The International Molybdenum Association (IMOA) has published a study showing that lightweight components manufactured from advanced high-strength steel (AHSS) can reduce attributable greenhouse gas emissions by around 29% compared with traditional component designs.

The study, conducted by sustainability consultant PE International, measured the lifetime environmental impact of replacing the B-Pillar in the latest Ford Fusion model with a new AHSS design. The B-Pillar is one of the most critical components in a vehicle body, protecting occupants by helping to maintain structural integrity in a side impact.

Traditionally made from press-hardened boron steel, it has been replaced in the new model with a hydro-formed component made from a mix of DP800 and DP1000 steels. The molybdenum in the steel supports modern forming processes while imparting exceptional strength, reducing the amount of steel required and making the new B-Pillar just as strong but 4 kg lighter.

The environmental benefit was calculated using life cycle assessment (LCA) to measure the total lifetime environmental impact from manufacture and use through to end-of-life. A number of environmental metrics relevant to vehicle performance were used, covering climate change, air pollution and energy resource use.

• [Editor:Mango]