STEEL FOR NITROCARBURIZING AND NITROCARBURIZED PARTS
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United States of America Patent
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Issued Date -
Aug 4, 2011
app pub date -
Oct 19, 2009
filing date -
May 15, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The present invention relates to a steel material giving more effective case hardening for improving the fatigue strength and is characterized by containing, by mass %, C: 0.01 to 0.3%, Si: less than 0.1%, Mn: 0.4 to 3%, Cr: 0.5 to 3%, and Al: 0.01 to 0.3%, further containing one or both of Mo: 0.2 to 1.5%, and V: 0.05 to 1.0%, having a balance of Fe and unavoidable impurities, and comprising a structure having 50% or more of bainite.
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