JPS648255A - Steel for pressure vessel - Google Patents
Steel for pressure vesselInfo
- Publication number
- JPS648255A JPS648255A JP15976187A JP15976187A JPS648255A JP S648255 A JPS648255 A JP S648255A JP 15976187 A JP15976187 A JP 15976187A JP 15976187 A JP15976187 A JP 15976187A JP S648255 A JPS648255 A JP S648255A
- Authority
- JP
- Japan
- Prior art keywords
- steel
- pressure vessel
- toughness
- deterioration
- compsn
- 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
- Pressure Vessels And Lids Thereof (AREA)
Abstract
PURPOSE:To prevent the deterioration of the internal material characteristics of a very thick product such as the strength and toughness by adding a very small amt. of Nb to a steel for a pressure vessel having a specified compsn. CONSTITUTION:The compsn. of a steel for a pressure vessel is composed of, by weight, <=0.25% C, <=0.35% Si, 1.3-1.5% Mn, 0.7-1% Ni, <=0.25% Cr, 0.45-0.6% Mo, <=0.01% V, 0.01-0.04% Nb, 0.012-0.025% Al, 70-120ppm N and the balance Fe with inevitable impurities. Since the very small amt. of Nb produces carbide grain refining and stabilizing effects and is effective in preventing the coarsening of the matrix grains, the deterioration of the toughness of the steel is inhibited. The steel is especially useful for a very thick pressure vessel.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15976187A JPS648255A (en) | 1987-06-29 | 1987-06-29 | Steel for pressure vessel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15976187A JPS648255A (en) | 1987-06-29 | 1987-06-29 | Steel for pressure vessel |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS648255A true JPS648255A (en) | 1989-01-12 |
Family
ID=15700688
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15976187A Pending JPS648255A (en) | 1987-06-29 | 1987-06-29 | Steel for pressure vessel |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS648255A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9297056B2 (en) | 2011-02-24 | 2016-03-29 | Kobe Steel, Ltd. | Forged steel and welded structure for components for nuclear power plants |
-
1987
- 1987-06-29 JP JP15976187A patent/JPS648255A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9297056B2 (en) | 2011-02-24 | 2016-03-29 | Kobe Steel, Ltd. | Forged steel and welded structure for components for nuclear power plants |
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