JPS5735622A - Manufacture of high strength steel for oil well with superior delayed fracture resistance - Google Patents

Manufacture of high strength steel for oil well with superior delayed fracture resistance

Info

Publication number
JPS5735622A
JPS5735622A JP11014780A JP11014780A JPS5735622A JP S5735622 A JPS5735622 A JP S5735622A JP 11014780 A JP11014780 A JP 11014780A JP 11014780 A JP11014780 A JP 11014780A JP S5735622 A JPS5735622 A JP S5735622A
Authority
JP
Japan
Prior art keywords
high strength
fracture resistance
delayed fracture
strength steel
manufacture
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.)
Granted
Application number
JP11014780A
Other languages
Japanese (ja)
Other versions
JPS5949284B2 (en
Inventor
Shiro Mukai
Akio Ikeda
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.)
Nippon Steel Corp
Original Assignee
Sumitomo Metal Industries 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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP11014780A priority Critical patent/JPS5949284B2/en
Publication of JPS5735622A publication Critical patent/JPS5735622A/en
Publication of JPS5949284B2 publication Critical patent/JPS5949284B2/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/02—Hardening by precipitation

Abstract

PURPOSE:To obtain a high strength steel with superior delayed fracture resistance in hot alkali environment by subjecting a steel contg. a prescribed amount of C, Si, Mn, Cr, Ni and V to hardening and tempering at a prescribed temp. CONSTITUTION:A steel consisting of 0.27-0.50% C, 0.08-0.30% Si, 0.90-1.30% Mn, 0.5-0.9% Cr, 0.04-0.11% V, <=0.03% Ni, 0.01-0,10% Nb, 0.60-0.80% Mo, <=0.1% Al and the balance Fe with impurities including <=0.005% P and <=0.003% S is hardened at 880-980 deg.C, and the hardened steel is tempered at >=650 deg.C.
JP11014780A 1980-08-11 1980-08-11 Method for producing high-strength oil well steel with excellent delayed fracture resistance Expired JPS5949284B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11014780A JPS5949284B2 (en) 1980-08-11 1980-08-11 Method for producing high-strength oil well steel with excellent delayed fracture resistance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11014780A JPS5949284B2 (en) 1980-08-11 1980-08-11 Method for producing high-strength oil well steel with excellent delayed fracture resistance

Publications (2)

Publication Number Publication Date
JPS5735622A true JPS5735622A (en) 1982-02-26
JPS5949284B2 JPS5949284B2 (en) 1984-12-01

Family

ID=14528230

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11014780A Expired JPS5949284B2 (en) 1980-08-11 1980-08-11 Method for producing high-strength oil well steel with excellent delayed fracture resistance

Country Status (1)

Country Link
JP (1) JPS5949284B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6447835A (en) * 1987-08-19 1989-02-22 Daido Steel Co Ltd Production of steel for high strength parts and high strength parts
WO2017150252A1 (en) * 2016-03-04 2017-09-08 新日鐵住金株式会社 Steel material and steel pipe for use in oil well
WO2017150251A1 (en) * 2016-03-04 2017-09-08 新日鐵住金株式会社 Steel material and steel pipe for use in oil well
US10655200B2 (en) 2016-09-01 2020-05-19 Nippon Steel Corporation Steel material and oil-well steel pipe
CN111471926A (en) * 2020-04-09 2020-07-31 烟台大学 Pipe joint and preparation method thereof

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6447835A (en) * 1987-08-19 1989-02-22 Daido Steel Co Ltd Production of steel for high strength parts and high strength parts
WO2017150252A1 (en) * 2016-03-04 2017-09-08 新日鐵住金株式会社 Steel material and steel pipe for use in oil well
WO2017150251A1 (en) * 2016-03-04 2017-09-08 新日鐵住金株式会社 Steel material and steel pipe for use in oil well
CN108779529A (en) * 2016-03-04 2018-11-09 新日铁住金株式会社 Steel and Oil Well Pipe
RU2698006C1 (en) * 2016-03-04 2019-08-21 Ниппон Стил Корпорейшн Steel material and steel pipe for oil wells
US10443114B2 (en) 2016-03-04 2019-10-15 Nippon Steel Corporation Steel material and oil-well steel pipe
RU2698006C9 (en) * 2016-03-04 2019-12-25 Ниппон Стил Корпорейшн Steel material and steel pipe for oil wells
US10550962B2 (en) 2016-03-04 2020-02-04 Nippon Steel Corporation Steel material and oil-well steel pipe
US10655200B2 (en) 2016-09-01 2020-05-19 Nippon Steel Corporation Steel material and oil-well steel pipe
CN111471926A (en) * 2020-04-09 2020-07-31 烟台大学 Pipe joint and preparation method thereof

Also Published As

Publication number Publication date
JPS5949284B2 (en) 1984-12-01

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