AUSTENITIC STAINLESS STEEL AND PRODUCING METHOD THEREFOR, AND STRUCTURAL MATERIAL AND PIPING IN NUCLEAR REACTOR

Title:

AUSTENITIC STAINLESS STEEL AND PRODUCING METHOD THEREFOR, AND STRUCTURAL MATERIAL AND PIPING IN NUCLEAR REACTOR

Document Type and Number:

Japanese Patent JP2009079240

Kind Code:

A

Abstract:

To provide an austenitic stainless steel which is made hardly sensible and has excellent stress-corrosion cracking resistance, and even when the stress-corrosion crack is caused, hardly causes propagation of the stress-corrosion crack, since it has high stacking-fault energy value, and a producing method therefor, and the structural material thereof.

The austenitic stainless steel is composed of, by wt.%, 0.030% C, 0.030% N, 0.1% Si, 1.0% Mn, 10-26% Ni, 15-30% Cr, 3.0% Mo and the balance substantially Fe with inevitable impurities, wherein solid-solution content of C is 0.010% and solid-solution content of N is 0.010%. Further, the constitution containing 0.01-2.0% Al and the constitution containing 1.0% one or more kinds selected from V, Ti and Nb can be adopted.

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Inventors:

YONEZAWA TOSHIO
SUZUKI SHUNICHI
TEZUKA HIDESHI
TAKAMORI KENRO
OKI TAKASHI

Application Number:

JP2007247747A

Publication Date:

April 16, 2009

Filing Date:

September 25, 2007

Export Citation:

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Assignee:

UNIV TOHOKU
TOKYO ELECTRIC POWER CO

International Classes:

C22C38/00; C21D8/00; C22C38/44; C22C38/50; G21C5/00; G21D1/00

Domestic Patent References:

JPH07209485A	1995-08-11
JP2000319761A	2000-11-21
JPH02263928A	1990-10-26

Foreign References:

WO2005068674A1

2005-07-28

Attorney, Agent or Firm:

Masatake Shiga
Takashi Watanabe

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