m.K

Mechanical Properties

The following Mechanical Properties relate to T4511 temper material in various diameters:


Thickness (mm)Proof StrengthTensile StrengthElongation
Up to & incl. 10235 Min370 Min11% Min
Over 10 up to & incl. 20260 Min400 Min11% Min
Over 20 up to & incl. 75270 Min410 Min14% Min
Over 75 up to & incl. 150260 Min400 Min12% Min
Over 150 up to & incl. 200230 Min370 Min8% Min


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.