Smiths Local Branch Finder

You are here: → HomeMaterialsAluminium Alloys Commercial Aluminium Alloys Smiths Designation Aluminium AlloysSigmaChip A6

SigmaChip A6 Commercial Aluminium AlloySigmaChip A6

Aluminium Alloy

Our SigmaChip A6 alloy has been updated to allow it to be used in applications that are impacted by new European environmental legislation regarding maximum allowable lead (Pb) content in finished components.

This legislation particularly effects automotive and electrical applications and the chemical composition of SigmaChip A6 has been changed 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 been optimised for consistent machinability. SigmaChip A6 is especially recommended for such components that have anodising or superior corrosion resistance is an additional requirement. Short, tightly curled chips and rapid metal removal rates ensure greatly reduced machining times over all-purpose grades such as 6082/H30, together with an excellent, bright surface finish.

These attributes are combined with very good anodising and corrosion resistance.

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.

Download SigmaChip A6 Datasheet


Excellent all round aesthetic performance is complimented with high mechanical properties, SigmaChip A6 has a proof stress of up to 380 N/mm² (depending on form and temper) and a tensile strength of up to 400 N/mm² (depending on form and temper).

We offer SigmaChip A6 commercial aluminium alloy from ex-stock in round bar.


Every Smiths Metal Centre has at least one automatic power bandsaw for immediate requirements with access within the Smiths group to thirty power saws including a fully automated magazine feed CNC rod blanking line. We can economically cut from one off blanks to the largest production run – for immediate or JIT deliveries.

Pick a Product

To find out more about Smiths Metal Centres own range of commercial aluminium alloys, click on one of our products on the side menu of this web page.

Have a question or need a detailed quote?

Our staff are ready to take your call. For all supply and technical enquiries call us today
on 0845 527 3331 or click here to contact us.