Carburized part, method for manufacturing thereof, and steel for carburized part

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United States of America Patent

PATENT NO 9771643
SERIAL NO

14245229

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Abstract

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The invention provides a carburized part which has excellent medium-cycle fatigue strength in particular subjected to surface-hardening treatment by carburization. The invention provides a carburized part including a carburized layer formed by performing carburizing treatment to a steel, the steel including, in terms of % by mass: 0.15% to 0.25% of C, 0.15% or less of Si, 0.4% to 1.1% of Mn, 0.8% to 1.4% of Cr, 0.25% to 0.55% of Mo, 0.015% or less of P, and 0.035% or less of S, with the remainder being Fe and unavoidable impurities, and the steel satisfying the following relation; 0.10≦[Mo]/(10[Si]+[Mn]+[Cr])≦0.40, in which [M] represents a content of element M in terms of % by mass.

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Patent Owner(s)

  • DAIDO STEEL CO., LTD.;HONDA MOTOR CO., LTD.

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kato, Shinichiro Aichi, JP 75 1420
Matsumura, Yasushi Aichi, JP 80 1346
Miyazaki, Takahiro Aichi, JP 71 946
Ninomiya, Akihito Saitama, JP 6 8
Okada, Yoshinari Saitama, JP 8 22
Shimomura, Tetsuya Aichi, JP 19 456
Yamaguchi, Katsuya Aichi, JP 19 137

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