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SAMPLING FOR THE SPECTROCHEMICAL ANALYSIS OF GRAY AND DUCTILE CAST IRON

19840547
Journal: Transactions of the American Foundrymen's Society V 91 Paper 83-185 P 799-806, 1983 (8 pages)
Author: H. Campbell & J.E. Gruzleski

The authors review the degree to which results of vacuum emission spectrometry are affected by the nature of the sample's microstructure. Various sample molds are reviewed and differences in spectrometry results relating to each type are presented. While certain types emerge as preferable, there appears to be no simple answer to this problem. Of interest is the ranking of sample molds from worst to best changes when magnesium is included in the elements considered. Generally speaking, samples produced in sample copper molds were consistently the worst.



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