JPS56130458A - Heat-resistant ferritic steel with improved toughness - Google Patents
Heat-resistant ferritic steel with improved toughnessInfo
- Publication number
- JPS56130458A JPS56130458A JP3491980A JP3491980A JPS56130458A JP S56130458 A JPS56130458 A JP S56130458A JP 3491980 A JP3491980 A JP 3491980A JP 3491980 A JP3491980 A JP 3491980A JP S56130458 A JPS56130458 A JP S56130458A
- Authority
- JP
- Japan
- Prior art keywords
- steel
- ferritic steel
- heat
- resistant ferritic
- content
- 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
Landscapes
- Heat Treatment Of Steel (AREA)
Abstract
PURPOSE: To obtain the titled steel with improved creep characteristics at high temp., etc. by controlling the C content of steel to a fairly low level, compensating insufficient strength due to the reduced C content with the proper precipitation of carbide, and inhibiting embrittlement in use by adding Zr according to the component balance of Cr Mo, etc.
CONSTITUTION: This heat resistant ferritic steel consists of 0.03W0.10% C, 0.1W 1.0% Si, ≤1.5% Mn, >1.5W2.7% Mo, 7.0W10.0% Cr, 0.01W0.1% Nb, 0.02W 0.12% V, 0.01W0.10% Zr and the balance practically Fe. In this composition the atomic ratio of (Nb+V+Zr)/C is essentially adjusted to 0.35W0.80, and the relation between (Cr/30+Mo/10-C)% and Zr% is also regulated to the range bounded by A, B, C, D and E in the figure. As a result, this ferritic steel has improved creep characteristics at high temp., weldability and workability as well as relieved embrittlement after long-time use.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3491980A JPS5846543B2 (en) | 1980-03-19 | 1980-03-19 | Ferritic heat-resistant steel with improved toughness |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3491980A JPS5846543B2 (en) | 1980-03-19 | 1980-03-19 | Ferritic heat-resistant steel with improved toughness |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56130458A true JPS56130458A (en) | 1981-10-13 |
JPS5846543B2 JPS5846543B2 (en) | 1983-10-17 |
Family
ID=12427617
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3491980A Expired JPS5846543B2 (en) | 1980-03-19 | 1980-03-19 | Ferritic heat-resistant steel with improved toughness |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5846543B2 (en) |
-
1980
- 1980-03-19 JP JP3491980A patent/JPS5846543B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5846543B2 (en) | 1983-10-17 |
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