In 1999, approximately 58 percent of the global production of fuel tanks was steel. Market analysts project steel's market share will dip to about 41 percent by 2004. However, with the expectation of stricter evaporative emissions and durability requirements, along with improved steels and forming processes, vehicle manufacturers are rethinking their choice of plastic fuel tanks. Automakers understand that CARB requirements influence automotive regulations not only in California, but in many other states, and other countries. Meeting stricter requirements for permeability may require plastic fuel tanks to become heavier and more costly, thereby mitigating the perceived weight and cost advantages plastic fuel tanks have enjoyed.
Steel successfully addresses the permeability and affordability issues.
Advances in materials, such as highly formable steels that allow for greater flexibility in the forming of complex shapes, and improved corrosion-resistance make steel attractive for fuel tanks. These materials, coupled with leading edge processes, including 3-dimensional welding and hydroforming, will enable the steel industry to continue to provide affordable, durable and environmentally sound products for its customers.