ArcelorMittal SA unveiled car door solutions June 25 that are
27 percent lighter and significantly cheaper to make without
compromising safety and structural requirements.
The weight reductions
were achieved using advanced high-strength steel and
ultra-high-strength steel and existing processing
steelmakers research and development team has also
identified additional solutions that will reduce weight by up
to 34 percent compared with existing parts in order to meet
tailpipe emission regulations taking effect in Europe in 2015
and U.S. tailpipe emissions and fuel economy rules taking
effect in 2021.
"With even tougher
standards being considered through 2025 in both regions, every
part of the vehicle is being studied to determine where weight
can be reduced," Brian Aranha, vice president of global
automotive at Luxembourg-based ArcelorMittal, said. "We are
working with all the major (original equipment manufacturers)
to integrate these new solutions into the design of future
A 34-percent reduction
in steel weight will provide a total door weight of about 26.4
pounds. Reducing vehicle weight by roughly 26 pounds allows a
1-gram reduction in carbon dioxide-equivalent emissions
"By applying present
solutions, a car door can be 30 percent less expensive than an
aluminum door," global research and development vice president
Greg Ludkovsky added.
ArcelorMittal is also developing new steel grades that will
be ready for production vehicles by 2017.