GB689503A - Heat-resistant copper-nickel steels - Google Patents
Heat-resistant copper-nickel steelsInfo
- Publication number
- GB689503A GB689503A GB19192/50A GB1919250A GB689503A GB 689503 A GB689503 A GB 689503A GB 19192/50 A GB19192/50 A GB 19192/50A GB 1919250 A GB1919250 A GB 1919250A GB 689503 A GB689503 A GB 689503A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- heat
- stabilization
- per
- elastic limit
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
A heat-insensitive steel, having a relatively high elastic limit at a temperature of 350 DEG C and a favourable ratio of elastic limit to tensile strength at room temperature, has the following composition: C 0.1-0.3 per cent; Mn 0.6-1.0 per cent; Cu 0.6-1.2 per cent; Ni 0.5-1.2 per cent; Si 0.3-0.5 per cent; Mo 0-0.3 per cent; Cr 0-0.4 per cent; one or more of Ta, Nb, B and Zr traces to 0.06 per cent; Fe, together with conventionally low S and P contents, 0.01-0.1 per cent each, forming the balance. The alloy may be heat treated by normalization, e.g. at 880 DEG C, followed by slow cooling at a rate which may be 2 DEG to 7 DEG per minute to below 200 DEG C, e.g. to 150 DEG C and then by red-heat stabilization within the range 600-675 DEG C for a time sufficient to achieve the desired degree of stabilization. The steel is particularly suitable for pressure equipment which is subjected to mechanical strains at high temperature, such as boilers.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE689503X | 1948-10-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB689503A true GB689503A (en) | 1953-04-01 |
Family
ID=6598727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB19192/50A Expired GB689503A (en) | 1948-10-01 | 1950-08-01 | Heat-resistant copper-nickel steels |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB689503A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0347156A2 (en) * | 1988-06-13 | 1989-12-20 | Nippon Steel Corporation | Process for manufacturing building construction steel having excellent fire resistance and low yield ratio, and construction steel obtained thereby |
-
1950
- 1950-08-01 GB GB19192/50A patent/GB689503A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0347156A2 (en) * | 1988-06-13 | 1989-12-20 | Nippon Steel Corporation | Process for manufacturing building construction steel having excellent fire resistance and low yield ratio, and construction steel obtained thereby |
| US5147474A (en) * | 1988-06-13 | 1992-09-15 | Nippon Steel Corporation | Building construction steel having excellent fire resistance and low yield ratio |
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