Roughly shaped material for induction hardened components and method for producing same

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United States of America Patent

PATENT NO 10072314
APP PUB NO 20160010166A1
SERIAL NO

14770990

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Abstract

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A Roughly shaped material for induction hardened components including: a. steel as a base metal including, as a chemical composition, by mass %, C: 0.35% to 0.6%, Si: 0.02% to 2.0%, Mn: 0.35% to 1.5%, Al: 0.001% to 0.5%, Cr: 0.05% to 2.0%, S: 0.0001% to 0.05%, N: 0.003% to 0.0120%, P: 0.03% or less, O: 0.0050% or less, an iron nitride layer having a thickness of 0.1 μm to 50 μm in a depth direction is formed at a surface, and a volume fraction of a γ′ phase, which is a Fe nitride, in the iron nitride layer, is 80% or more.

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Patent Owner(s)

Patent OwnerAddress
NIPPON STEEL CORPORATIONCHIYODA-KU TOKYO 100-8071

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Koyama, Tatsuya Nishio, JP 127 859
Yoshida, Suguru Kisarazu, JP 71 484

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