Typically rail cars are designed for a 30 year life

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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 .

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