GB737002A - Improvements in or relating to high expansion austenitic steels - Google Patents
Improvements in or relating to high expansion austenitic steelsInfo
- Publication number
- GB737002A GB737002A GB2699752A GB2699752A GB737002A GB 737002 A GB737002 A GB 737002A GB 2699752 A GB2699752 A GB 2699752A GB 2699752 A GB2699752 A GB 2699752A GB 737002 A GB737002 A GB 737002A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- article
- hot
- nitrogen
- high expansion
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
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 high expansion austenitic steel contains 0.3-0.7 per cent C, 5-20 per cent Ni, 3-10 per cent Mn, 9-12.5 per cent Cr and one or more carbide-forming elements V, W, Mo, Ti, Nb and Ta in a total proportion by weight of 0.4-1 per cent, the remainder being Fe. When the above elements are within the following narrower ranges 0-3.0 per cent Cu may also be present; C 0.4-0.6, Si up to 1.2, Mn 4-7, Ni 11-14 and carbide formers 0.5-1, all expressed as per cent by weight. An article made of this steel may be heated at 600-775 DEG C. for 1-20 hours. When the article is made, at least in part, by a hot-working process the above heat-treatment may be preceded by rapidly cooling the article from between 1000-1250 DEG C., when hot-working is completed in this temperature range, to between 550-600 DEG C. and then quenching to room temperature in a liquid such as oil or a blast of gas. Alternatively the hot-worked article may be reheated to between 1000-1250 DEG C. for the application of the heat treatment. Heat treatment may be followed by machining and nitrogen-hardening. A part of the nitrogen-hardened skin may be removed by further machining and this is followed by further nitrogen-hardening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2699752A GB737002A (en) | 1952-10-27 | 1952-10-27 | Improvements in or relating to high expansion austenitic steels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2699752A GB737002A (en) | 1952-10-27 | 1952-10-27 | Improvements in or relating to high expansion austenitic steels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB737002A true GB737002A (en) | 1955-09-21 |
Family
ID=10252518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2699752A Expired GB737002A (en) | 1952-10-27 | 1952-10-27 | Improvements in or relating to high expansion austenitic steels |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB737002A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4585707A (en) * | 1983-04-29 | 1986-04-29 | Carpenter Technology Corporation | High expansion alloy for bimetal strip |
| CN112301283A (en) * | 2020-10-30 | 2021-02-02 | 上海材料研究所 | Precipitation hardening austenitic alloy steel with high expansibility and thermal stability and method for manufacturing same |
| US10927439B2 (en) | 2018-05-30 | 2021-02-23 | Garrett Transportation I Inc | Stainless steel alloys, turbocharger components formed from the stainless steel alloys, and methods for manufacturing the same |
-
1952
- 1952-10-27 GB GB2699752A patent/GB737002A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4585707A (en) * | 1983-04-29 | 1986-04-29 | Carpenter Technology Corporation | High expansion alloy for bimetal strip |
| US10927439B2 (en) | 2018-05-30 | 2021-02-23 | Garrett Transportation I Inc | Stainless steel alloys, turbocharger components formed from the stainless steel alloys, and methods for manufacturing the same |
| CN112301283A (en) * | 2020-10-30 | 2021-02-02 | 上海材料研究所 | Precipitation hardening austenitic alloy steel with high expansibility and thermal stability and method for manufacturing same |
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