+44 (0)1487 833 600
Wilsons is COVID-19 Compliant

Data Sheets

Aluminium Alloy


L168 T6511 Bar

Aluminium alloy L168 - 2014A is a very high mechanical strength alloy used for critical applications and is the most widely used aluminium bar alloy in the aerospace industry.
It has very good machinability and is thus used for the production of complex machined parts.

Chemical Composition

BS L168(1978)
Alloy L168
Chemical Element % Present
Silicon (Si) 0.50 - 0.90
Iron (Fe) 0.0 - 0.50
Copper (Cu) 3.90 - 5.00
Manganese (Mn) 0.40 - 1.20
Chromium (Cr) 0.0 - 0.10
Magnesium (Mg) 0.20 - 0.80
Zinc (Zn) 0.0 - 0.25
Nickel (Ni) 0.0 - 0.10
Titanium (Ti) 0.0 - 0.15
Titanium + Zirconium (Ti+Zr) 0.0 - 0.20
Others (Total) 0.0 - 0.15
Other (Each) 0.0 - 0.05
Aluminium (Al) Balance

Alloy Designations

Aluminium alloy BS L168 - 2014A has similarities to the following standard designations and specifications but may not be a direct equivalent:

2014, AMS4121

Generic Physical Properties

Physical Property Value
Density 2.80 g/cm³
Melting Point 640 °C
Thermal Expansion 22.8 x10^-6 /K
Modulus of Elasticity 73 GPa
Thermal Conductivity 155 W/m.K
Electrical Resistivity 40 % IACS

Mechanical Properties

These Mechanical Properties are for bar in the T6511 temper

DiameterProof Strength (Min)Tensile Strenth (Min)Elongation % (Min)
Up to & incl 2.53704156
Over 2.5 up to and incl. 103854356
Over 10 up to and incl. 254154607
Over 25 up to and incl. 754404907
Over 75 up to and incl. 1004354807
Over 100 up to and incl. 1504204657
Over 150 up to and incl. 2003904357


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.