JPS5466321A - Manufacture of unrefined high tensile steel for welded structure - Google Patents
Manufacture of unrefined high tensile steel for welded structureInfo
- Publication number
- JPS5466321A JPS5466321A JP13267177A JP13267177A JPS5466321A JP S5466321 A JPS5466321 A JP S5466321A JP 13267177 A JP13267177 A JP 13267177A JP 13267177 A JP13267177 A JP 13267177A JP S5466321 A JPS5466321 A JP S5466321A
- Authority
- JP
- Japan
- Prior art keywords
- steel
- unrefined
- high tensile
- hot rolled
- welded structure
- 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
Links
Abstract
PURPOSE: To enhance the strength, toughness and weldability of a low Nb-Mo-Ti type unrefined steel by hot rolling the steel under specific conditions to convert the structure into of fine ferrite.pearlite.
CONSTITUTION: Unrefined steel contg. C; 0.02W0.10%, Si; 0.02W0.35%, Mn; 1.0 W1.8%, Mo; 0.05W0.40%, Nb; 0.01W0.05%, Al; 0.005W0.08%, Ti; 0.005W 0.02%, N; 0.002W0.007%, and optionally Ni<1.5% and/or Cu<0.6% is hot rolled at a specific temp. and a specific reduction ratio according to the Mo and Nb contents to obtain an unrefined high tensile steel with superior strength, toughness and weldability for welded structure. It has more than 65% of ferrite.pealite structure as hot rolled. The above steel to be hot rolled may further contain one or more out of V; 0.02W0.10%, a rare earth element <0.07% and Ca<0.005%, and it satisfies a specific relation among the contents of C, Mn, Mo, Ni, Cu, and Nb.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13267177A JPS5466321A (en) | 1977-11-05 | 1977-11-05 | Manufacture of unrefined high tensile steel for welded structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13267177A JPS5466321A (en) | 1977-11-05 | 1977-11-05 | Manufacture of unrefined high tensile steel for welded structure |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5466321A true JPS5466321A (en) | 1979-05-28 |
Family
ID=15086767
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13267177A Pending JPS5466321A (en) | 1977-11-05 | 1977-11-05 | Manufacture of unrefined high tensile steel for welded structure |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5466321A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59159932A (en) * | 1983-03-02 | 1984-09-10 | Sumitomo Metal Ind Ltd | Production of high tensile steel plate having excellent strength and toughness |
US5858130A (en) * | 1997-06-25 | 1999-01-12 | Bethlehem Steel Corporation | Composition and method for producing an alloy steel and a product therefrom for structural applications |
JP2014062333A (en) * | 2006-10-06 | 2014-04-10 | Exxonmobil Upstram Research Company | Low yield ratio dual phase steel linepipe with superior strain aging resistance |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52128821A (en) * | 1976-04-12 | 1977-10-28 | Nippon Steel Corp | Preparation of high tensile steel having superior low temperature toughness and yield point above 40 kg/pp2 |
JPS52131918A (en) * | 1976-04-28 | 1977-11-05 | Nippon Kokan Kk <Nkk> | Production of non-refined high tensile thick steel plate with excellent toughness |
JPS5421917A (en) * | 1977-07-20 | 1979-02-19 | Nippon Kokan Kk <Nkk> | Method of manufacturing non-quenched high-tensile steel having high toughness |
-
1977
- 1977-11-05 JP JP13267177A patent/JPS5466321A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52128821A (en) * | 1976-04-12 | 1977-10-28 | Nippon Steel Corp | Preparation of high tensile steel having superior low temperature toughness and yield point above 40 kg/pp2 |
JPS52131918A (en) * | 1976-04-28 | 1977-11-05 | Nippon Kokan Kk <Nkk> | Production of non-refined high tensile thick steel plate with excellent toughness |
JPS5421917A (en) * | 1977-07-20 | 1979-02-19 | Nippon Kokan Kk <Nkk> | Method of manufacturing non-quenched high-tensile steel having high toughness |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59159932A (en) * | 1983-03-02 | 1984-09-10 | Sumitomo Metal Ind Ltd | Production of high tensile steel plate having excellent strength and toughness |
JPS6366368B2 (en) * | 1983-03-02 | 1988-12-20 | Sumitomo Metal Ind | |
US5858130A (en) * | 1997-06-25 | 1999-01-12 | Bethlehem Steel Corporation | Composition and method for producing an alloy steel and a product therefrom for structural applications |
JP2014062333A (en) * | 2006-10-06 | 2014-04-10 | Exxonmobil Upstram Research Company | Low yield ratio dual phase steel linepipe with superior strain aging resistance |
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