| 摘要 |
PROBLEM TO BE SOLVED: To provide a rolling part having the same properties as a rolling part using a bearing steel by optimizing inexpensive elements of C, Si and Mn without using an expensive element and a power transfer part using the rolling part. SOLUTION: The rolling part is obtained by forming and processing steel containing, by weight, 0.5-0.7% C, 0.6-1.2% Si and 0.6-1.0 Mn and satisfying formulae (1) an (2) related to the contents of C, Si, and Mn. L>=5000...(1), where L=11271(C%)+5796 (Si%)+2665 (Mn%)-6955. 23<=H<=25...(2), where H=48.0 (C%)+5.7 (Si%)+11.5(Mn%)-16.2.
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