JPS57126958A - Low alloy steel for rotor - Google Patents

Low alloy steel for rotor

Info

Publication number
JPS57126958A
JPS57126958A JP1018781A JP1018781A JPS57126958A JP S57126958 A JPS57126958 A JP S57126958A JP 1018781 A JP1018781 A JP 1018781A JP 1018781 A JP1018781 A JP 1018781A JP S57126958 A JPS57126958 A JP S57126958A
Authority
JP
Japan
Prior art keywords
rotor
alloy steel
low alloy
steel
low
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP1018781A
Other languages
Japanese (ja)
Inventor
Mitsuo Kawai
Hirokazu Tokoro
Hiroaki Yoshioka
Original Assignee
Toshiba Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP1018781A priority Critical patent/JPS57126958A/en
Publication of JPS57126958A publication Critical patent/JPS57126958A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To provide the low alloy steel for a rotor provided with especially excellent temper brittleness resistance containing C, Mn, Si, Ni, Cr, Mo, V, Nb and Ca in a predetermined ratio respectively.
CONSTITUTION: The low alloy steel for a rotor comprises, on the wt. basis, 0.15W0.35% C, 0.2W0.5% Mn, 0.01W0.2% Si, 3.0W5.5% Ni, 0.5W2.0% Cr, 0.1W 1.0% Mo, 0.05W0.2% V, 0.01W0.1% Nb, 0.005W0.05% Ca and the remainder of Fe and inevitable impurities. That is, said low allow steel is the one comprising further containing Nb and Ca in a composition of 3.5 Ni-Cr-Mo-V steel which is a conventional rotor material in the aforementioned ratio respectively and a turbine rotor having high strength and high toughness as well as excellent in temper brittleness resistance is obtained. Therefore, even if the turbine rotor is made large, practical use is enabled sufficiently.
COPYRIGHT: (C)1982,JPO&Japio
JP1018781A 1981-01-28 1981-01-28 Low alloy steel for rotor Pending JPS57126958A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1018781A JPS57126958A (en) 1981-01-28 1981-01-28 Low alloy steel for rotor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1018781A JPS57126958A (en) 1981-01-28 1981-01-28 Low alloy steel for rotor

Publications (1)

Publication Number Publication Date
JPS57126958A true JPS57126958A (en) 1982-08-06

Family

ID=11743274

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1018781A Pending JPS57126958A (en) 1981-01-28 1981-01-28 Low alloy steel for rotor

Country Status (1)

Country Link
JP (1) JPS57126958A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988005086A1 (en) * 1987-01-09 1988-07-14 Hitachi, Ltd. Heat-resistant steel and gas turbine made of the same
US20100202891A1 (en) * 2008-08-11 2010-08-12 Shin Nishimoto Low-pressure turbine rotor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988005086A1 (en) * 1987-01-09 1988-07-14 Hitachi, Ltd. Heat-resistant steel and gas turbine made of the same
US20100202891A1 (en) * 2008-08-11 2010-08-12 Shin Nishimoto Low-pressure turbine rotor

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