JPS63440A - Tempered-type high-tensile steel having superior toughness at low temperature in weld zone - Google Patents

Tempered-type high-tensile steel having superior toughness at low temperature in weld zone

Info

Publication number
JPS63440A
JPS63440A JP14146586A JP14146586A JPS63440A JP S63440 A JPS63440 A JP S63440A JP 14146586 A JP14146586 A JP 14146586A JP 14146586 A JP14146586 A JP 14146586A JP S63440 A JPS63440 A JP S63440A
Authority
JP
Japan
Prior art keywords
tempered
type high
weld zone
tensile steel
superior 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
JP14146586A
Inventor
Hidetaka Chiba
Hiroshi Gokyu
Ryota Yamaba
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 JP14146586A priority Critical patent/JPS63440A/en
Publication of JPS63440A publication Critical patent/JPS63440A/en
Application status is Pending legal-status Critical

Links

Abstract

PURPOSE: To increase the strength of a base material and also to obtain superior toughness at low temp. in a weld zone, by reducing the amount of N in particular and by specifying B content in a tempered-type high-tensile steel having a specific composition.
CONSTITUTION: A steel for welding construction, etc., has a composition consisting of, by weight, 0.02W0.20% C, >0.15W0.50% Si, 0.50W2.00% Mn, 0.05W2.0% Cr, 0.05W5.0% Ni, 0.05W1.00% Mo, 0.005W0.10% V, 0.0005W0.0025% B, 0.05W1.00% Cu, 0.02W0.10% solAl, 0.0002W0.0030% O, 0.0005W0.0035% N, and the balance Fe with inevitable impurities. Further, one or more kinds among 0.005W0.02% Ti, 0.005W0.10% Nb, and 0.0005W0.005% Ca are incorporated, if necessary. Owing to the above composition, the tempered-type high-tensile steel having superior toughness at low temp. in a weld zone can be provided, obviating the necessity of the addition of large amounts of expensive alloying elements.
COPYRIGHT: (C)1988,JPO&Japio
JP14146586A 1986-06-19 1986-06-19 Tempered-type high-tensile steel having superior toughness at low temperature in weld zone Pending JPS63440A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14146586A JPS63440A (en) 1986-06-19 1986-06-19 Tempered-type high-tensile steel having superior toughness at low temperature in weld zone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14146586A JPS63440A (en) 1986-06-19 1986-06-19 Tempered-type high-tensile steel having superior toughness at low temperature in weld zone

Publications (1)

Publication Number Publication Date
JPS63440A true JPS63440A (en) 1988-01-05

Family

ID=15292514

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14146586A Pending JPS63440A (en) 1986-06-19 1986-06-19 Tempered-type high-tensile steel having superior toughness at low temperature in weld zone

Country Status (1)

Country Link
JP (1) JPS63440A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0861915A1 (en) * 1997-02-25 1998-09-02 Sumitomo Metal Industries, Ltd. High-toughness, high-tensile-strength steel and method of manufacturing the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0861915A1 (en) * 1997-02-25 1998-09-02 Sumitomo Metal Industries, Ltd. High-toughness, high-tensile-strength steel and method of manufacturing the same

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