AUSTENITIC CAST IRON AND MANUFACTURING PROCESS FOR THE SAME, AUSTENITIC-CAST-IRON CAST PRODUCT AND COMPONENT PART FOR EXHAUST SYSTEM
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United States of America Patent
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Issued Date -
Nov 11, 2010
app pub date -
Aug 29, 2008
filing date -
Aug 31, 2007
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Abandoned
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Abstract
An austenitic cast iron according to the present invention has Ni: from 7 to 15% by mass, and is characterized in that it comprises a base structure in which an austenite phase makes a major phase even in ordinary-temperature region by adjusting the respective compositions of Cr, Ni and Cu, excepting C and Si, so as to fall within predetermined ranges. In accordance with the present invention, it is possible to obtain an austenitic cast iron, which is excellent in terms of oxidation resistance and the like, inexpensively, while reducing the content of expensive Ni.
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