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Material Cost Savings in Powder Metal Transfer Case Sprockets and Sun Gears
ISSN: 1946-3979, e-ISSN: 1946-3987
Published April 14, 2008 by SAE International in United States
Citation: Legault, M., Hanejko, F., and Pendrak, D., "Material Cost Savings in Powder Metal Transfer Case Sprockets and Sun Gears," SAE Int. J. Mater. Manf. 1(1):385-389, 2009, https://doi.org/10.4271/2008-01-0850.
For years powder metal (P/M) nickel steel sprockets have been in use in the SUV Transfer Case market. The heat-treated, nickel steel powder metal provides a high strength and high wear resistant material for this very demanding application. Recently the cost of nickel has increased from $5 / lb Oct'05 to $24 / lb May'07. Because of this almost 5 fold increase in the commodity price a replacement material for the powder metal nickel steel was sought that would have comparable properties, comparable processing steps at a raw material cost that would be equal to the nickel steel powder metal prices of 2005. A replacement material was found that has comparable properties at a competitive price. Material composition, testing data and microscopic analysis will be presented.
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