About Smiths

We are a world-class supplier of engineering raw materials. Our objective is to provide all our customers, from the small machine shop to the large multi-national corporation, a supply path that continuously delivers the highest levels of service, quality and value.


Aerospace Aluminium Bar

L168 Aerospace Aluminium Bar

L168 is a high strength aerospace aluminium product containing 4% to 5 % copper. Produced in extruded bar and profile form, the alloy is supplied in the fully heat-treated condition (solution heat-treated and artificially aged). We stock L168 in the T6511 condition (stress relieved by controlled stretching), except for sizes under 10mm diameter and over 203.2mm diameter. (T6 only). Over 203.2mm diameter can be made to chemical composition only.


L168 aluminium is a high strength alloy which offers excellent machinability. The alloy has poor resistance to atmospheric corrosive attack. To protect the material against atmospheric corrosion in storage, the material can be lightly coated with a Lanolin based protective oil.

Typical Applications

Commercial applications for this engineering material include:

  • High Technology Applications
  • Aerospace Components

We stock L168 in flats, round bar, plate, round tube, square bar, hexagon bar and tee sections.

Technical Assistance

Our knowledgeable staff and resident metallurgists will be pleased to assist you further on any technical topic. Smiths Metal Centres Limited also boasts an in-house UKAS Accredited Testing Laboratory which is unique within the multi-metal and plastic stockholding sector. We believe this underlines our total commitment to quality and our ethos of being the complete service provider.

Additional Info

A technical datasheet for L168 is available in PDF file format. To view and download, please click here.

We offer in-house processing options - for more information, please refer to our processing services.

Read our corporate brochure by clicking here.

Interested in this product?
Why not get in touch?


Click Here