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.

SigmaChip A6 ™ Aluminium Alloy

Commercial Aluminium

SigmaChip A6 ™ Commercial Aluminium Alloy

Our SigmaChip A6™ aluminium alloy finds use applications that are impacted by new European environmental legislation regarding maximum allowable lead (Pb) content in finished components.


This legislation significantly affects automotive and electrical applications, and the chemical composition of SigmaChip A6 has evolved accordingly - this has also resulted in a change in the mechanical properties of SigmaChip A6™. SigmaChip A6™ finds many applications as a replacement for AW 6262 (which has an allowable lead (Pb) content that makes it incompatible with specific elements of the new European environmental legislation). It is also suitable for many applications as an alternative to AW 6061, AW 6082 and AW 6012.


SigmaChip A6™ is especially suited to turned parts manufacture where speed and aesthetic component finish have equal importance. The standard AW 6026 aluminium alloy has evolved to promote consistent machinability. We recommend SigmaChip A6™ for components where anodising or superior corrosion resistance is an additional requirement. Short, tightly curled chips and rapid metal removal rates ensure significantly reduced machining times over all-purpose grades such as 6082/H30, together with an excellent, bright surface finish. These attributes combine with improved anodising and corrosion resistance.

Typical Applications

Commercial applications for this engineering material include:

  • Turned parts
  • Automotive components
  • Repetitively produced components
  • Electrical applications

We stock SigmaChip A6 ™ in flats, round bar, square bar and hexagon bar.

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 SigmaChip A6 ™ 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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