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 Tube

L56 Aerospace Aluminium Tube

L56 is an alloyed non-heat-treatable tube product where higher mechanical properties are required together with a degree of formability.

For Offshore Applications

We supply L56 alloy tubes hydraulically tested in the 'O' temper condition. The material is ideally suited for offshore applications and boasts superior corrosion resistance. Standard, industrial and marine atmospheres promote few problems. L56 aluminium alloy tubes are based on the 5251 aluminium material designation.


L56 aluminium tubes are easily welded and offer reasonable cold formability with good anodising properties. The alloy also offers very good corrosion resistance particularly in marine atmospheres.

Typical Applications

Commercial applications for this engineering material include:

  • Architectural panelling
  • Welded structures
  • Offshore applications
  • Pressure vessels
  • Appliances
  • Cabinets

We stock L56 in round tube.

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 L56 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.

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