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Unformatted text preview: , especially coal. Typically,
rail cars are designed for a 30-year life, and materials
developments have tended to evolve gradually.3 However,
much of the existing rail stock is now approaching the
end of its original design life. This, together with the
recent high demand for the transport of low-sulfur coal
from the western mines to the eastern markets, has
caused a boom in the construction of coal cars. An article
in American Metal Market (AMM)4 forecast that deliveries
of railcars will approach some 60,000 units per year by
2009 and projected a 50% growth in coal car deliveries
over the ﬁve years starting in 2005. In a more recent
article, AMM5 estimated that some 27% of these cars
will be aluminum. The lighter aluminum railcar bodies,
about two-thirds the weight of the comparable steel body,
enable a greater payload. The higher payload capacity
repays the higher initial cost of aluminum in less than
two years, and the resistance of aluminum to corrosion
by the high-sulfur coal ensures long durability...
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This note was uploaded on 01/27/2014 for the course CM 312 taught by Professor Mariowriedt during the Spring '10 term at Clarkson University .
- Spring '10