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Unformatted text preview: for these
coal cars. In addition to the operational advantages, the
U.S. DOE has reported that the conversion of coal cars
to aluminum has facilitated a signiﬁcant decrease in
the total CO2 emissions produced by the transportation
8 Figure 1. Aluminum intensive open-top hopper cars. (Photos courtesy
of Freight Car of America) sector.6 To further emphasize this application, FreightCar
America, a builder of rail cars, recently celebrated the
delivery of the 100,000th aluminum car in a ceremony
with its customer in December, 2006.7 Figure 1 shows
a line of open-top, hopper cars for hauling coal made
using aluminum plate and extrusions.
The use of aluminum in coal freight cars is only one
of many freight applications. Aluminum cars are used
to transport a variety of metal ores and minerals from
mine to market. In all these applications the high speciﬁc
strength (strength to weight ratio) of aluminum enables
increased payload and fuel savings. Johnstown America’s
website8 offers an excellent overview of the large number
of designs availab...
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- Spring '10