JPS5620121A - Manufacture of chromium-molybdenum steel for pressure vessel - Google Patents
Manufacture of chromium-molybdenum steel for pressure vesselInfo
- Publication number
- JPS5620121A JPS5620121A JP9542179A JP9542179A JPS5620121A JP S5620121 A JPS5620121 A JP S5620121A JP 9542179 A JP9542179 A JP 9542179A JP 9542179 A JP9542179 A JP 9542179A JP S5620121 A JPS5620121 A JP S5620121A
- Authority
- JP
- Japan
- Prior art keywords
- temp
- steel
- pressure vessel
- manufacture
- chromium
- 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 manufacture Cr-Mo steel for pressure vessel having excellent balance between high temp. strength and the resistance to temper brittleness without addition of expensive special elements, by reducing Si, Mn, P contents of Cr-Mo low alloy steel, and by hardening at higher temp. than that for conventional method.
CONSTITUTION: The Cr-Mo low alloy steel consists of 0.05W0.20% C, <0.50% Si, <0.60% Mn, <0.015% P, <0.015% S, 1.00W1.50% Cr, 0.40W1.50% Mo, ≤0.010% each of Sn, Sb, As, and the components are adjusted to satisfy the following relation: Si%+Mn%+40×P%≤0.90%. The steel is hardened at 1,000W 1,300°C temp which is higher than the conventional hardening temp., about 930°C, and is tempered, or after heated to 1,000W1,300°C temp., the steel is hot worked so as to restrain the formation of rough austenitic particles, then it is hardened and tempered. Hereby Cr-Mo steel for pressure vessel having high strength at high temp. and excellent resistance to temper brittleness is manufactured.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9542179A JPS6013409B2 (en) | 1979-07-25 | 1979-07-25 | Manufacturing method of chromium-molybdenum steel for pressure vessels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9542179A JPS6013409B2 (en) | 1979-07-25 | 1979-07-25 | Manufacturing method of chromium-molybdenum steel for pressure vessels |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5620121A true JPS5620121A (en) | 1981-02-25 |
| JPS6013409B2 JPS6013409B2 (en) | 1985-04-06 |
Family
ID=14137220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9542179A Expired JPS6013409B2 (en) | 1979-07-25 | 1979-07-25 | Manufacturing method of chromium-molybdenum steel for pressure vessels |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6013409B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01316419A (en) * | 1988-06-14 | 1989-12-21 | Nippon Steel Corp | Production of pressure-vessel steel with no need for heat treatment after welding |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6265513U (en) * | 1985-10-14 | 1987-04-23 |
-
1979
- 1979-07-25 JP JP9542179A patent/JPS6013409B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01316419A (en) * | 1988-06-14 | 1989-12-21 | Nippon Steel Corp | Production of pressure-vessel steel with no need for heat treatment after welding |
| JPH0635618B2 (en) * | 1988-06-14 | 1994-05-11 | 新日本製鐵株式会社 | Method for manufacturing pressure vessel steel that does not require heat treatment after welding |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6013409B2 (en) | 1985-04-06 |
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