JPS565949A - High tensile steel with superior sulfide corrosion crack resistance and superior corrosion resistance - Google Patents

High tensile steel with superior sulfide corrosion crack resistance and superior corrosion resistance

Info

Publication number
JPS565949A
JPS565949A JP8147279A JP8147279A JPS565949A JP S565949 A JPS565949 A JP S565949A JP 8147279 A JP8147279 A JP 8147279A JP 8147279 A JP8147279 A JP 8147279A JP S565949 A JPS565949 A JP S565949A
Authority
JP
Japan
Prior art keywords
superior
steel
resistance
high tensile
crack resistance
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
JP8147279A
Other languages
Japanese (ja)
Other versions
JPS609582B2 (en
Inventor
Katsutoshi Ina
Kazuo Yamamoto
Hirokichi Higashiyama
Norio Ishikawa
Hiroshi Miyoshi
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
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 JP54081472A priority Critical patent/JPS609582B2/en
Priority to EP80103423A priority patent/EP0021349B1/en
Priority to DE8080103423T priority patent/DE3070501D1/en
Priority to CA000354715A priority patent/CA1169682A/en
Publication of JPS565949A publication Critical patent/JPS565949A/en
Priority to US06/387,264 priority patent/US4407681A/en
Publication of JPS609582B2 publication Critical patent/JPS609582B2/en
Expired legal-status Critical Current

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Abstract

PURPOSE: To provide a high tensile steel with superior yield strength and superior sulfide corrosion crack resistance by subjecting steel contg. Mn and Co or further contg. special added elements to hardening and tempering.
CONSTITUTION: To steel contg. 0.05W0.50% C and 0.10W1.0% Si are added 0.1W2.0% Mn for enhancing the hardenability, strength and toughness of the steel and 0.05W1.50% Co as an element for enhancing the sulfide corrosion crack resistance and corrosion resistance of the steel. To the steel may further be added 0.10W 0.50% Cu, 0.20W2.0% Cr, 0.05W1.0% Mo, 0.05W1.0% W, 0.01W0.15% Nb, 0.01W0.15% V, 0.01W0.15% Ti and 0.0003W0.0050% B. The resulting high tensile steel is used to construct the weld zones of an oil well pipe, a line pipe or an LPG tank, and by subjecting the zones to perfect hardening and sufficient tempering, a tempered martensite structure is formed to impart ≥60kg/mm2 yield strength and superior sulfide corrosion crack resistance.
COPYRIGHT: (C)1981,JPO&Japio
JP54081472A 1979-06-29 1979-06-29 High tensile strength steel with excellent sulfide corrosion cracking resistance and corrosion resistance Expired JPS609582B2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP54081472A JPS609582B2 (en) 1979-06-29 1979-06-29 High tensile strength steel with excellent sulfide corrosion cracking resistance and corrosion resistance
EP80103423A EP0021349B1 (en) 1979-06-29 1980-06-19 High tensile steel and process for producing the same
DE8080103423T DE3070501D1 (en) 1979-06-29 1980-06-19 High tensile steel and process for producing the same
CA000354715A CA1169682A (en) 1979-06-29 1980-06-25 High tensile steel and process for producing the same
US06/387,264 US4407681A (en) 1979-06-29 1982-06-09 High tensile steel and process for producing the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54081472A JPS609582B2 (en) 1979-06-29 1979-06-29 High tensile strength steel with excellent sulfide corrosion cracking resistance and corrosion resistance

Publications (2)

Publication Number Publication Date
JPS565949A true JPS565949A (en) 1981-01-22
JPS609582B2 JPS609582B2 (en) 1985-03-11

Family

ID=13747335

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54081472A Expired JPS609582B2 (en) 1979-06-29 1979-06-29 High tensile strength steel with excellent sulfide corrosion cracking resistance and corrosion resistance

Country Status (1)

Country Link
JP (1) JPS609582B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100564324B1 (en) * 2001-12-21 2006-03-29 주식회사 포스코 Hot rolled low alloy steel with good carbon dioxide corrosion resistance
KR100564325B1 (en) * 2001-12-21 2006-03-29 주식회사 포스코 Hot rolled low alloy steel with good carbon dioxide corrosion resistance and hydrogen induced cracking resistance
EP3425078A4 (en) * 2016-03-04 2019-08-14 Nippon Steel Corporation 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

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51108619A (en) * 1975-03-20 1976-09-27 Nippon Steel Corp TAIKAISUISEIKOSENZAI

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51108619A (en) * 1975-03-20 1976-09-27 Nippon Steel Corp TAIKAISUISEIKOSENZAI

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100564324B1 (en) * 2001-12-21 2006-03-29 주식회사 포스코 Hot rolled low alloy steel with good carbon dioxide corrosion resistance
KR100564325B1 (en) * 2001-12-21 2006-03-29 주식회사 포스코 Hot rolled low alloy steel with good carbon dioxide corrosion resistance and hydrogen induced cracking resistance
EP3425078A4 (en) * 2016-03-04 2019-08-14 Nippon Steel Corporation Steel material and steel pipe for use in oil well
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
EP3508603A4 (en) * 2016-09-01 2020-06-03 Nippon Steel Corporation Steel and oil well steel pipe

Also Published As

Publication number Publication date
JPS609582B2 (en) 1985-03-11

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