Heat-resistant austenitic stainless steel highly inhibited from exfoliating scale, and stainless steel tube

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United States of America Patent

PATENT NO 9617627
APP PUB NO 20140356641A1
SERIAL NO

14365879

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Abstract

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This heat-resistant austenitic stainless steel has a specific composition containing Ce and Zr and has an Hv1/Hv0 ratio of 1.20 or higher, where Hv1 is the average hardness of the area ranging from the surface to a thickness-direction depth of 50 μm and Hv0 is the average hardness of the thickness-direction central part.

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Patent Owner(s)

  • KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.);KOBE STEEL, LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Miyamura, Takeo Kobe, JP 13 17
Namba, Shigenobu Kobe, JP 12 22

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