Ferrite-based spheroidal graphite cast iron and exhaust system component using the same
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United States of America Patent
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Issued Date -
May 13, 2004
app pub date -
Nov 8, 2002
filing date -
May 16, 2001
priority date (Note) -
Abandoned
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Abstract
The present invention provides a ferrite-based spheroidal graphite cast iron containing the following elements in the following contents in % by weight: C: 3.1 to 4.0%; Si: 3.6 to 4.6%; Mo: 0.3 to 1.0%; V: 0.1 to 1.0%; Mn: 0.15 to 1.6%; and Mg: 0.02 to 0.10%, and the total content of V and Mn is 0.3 to 2.0 wt %, and an exhaust system component using the spheroidal graphite cast iron. Thus, the ferrite-based spheroidal graphite cast iron having higher heat resistance than that of a conventional high Si spheroidal graphite cast iron that can be produced inexpensively by a simple method.
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