JPS5541962A - Cr-mo steel for pressure vessel - Google Patents
Cr-mo steel for pressure vesselInfo
- Publication number
- JPS5541962A JPS5541962A JP11506678A JP11506678A JPS5541962A JP S5541962 A JPS5541962 A JP S5541962A JP 11506678 A JP11506678 A JP 11506678A JP 11506678 A JP11506678 A JP 11506678A JP S5541962 A JPS5541962 A JP S5541962A
- Authority
- JP
- Japan
- Prior art keywords
- steel
- temp
- embrittle
- decreasing
- limitted
- 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.)
- Granted
Links
Abstract
PURPOSE: To provide a Cr-Mo steel for press. vessel improved in troughness after use in embrittle temp. range without causing decrease in high-temp. strength, by decreasing S and Mn contents of the Cr-Mo steel of specific composition, and particularly by adding a limitted amount of B.
CONSTITUTION: A Cr-Mo base steel comprising by weight, 0.08W0.20% C, ≤0.50% Si, 1.00W3.50% Cr, 0.40W1.50% Mo, ≤0.45% Mn, one or more members selected from the group consisting of 0.0005W0.005% B, 0.020W0.70% acid- soluble Al, 0.005W0.05% Ti, the balance being <0.010% S, and Fe contg. inevitable impurities. The steel is improved in toughness before embrittle treatment by decreasing S, and is restrained in embrittlement susceptibility by decreasing Mn. The decrease in high-temp. strength due to the shortage of hardening is counterbalanced by the addn. of a limitted amount of B, thereby producing a steel having excellent toughness after use in embrittle temp. range for a long time.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53115066A JPS592736B2 (en) | 1978-09-21 | 1978-09-21 | Cr↓-Mo steel for pressure vessels |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53115066A JPS592736B2 (en) | 1978-09-21 | 1978-09-21 | Cr↓-Mo steel for pressure vessels |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5541962A true JPS5541962A (en) | 1980-03-25 |
JPS592736B2 JPS592736B2 (en) | 1984-01-20 |
Family
ID=14653323
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53115066A Expired JPS592736B2 (en) | 1978-09-21 | 1978-09-21 | Cr↓-Mo steel for pressure vessels |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS592736B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5693858A (en) * | 1979-12-27 | 1981-07-29 | Sumitomo Metal Ind Ltd | High temp. steel with excellent creep embrittlement resistance |
JPS5831874A (en) * | 1981-08-18 | 1983-02-24 | Minamisenjiyu Seisakusho:Kk | Side type tape winding device |
JPS58207360A (en) * | 1982-05-27 | 1983-12-02 | Sumitomo Metal Ind Ltd | Stainless clad cr-mo steel plate |
DE3416521A1 (en) * | 1983-05-06 | 1984-11-08 | Hitachi, Ltd., Tokio/Tokyo | HEAT-RESISTANT STEEL |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5169422A (en) * | 1974-12-12 | 1976-06-16 | Nippon Steel Corp | Cr mo keiteigokinko |
-
1978
- 1978-09-21 JP JP53115066A patent/JPS592736B2/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5169422A (en) * | 1974-12-12 | 1976-06-16 | Nippon Steel Corp | Cr mo keiteigokinko |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5693858A (en) * | 1979-12-27 | 1981-07-29 | Sumitomo Metal Ind Ltd | High temp. steel with excellent creep embrittlement resistance |
JPS5761817B2 (en) * | 1979-12-27 | 1982-12-27 | Sumitomo Metal Ind | |
JPS5831874A (en) * | 1981-08-18 | 1983-02-24 | Minamisenjiyu Seisakusho:Kk | Side type tape winding device |
JPS58207360A (en) * | 1982-05-27 | 1983-12-02 | Sumitomo Metal Ind Ltd | Stainless clad cr-mo steel plate |
DE3416521A1 (en) * | 1983-05-06 | 1984-11-08 | Hitachi, Ltd., Tokio/Tokyo | HEAT-RESISTANT STEEL |
DE3416521C2 (en) * | 1983-05-06 | 1990-09-06 | Hitachi, Ltd., Tokio/Tokyo, Jp |
Also Published As
Publication number | Publication date |
---|---|
JPS592736B2 (en) | 1984-01-20 |
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