Cranfield study recommends automotive firms switch from aluminium to zinc alloys

However, a new study carried out by researchers at Cranfield University suggests that the use of zinc alloys rather than aluminium could greatly enhance the longevity and sustainability of automotive components.

The study conducted by a team at the university’s Sustainable Manufacturing Systems Centre and published ‘International Journal of Sustainable Manufacturing’, compared three different alloys (Aluminium-A380, Magnesium-AZ91D and Zinc-ZA8).

Professor Konstantinos Salonitis

It suggests that aluminium is frequently chosen ahead of other alloys because of a failure to fully factor the sustainability of the end-product into consideration. When examining sustainability alongside traditional factors such as time, cost and flexibility, Cranfield’s research demonstrated that the zinc rather than the aluminium or magnesium alloys offered the better choice for automotive manufacturers.  

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The zinc alloy proved to be a more sustainable and higher performing option, when considering measures such as the environmental impact caused by the extraction of the metal and the quality of the parts it produces. Despite the aluminium alloy being a lower cost option, the study found that the zinc alloy also offered better value for money as the parts it creates are likely to have a much longer life than the other alloys.