Description
A report from the Steel Recycling Institute (Sebastian and Thimons 2017) indicates that every kilogram of steel in a car glider can be subsituted by 0.75 kilogram of AHSS or 0.68 kilogram of aluminium. Looking at the material composition of different car models three years apart, (Hottle et al. 2017) show that steel is in fact increasingly replaced by a combination of both aluminium and AHSS. However, they also show that the use of AHSS is generally preferred to aluminium as it allows greater mass reduction at a lower cost. Hence, we will consider that, for a given mass reduction to achieve, two-third comes from using AHSS, and one third comes from using aluminium. This means that one kilogram of mass reduction is achieved by replacing 3.57 kilogram of steel by: 1.76 kilogram of AHSS and 0.8 kilogram of aluminium.
Source
Technical or institutional report
Sacchi, R. and Bauer, C. 2023. Life-cycle inventories for on-road vehicles. Paul Scherrer Institut.