Spring having excellent corrosion fatigue strength

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United States of America Patent

PATENT NO 9068615
APP PUB NO 20130285299A1
SERIAL NO

13978321

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Abstract

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A spring has a Rockwell hardness of HRC 53 to HRC 56 and a dislocation density ρ (cm−2) that satisfies the formula ρ≧1.4×1011×H−6.7×1012 in the Rockwell hardness range of HRC 53 to HRC 56, in which H is the Rockwell hardness. The spring also has a prior austenite grain size number of 10 or higher.

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Patent Owner(s)

Patent OwnerAddress
CHUO HATSUJO KABUSHIKI KAISHA68 AZA-KAMISHIOTA NARUMI-CHO MIDORI-KU NAGOYA-SHI AICHI 4588505

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kuno, Takanori Nagoya, JP 7 44
Wakita, Masami Nagoya, JP 17 124

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