JPS57131349A - Low alloy cr-mo steel for pressure vessel - Google Patents

Low alloy cr-mo steel for pressure vessel

Info

Publication number
JPS57131349A
JPS57131349A JP1534281A JP1534281A JPS57131349A JP S57131349 A JPS57131349 A JP S57131349A JP 1534281 A JP1534281 A JP 1534281A JP 1534281 A JP1534281 A JP 1534281A JP S57131349 A JPS57131349 A JP S57131349A
Authority
JP
Japan
Prior art keywords
steel
pressure vessel
low alloy
temp
toughness
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
JP1534281A
Other languages
Japanese (ja)
Other versions
JPS6020460B2 (en
Inventor
Takashi Zaizen
Yasuo Otoguro
Katsukuni Hashimoto
Wataru Kabasawa
Kentaro Okamoto
Original Assignee
Nippon Steel 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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP1534281A priority Critical patent/JPS6020460B2/ja
Publication of JPS57131349A publication Critical patent/JPS57131349A/en
Publication of JPS6020460B2 publication Critical patent/JPS6020460B2/ja
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To enhance the strength of a low alloy Cr-Mo steel for a pressure vessel and the toughness as the vessel at high temp. by adding specified elements to the steel.
CONSTITUTION: A low alloy Cr-Mo steel having a composition prepared by adding 0.005W0.20% Ti, 0.0005W0.02% B and 0.002W0.2% of 1 or ≥2 kinds of rare earth elements of atomic no. 57W71 to a basic composition consisting of <0.30% C, <0.60% Si, 0.20W1.50% Mn, 1.00W3.50% Cr, 0.40W1.50% Mo, <0.30% Cu, 0.10W0.60% Ni and the balance Fe is used as a material for a reactor for petroleum refining, various pressure vessels for chemical industry, etc. To the basic composition may be added 0.01W0.5% at least one of Nb, Ta and V and/or 0.0005W0.02% Ca. This steel has superior strength, and the toughness of a pressure vessel of this steel does not deteriorate even if used as a high temp. pressure vessel in the embrittlement temp. zone for a long time.
COPYRIGHT: (C)1982,JPO&Japio
JP1534281A 1981-02-04 1981-02-04 Expired JPS6020460B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1534281A JPS6020460B2 (en) 1981-02-04 1981-02-04

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1534281A JPS6020460B2 (en) 1981-02-04 1981-02-04

Publications (2)

Publication Number Publication Date
JPS57131349A true JPS57131349A (en) 1982-08-14
JPS6020460B2 JPS6020460B2 (en) 1985-05-22

Family

ID=11886111

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1534281A Expired JPS6020460B2 (en) 1981-02-04 1981-02-04

Country Status (1)

Country Link
JP (1) JPS6020460B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6017056A (en) * 1983-07-06 1985-01-28 Nippon Kokan Kk <Nkk> Cr-mo steel with superior toughness
US5211909A (en) * 1991-02-22 1993-05-18 Sumitomo Metal Industries, Ltd. Low-alloy heat-resistant steel having improved creep strength and toughness
EP0560375A2 (en) * 1992-03-12 1993-09-15 Sumitomo Chemical Company, Limited Low-chromium ferritic heat-resistant steel with improved toughness and creep strength
US5746843A (en) * 1996-02-10 1998-05-05 Sumitomo Metal Industries, Ltd. Low Mn-low Cr ferritic heat resistant steel excellent in strength at elevated temperatures
US6406564B1 (en) 1998-12-14 2002-06-18 Nippon Steel Corporation Electric welded boiler steel pipe

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6017056A (en) * 1983-07-06 1985-01-28 Nippon Kokan Kk <Nkk> Cr-mo steel with superior toughness
US5211909A (en) * 1991-02-22 1993-05-18 Sumitomo Metal Industries, Ltd. Low-alloy heat-resistant steel having improved creep strength and toughness
EP0560375A2 (en) * 1992-03-12 1993-09-15 Sumitomo Chemical Company, Limited Low-chromium ferritic heat-resistant steel with improved toughness and creep strength
US5407635A (en) * 1992-03-12 1995-04-18 Sumitomo Metal Industries, Ltd. Low-chromium ferritic heat-resistant steel with improved toughness and creep strength
US5746843A (en) * 1996-02-10 1998-05-05 Sumitomo Metal Industries, Ltd. Low Mn-low Cr ferritic heat resistant steel excellent in strength at elevated temperatures
US6406564B1 (en) 1998-12-14 2002-06-18 Nippon Steel Corporation Electric welded boiler steel pipe
DE19982874B4 (en) * 1998-12-14 2005-11-03 Nippon Steel Corp. Electrically welded boiler structural steel tube

Also Published As

Publication number Publication date
JPS6020460B2 (en) 1985-05-22

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