JPS5763663A - Steel products with superior rewistance to sr embrittlement - Google Patents

Steel products with superior rewistance to sr embrittlement

Info

Publication number
JPS5763663A
JPS5763663A JP12683481A JP12683481A JPS5763663A JP S5763663 A JPS5763663 A JP S5763663A JP 12683481 A JP12683481 A JP 12683481A JP 12683481 A JP12683481 A JP 12683481A JP S5763663 A JPS5763663 A JP S5763663A
Authority
JP
Japan
Prior art keywords
steel products
embrittlement
rewistance
superior
ferrite
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
JP12683481A
Other languages
Japanese (ja)
Inventor
Junichi Tanaka
Masakazu Niikura
Toshio Takano
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan Ltd
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 NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP12683481A priority Critical patent/JPS5763663A/en
Publication of JPS5763663A publication Critical patent/JPS5763663A/en
Pending legal-status Critical Current

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  • Heat Treatment Of Steel (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

PURPOSE: To obtain platelike steel products with enhanced resistance to SR embrittlement by reducing the C content, specifying the Si, Mn, Ni and Mo contents, and further adding Cu and/or Cr so as to specify the vol. percentage of ferrite.
CONSTITUTION: A steel consisting of ≤0.08% C, ≤0.05% Si, ≤2% Mn, 3W4% Ni, ≤2% Mo, 0.2W2% Cu and/or 0.2W3% Cr, and the balance Fe with impurities is hot-rolled to platelike steel products each having ≥30mm thickness and contg. ≥30vol% ferrite and <10% pearlite. By this composition high resistance to embrittlement due to stress relief annealing (SR) is provided, and the mechanical characteristics such as strength and notch toughness can be maintained properly after SR. The steel products are applied to a pressure vessel, etc.
COPYRIGHT: (C)1982,JPO&Japio
JP12683481A 1981-08-14 1981-08-14 Steel products with superior rewistance to sr embrittlement Pending JPS5763663A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12683481A JPS5763663A (en) 1981-08-14 1981-08-14 Steel products with superior rewistance to sr embrittlement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12683481A JPS5763663A (en) 1981-08-14 1981-08-14 Steel products with superior rewistance to sr embrittlement

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP52025900A Division JPS6035423B2 (en) 1977-03-11 1977-03-11 Steel material with excellent SR embrittlement resistance

Publications (1)

Publication Number Publication Date
JPS5763663A true JPS5763663A (en) 1982-04-17

Family

ID=14945055

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12683481A Pending JPS5763663A (en) 1981-08-14 1981-08-14 Steel products with superior rewistance to sr embrittlement

Country Status (1)

Country Link
JP (1) JPS5763663A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5395120A (en) * 1977-01-31 1978-08-19 Sumitomo Metal Ind Ltd Tough steel having excellent resistance for becoming brittle owing to sr

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5395120A (en) * 1977-01-31 1978-08-19 Sumitomo Metal Ind Ltd Tough steel having excellent resistance for becoming brittle owing to sr

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