JPS56158847A - Heat resistant chromium steel - Google Patents
Heat resistant chromium steelInfo
- Publication number
- JPS56158847A JPS56158847A JP6058480A JP6058480A JPS56158847A JP S56158847 A JPS56158847 A JP S56158847A JP 6058480 A JP6058480 A JP 6058480A JP 6058480 A JP6058480 A JP 6058480A JP S56158847 A JPS56158847 A JP S56158847A
- Authority
- JP
- Japan
- Prior art keywords
- steel
- heat resistant
- strength
- toughness
- temp
- 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
- 229910001220 stainless steel Inorganic materials 0.000 title abstract 2
- 229910052802 copper Inorganic materials 0.000 abstract 4
- 229910052721 tungsten Inorganic materials 0.000 abstract 4
- 229910000831 Steel Inorganic materials 0.000 abstract 3
- 229910052759 nickel Inorganic materials 0.000 abstract 3
- 229910052757 nitrogen Inorganic materials 0.000 abstract 3
- 239000010959 steel Substances 0.000 abstract 3
- 229910052804 chromium Inorganic materials 0.000 abstract 1
- 239000011651 chromium Substances 0.000 abstract 1
- 229910052748 manganese Inorganic materials 0.000 abstract 1
- 229910000734 martensite Inorganic materials 0.000 abstract 1
- 229910052750 molybdenum Inorganic materials 0.000 abstract 1
- 229910052758 niobium Inorganic materials 0.000 abstract 1
- 229910052720 vanadium Inorganic materials 0.000 abstract 1
- 229910000859 α-Fe Inorganic materials 0.000 abstract 1
Landscapes
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
PURPOSE: To obtain a heat resistant chromium steel having a totally tempered martensite structure with high strength at high temp. and high toughness at room temp. by further adding N to 11Cr1MoCuWNiVNb steel obtd. by adding Cu, W and Ni to 11Cr1MoVNb steel.
CONSTITUTION: This heat resistant steel for the shaft of a large-sized steam turbine rotor consists of, by wt., 0.1W2.5% C, 9.5W12.5% Cr, 0.5W2% Mo, 0.3W1.5% Ni, 0.4W1.5% Cu, 0.1W0.3% V, 0.05W0.5% W, 0.03W0.2% Nb, ≤0.7% Si, ≤1.5% Mn, 0.03W0.1% N and the balance Fe, and it is heat-treated without forming δ-ferrite. Even if one of Cu, W, Ni and N is removed, they can not produce a sufficient effect, and by the action of Cu, a toughness reduction due to N is prevented. W, Cu and N increase the toughness, yet above the upper limit of Ni lowers the strength at high temp. N is required to increase the strength at high temp., yet above the upper limit of N deteriorates the quality of the ingot.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6058480A JPS56158847A (en) | 1980-05-09 | 1980-05-09 | Heat resistant chromium steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6058480A JPS56158847A (en) | 1980-05-09 | 1980-05-09 | Heat resistant chromium steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56158847A true JPS56158847A (en) | 1981-12-07 |
| JPS6212304B2 JPS6212304B2 (en) | 1987-03-18 |
Family
ID=13146429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6058480A Granted JPS56158847A (en) | 1980-05-09 | 1980-05-09 | Heat resistant chromium steel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56158847A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0411726A (en) * | 1990-04-28 | 1992-01-16 | Mitsubishi Electric Corp | High-frequency discharge utilizing device and manufacture of semiconductor by using same device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63275326A (en) * | 1987-05-08 | 1988-11-14 | Hamamatsu Photonics Kk | Diagnostic apparatus |
| JP3747585B2 (en) * | 1997-08-25 | 2006-02-22 | 大同特殊鋼株式会社 | High hardness martensitic stainless steel with excellent workability and corrosion resistance |
-
1980
- 1980-05-09 JP JP6058480A patent/JPS56158847A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0411726A (en) * | 1990-04-28 | 1992-01-16 | Mitsubishi Electric Corp | High-frequency discharge utilizing device and manufacture of semiconductor by using same device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6212304B2 (en) | 1987-03-18 |
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