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October 04, 2011

Mazda and Sumitomo use super strength for lighter and more efficient cars


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.




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