GB1015043A - Improvements in steel alloys - Google Patents

Improvements in steel alloys

Info

Publication number
GB1015043A
GB1015043A GB18358/63A GB1835863A GB1015043A GB 1015043 A GB1015043 A GB 1015043A GB 18358/63 A GB18358/63 A GB 18358/63A GB 1835863 A GB1835863 A GB 1835863A GB 1015043 A GB1015043 A GB 1015043A
Authority
GB
United Kingdom
Prior art keywords
hours
trace
tempered
alloy
steel alloys
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
Application number
GB18358/63A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
Original Assignee
General Electric Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by General Electric Co filed Critical General Electric Co
Publication of GB1015043A publication Critical patent/GB1015043A/en
Expired legal-status Critical Current

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
    • C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
    • 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
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • 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
    • C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
    • 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
    • C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum

Abstract

A steel alloy for a turbine rotor consists of by weight: .C.0.1 - 0.3%, .Mn.0.4 - 1.2%, .Si.trace - 0.6%, .Ni.trace - 1.2%, .Cr.8.0 - 13.0%, .Mo.0.5 - 1.5%, .V.0.15 - 0.3%, .Nb.0.03 - 0.12%, .N.0.04 - 0.1%, and as maximum residuals: 0.025% P, 0.025% S, 0.25% Co, 0.05% Al, 0.05% Ti, 0.04% Sn, 0.25% W, with the remainder Fe, the chromium equivalent (algebraic sum of the equivalents of the austenite and ferrite promoters) being less than 10. A forging of the alloy may be austenitized by heating it uniformly from 1038 DEG C. to 1094 DEG C., then quenched e.g. in oil or water to 93 - 260 DEG C. to transform to martensite, reheated to the former range for equalizing, then tempered e.g. at 538-600 DEG C. for 12 - 48 hours, cooled below 93 DEG C. for at least 12 hours and further tempered at at least 593 DEG C. for at least 12 hours. Similar alloys are disclosed for comparison but containing 0.32% and 0.57% Nb.
GB18358/63A 1962-05-31 1963-05-09 Improvements in steel alloys Expired GB1015043A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US198714A US3139337A (en) 1962-05-31 1962-05-31 Alloys

Publications (1)

Publication Number Publication Date
GB1015043A true GB1015043A (en) 1965-12-31

Family

ID=22734491

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18358/63A Expired GB1015043A (en) 1962-05-31 1963-05-09 Improvements in steel alloys

Country Status (3)

Country Link
US (1) US3139337A (en)
CH (1) CH443700A (en)
GB (1) GB1015043A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0188995A1 (en) * 1984-10-17 1986-07-30 Mitsubishi Jukogyo Kabushiki Kaisha High chromium cast steel for high-temperature pressure container and method for the thermal treatment thereof

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3303023A (en) * 1963-08-26 1967-02-07 Crucible Steel Co America Use of cold-formable austenitic stainless steel for valves for internal-combustion engines
US3389991A (en) * 1964-12-23 1968-06-25 Armco Steel Corp Stainless steel and method
US3767390A (en) * 1972-02-01 1973-10-23 Allegheny Ludlum Ind Inc Martensitic stainless steel for high temperature applications
US3859147A (en) * 1972-03-10 1975-01-07 Carpenter Technology Corp Hot hard stainless steel
JPS6054385B2 (en) * 1980-02-20 1985-11-29 株式会社東芝 heat resistant steel
JPS5877743A (en) * 1981-11-02 1983-05-11 Hitachi Ltd Ingot making method for alloy steel containing niobium
JPS58110661A (en) * 1981-12-25 1983-07-01 Hitachi Ltd Heat resistant steel
JPS616256A (en) * 1984-06-21 1986-01-11 Toshiba Corp 12% cr heat resisting steel
JPS616257A (en) * 1984-06-21 1986-01-11 Toshiba Corp 12% cr heat resisting steel
US4762577A (en) * 1987-01-30 1988-08-09 Westinghouse Electric Corp. 9 Chromium- 1 molybdenum steel alloy having superior high temperature properties and weldability, a method for preparing same and articles fabricated therefrom
JPH0639885B2 (en) * 1988-03-14 1994-05-25 株式会社日立製作所 Gas turbine shroud and gas turbine
US5275775A (en) * 1991-10-21 1994-01-04 Riecken George C Method for making an insole
JP3422658B2 (en) * 1997-06-25 2003-06-30 三菱重工業株式会社 Heat resistant steel
DE19808276C2 (en) * 1998-02-27 2003-12-24 Stahlwerk Ergste Westig Gmbh Steel alloy for sliding elements
EP1536026A1 (en) * 2003-11-27 2005-06-01 Siemens Aktiengesellschaft High temperature resistant article

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2648602A (en) * 1952-01-17 1953-08-11 Crucible Steel Company High strength steel for hightemperature service
US3069257A (en) * 1960-06-02 1962-12-18 Armco Steel Corp Alloy steel and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0188995A1 (en) * 1984-10-17 1986-07-30 Mitsubishi Jukogyo Kabushiki Kaisha High chromium cast steel for high-temperature pressure container and method for the thermal treatment thereof

Also Published As

Publication number Publication date
US3139337A (en) 1964-06-30
CH443700A (en) 1967-09-15

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