JPS556458A - Low alloy heat-resisting steel of improved creep brittleness resistance characteristic - Google Patents
Low alloy heat-resisting steel of improved creep brittleness resistance characteristicInfo
- Publication number
- JPS556458A JPS556458A JP7806178A JP7806178A JPS556458A JP S556458 A JPS556458 A JP S556458A JP 7806178 A JP7806178 A JP 7806178A JP 7806178 A JP7806178 A JP 7806178A JP S556458 A JPS556458 A JP S556458A
- Authority
- JP
- Japan
- Prior art keywords
- resisting steel
- low alloy
- alloy heat
- steel
- heat
- 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
- Heat Treatment Of Articles (AREA)
Abstract
PURPOSE: The low alloy heat resisting steel of improved creep brittleness characteristics comprising adding one or two kinds of Ti, Nb to Cr-Mo-base low alloy heat- resisting steel so as to satisfy the specific relations with the specific creep brittleness coefficients or adding a suitable amount of B to the abovementioned alloy.
CONSTITUTION: The captioned heat-resisting steel is the superior steel for high temperature which contains one or two kinds of Ti, Nb in ordinary Cr-Mo-base low alloy heat-resisting steel (separately mentioned specific composition) so as to satisfy (Ti+Nb)%/CEF≥0.08 (where 0.02 to 0.2% in one or two kinds of Ti, Nb, CEF≥ 1) in the relations with creep brittleness coefficient CEF {=5(Sb%)1/2+ 2(As%+ Sn%)1/2+(Cu%+P%)1/2} or further contains B; 0.0005 to 0.006% in this and is composed of the rest of Fe, etc. and which is less in creep breaking ductility deterioration of the weld heat affected zone which will become an important problem for the breakage of high temperature structures as compared to ordinary Cr-Mo steel.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7806178A JPS556458A (en) | 1978-06-29 | 1978-06-29 | Low alloy heat-resisting steel of improved creep brittleness resistance characteristic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7806178A JPS556458A (en) | 1978-06-29 | 1978-06-29 | Low alloy heat-resisting steel of improved creep brittleness resistance characteristic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS556458A true JPS556458A (en) | 1980-01-17 |
Family
ID=13651331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7806178A Pending JPS556458A (en) | 1978-06-29 | 1978-06-29 | Low alloy heat-resisting steel of improved creep brittleness resistance characteristic |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS556458A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102758141A (en) * | 2011-04-25 | 2012-10-31 | 中国科学院金属研究所 | Novel nitride-reinforced martensite heat-resisting steel |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52108317A (en) * | 1976-03-08 | 1977-09-10 | Westinghouse Electric Corp | Heat resistance low carbon alloy steel |
-
1978
- 1978-06-29 JP JP7806178A patent/JPS556458A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52108317A (en) * | 1976-03-08 | 1977-09-10 | Westinghouse Electric Corp | Heat resistance low carbon alloy steel |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102758141A (en) * | 2011-04-25 | 2012-10-31 | 中国科学院金属研究所 | Novel nitride-reinforced martensite heat-resisting steel |
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