Greencarcongress – Mazda Motor Corporation, in collaboration with Sumitomo Metal Industries, Ltd. and Aisin Takaoka Co., Ltd., has become the first automaker to successfully develop vehicle components using 1,800 MPa ultra-high tensile steel. The super-strength steel will debut in the new Mazda CX-5 crossover SUV that will commence its global launch in early 2012.
Mazda’s new production technology uses 1,800 MPa ultra-high tensile steel to fabricate bumper beams, which fit inside the front and rear bumpers and mitigate damage in the event of a collision. The bumper bars are 20% stronger and 4.8 kilograms lighter than previous versions and are a key part of Mazda’s next-generation, lightweight and highly rigid vehicle architecture.
Mazda CX-5 SKYACTIV body.
Stronger steel and aluminum alloys and redesigning car parts to reduce weight is likely to have the most impact in reducing vehicle weight. 10% reduction in vehicle weight provides a 6-7% boost in fuel efficiency.