HEAT RESISTANT STEEL WITH HIGH TOUGHNESS, TURBINE ROTOR, AND THEIR PRODUCTION

Title:

HEAT RESISTANT STEEL WITH HIGH TOUGHNESS, TURBINE ROTOR, AND THEIR PRODUCTION

Document Type and Number:

Japanese Patent JPH10265909

Kind Code:

A

Abstract:

To provide a high toughness heat resistant steel excellent in creep rupture strength in a high temp. region as well as in tensile strength and toughness in a relatively low temp. region

This heat resistant steel with high toughness has a chemical composition consisting of, by weight ratio, 0.05-0.30% C, >0-0.20% Si, >0-1.0% Mn, 8.0-14.0% Cr, 0.5-3.0% Mo, 0.10-0.50% V, 1.5-5.0% Ni, 0.01-0.50% Nb, 0.01-0.08% N, 0.001-0.020% B, and the balance Fe with inevitable impurities.

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Inventors:

TSUDA YOICHI
ISHII RYUICHI
YAMADA MASAYUKI

Application Number:

JP7225897A

Publication Date:

October 06, 1998

Filing Date:

March 25, 1997

Export Citation:

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Assignee:

TOSHIBA CORP

International Classes:

C21D6/00; C21D9/28; C21D9/38; C22B9/18; C22C38/00; C22C38/44; C22C38/46; C22C38/48; C22C38/54; F01D5/28; (IPC1-7): C22C38/00; C21D6/00; C21D9/28; C22B9/18; C22C38/54; F01D5/28

Attorney, Agent or Firm:

Hisano Hatano (1 person outside)

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