JPS56255A - Property-controlled steel excellent in welding crack sensitivity and having high tensile strength of 60kg/ 2 - Google Patents
Property-controlled steel excellent in welding crack sensitivity and having high tensile strength of 60kg/ 2Info
- Publication number
- JPS56255A JPS56255A JP7428979A JP7428979A JPS56255A JP S56255 A JPS56255 A JP S56255A JP 7428979 A JP7428979 A JP 7428979A JP 7428979 A JP7428979 A JP 7428979A JP S56255 A JPS56255 A JP S56255A
- Authority
- JP
- Japan
- Prior art keywords
- less
- steel
- content
- property
- tensile strength
- 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
Landscapes
- Arc Welding In General (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
PURPOSE: To prevent a welding crack from taking place in a steel even if it is not preheated before welding, by composing the steel of prescribed quantities of C, Si Mn, B, Al and N as indispensable constituents, a prescribed quantity of Mo, V or the like and the rest of Fe etc. and setting the Al content and N content of the steel under limited conditions at the quenching temperature of the steel.
CONSTITUTION: A steel, which comprises 0.02W0.09% of C, less than 0.55% of Si, 0.6W1.4% of Mn, 0.0005W0.002% of B, 0.04W0.1% of Al and 0.002W0.004% of N as indispensable constituents, at least one of less than 0.3% of Mo, less than 0.06% of V, less than 0.3% of Cu, less than 0.6% of Ni and less than 0.3% of Cr and the rest of Fe and unavoidable impurities and is 0.2% or less in Pcm=C+1/ 30Si+1/20(Mn+Cu+Cr)+1/60Ni+1/15Mo+1/10V+5B, is quenched and tempered. The Al content and N content of the steel at the quenching temperature (T°K) are limited as a formula shown.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7428979A JPS56255A (en) | 1979-06-12 | 1979-06-12 | Property-controlled steel excellent in welding crack sensitivity and having high tensile strength of 60kg/ 2 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7428979A JPS56255A (en) | 1979-06-12 | 1979-06-12 | Property-controlled steel excellent in welding crack sensitivity and having high tensile strength of 60kg/ 2 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56255A true JPS56255A (en) | 1981-01-06 |
Family
ID=13542814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7428979A Pending JPS56255A (en) | 1979-06-12 | 1979-06-12 | Property-controlled steel excellent in welding crack sensitivity and having high tensile strength of 60kg/ 2 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56255A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5241111A (en) * | 1975-09-29 | 1977-03-30 | Kawasaki Steel Corp | Refining type low alloy high tension steel having excellent toughness of welded part with large heat input |
-
1979
- 1979-06-12 JP JP7428979A patent/JPS56255A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5241111A (en) * | 1975-09-29 | 1977-03-30 | Kawasaki Steel Corp | Refining type low alloy high tension steel having excellent toughness of welded part with large heat input |
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