Marc Hummel

Using Scrap in Recycling Alloys for Structural Applications in The Automotive Industry

After studying CO2 emissions caused by vehicles itself, automotive manufacturers now also consider CO2 emission during the production of vehicles and attempt to reduce them according to a holistic approach. This is where AUDI AG as first OEM together with AMAG Casting applies this approach at the production of structural components, which have been produced by primary alloys up to now. This component segment, which is significantly growing by now, requests mainly high ductility values, in order to absorb as much energy as possible in the case of a crash. In addition to the Fe-content, recycling alloys also have further tramp elements, which occur inevitably at scrap treatment. Besides Cu and Zn there are also elements like Bi, Cr, Ni, Sb, Sn etc. which have to be considered, since they influence the requested alloy properties in a negative way. The results of the existing work show that skilled scrap input at the alloy production can reduce this negative effect close to zero.