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US2968549A - High strength alloy for use at elevated temperatures - Google Patents

High strength alloy for use at elevated temperatures Download PDF

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Publication number
US2968549A
US2968549A US819211A US81921159A US2968549A US 2968549 A US2968549 A US 2968549A US 819211 A US819211 A US 819211A US 81921159 A US81921159 A US 81921159A US 2968549 A US2968549 A US 2968549A
Authority
US
United States
Prior art keywords
steel
rupture
steels
titanium
creep
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 - Lifetime
Application number
US819211A
Other languages
English (en)
Inventor
Richard R Brady
Edward J Dulis
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.)
United States Steel Corp
Original Assignee
United States Steel Corp
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 United States Steel Corp filed Critical United States Steel Corp
Priority to US819211A priority Critical patent/US2968549A/en
Priority to BE591665A priority patent/BE591665A/fr
Priority to GB20583/60A priority patent/GB899470A/en
Application granted granted Critical
Publication of US2968549A publication Critical patent/US2968549A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
    • 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
    • C22C38/18—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

Definitions

  • This invention relates to alloy steel possessing high strength at high temperatures and more particularly to alloys having high creep-rupture strengths at 1100 F.
  • a steel possessing the foregoing properties can be produced by combining with iron and carbon, chromium, molybdenum, vanadium, columbium and either tungsten or titanium as essential ingredicuts.
  • the composition of our invention is balanced so that the steel will transform to martensite upon air cooling from austenitizing temperatures.
  • the molybdenum, vanadium, columbium and a metal of the group consisting of tungsten or titanium are further balanced so that tempering of the martensitic microstructure produces a steel having a 1000-hour creep-rupture strength in excess of 40,000 p.s.i. at 110 F.
  • the steel contains sufficient chromium to provide good resistance to elevated temperature oxidation together with fair resistance to atmospheric corrosion.
  • our steel should fall within the following chemical composition limits:
  • the molybdenum should be maintained at about 1.0% and when the steel contains more than about 0.35% titanium, the vanadium should be maintained below about .50%.
  • the steel should fall within either of the following composition ranges:
  • Norm-The steels were austenitized for hour at 2,100 F., air-cooled to room temperature;tempered for one hour at 1,200" F; and Water quenched to room temperature.
  • N o'rE.'Ihe steels were austenitized for 3 hour at 2,100 F., air-cooled to'room temperature; tempered forone hour at 1,200 F. and water quenchedto room temperature.
  • said element being present in an amount between 0.35 to 0.65 when said element is titanium and between 0.55 and 0.90 when said element is tungsten.
  • Titanium 0 NoTE.-Th'e steels were austenitlrerl or hour at 2100 F., air cooled to room temperature, tempered tor one hour at 1100 F., and water quenched-toroom temperature:
  • a steel alloy characterized by high creep-rupture properties at 1100 F. said steel containing Percent Carbon .18 to .22 Manganese .35 to .55 Silicon .35 to .55 Chromium 2.80 to 3.20 Nickel .50 max. Molybdenum .90 to 1.10 Vanadium .19 to .28 0 Columbium .45 to .55 Tungsten 0 Titanium .45 to .55

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)
US819211A 1959-06-10 1959-06-10 High strength alloy for use at elevated temperatures Expired - Lifetime US2968549A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US819211A US2968549A (en) 1959-06-10 1959-06-10 High strength alloy for use at elevated temperatures
BE591665A BE591665A (fr) 1959-06-10 1960-06-08 Alliage à haute résistance pouvant être utilisé à des températures élevées
GB20583/60A GB899470A (en) 1959-06-10 1960-06-10 High strength alloy for use at elevated temperatures

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US819211A US2968549A (en) 1959-06-10 1959-06-10 High strength alloy for use at elevated temperatures

Publications (1)

Publication Number Publication Date
US2968549A true US2968549A (en) 1961-01-17

Family

ID=25227496

Family Applications (1)

Application Number Title Priority Date Filing Date
US819211A Expired - Lifetime US2968549A (en) 1959-06-10 1959-06-10 High strength alloy for use at elevated temperatures

Country Status (3)

Country Link
US (1) US2968549A (fr)
BE (1) BE591665A (fr)
GB (1) GB899470A (fr)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3257200A (en) * 1962-12-10 1966-06-21 United States Steel Corp Alloy steel for elevated temperature service
US3377162A (en) * 1964-09-10 1968-04-09 Rand Mines Ltd Stainless steel
US3531279A (en) * 1964-12-05 1970-09-29 Thyssen Huette Ag Ferritic columbium containing,chromium - molybdenum steel,containing nickel
US3539338A (en) * 1966-06-28 1970-11-10 Nippon Kokan Kk High-temperature alloy steel containing cr and mo
US3607238A (en) * 1967-06-29 1971-09-21 English Steel Corp Ltd Heat-resistant to low chromium-nickel alloy steel for large forgings
US3767390A (en) * 1972-02-01 1973-10-23 Allegheny Ludlum Ind Inc Martensitic stainless steel for high temperature applications
US3954421A (en) * 1972-04-10 1976-05-04 Westinghouse Electric Corporation Alloys for high creep applications
US3954454A (en) * 1975-04-09 1976-05-04 Westinghouse Electric Corporation Temper embrittlement free low alloy steel
US4058650A (en) * 1975-07-11 1977-11-15 Hitachi Metals, Ltd. Back material of metal band saw high in fatigue strength
US4232096A (en) * 1976-12-17 1980-11-04 Uddeholms Aktiebolag Composite steel material and composite steel tool made from this material
US4261768A (en) * 1979-06-27 1981-04-14 Voest-Alpine Aktiengesellschaft Low alloyed steel having improved corrosion behavior, in particular relative to sea water
US4529454A (en) * 1981-02-27 1985-07-16 Hitachi Ltd Low C-Cr-Mo steel used under wet steam
EP0237170A2 (fr) * 1986-02-05 1987-09-16 Hitachi, Ltd. Acier résistant à la chaleur et composants de turbine à gaz à base de cet acier
US4762891A (en) * 1987-02-13 1988-08-09 Minnesota Mining And Manufacturing Company Scorch-resistant, curable fluorinated elastomer
US4778652A (en) * 1984-11-29 1988-10-18 Honda Giken Kogyo Kabushiki Kaisha High strength bolt
EP0298127A1 (fr) * 1987-01-09 1989-01-11 Hitachi, Ltd. Acier resistant a la chaleur et turbine a gaz composee de cet acier
US4853181A (en) * 1986-06-18 1989-08-01 Wert David E Hot work tool steel
US4886640A (en) * 1988-08-22 1989-12-12 Carpenter Technology Corporation Hot work tool steel with good temper resistance
US5084238A (en) * 1989-07-31 1992-01-28 Mitsubishi Jukogyo Kabushiki Kaisha High strength heat-resistant low alloy steels

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4782211A (en) * 1985-12-09 1988-11-01 Weld Mold Company Method of welding and product obtained therefrom

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3257200A (en) * 1962-12-10 1966-06-21 United States Steel Corp Alloy steel for elevated temperature service
US3377162A (en) * 1964-09-10 1968-04-09 Rand Mines Ltd Stainless steel
US3531279A (en) * 1964-12-05 1970-09-29 Thyssen Huette Ag Ferritic columbium containing,chromium - molybdenum steel,containing nickel
US3539338A (en) * 1966-06-28 1970-11-10 Nippon Kokan Kk High-temperature alloy steel containing cr and mo
US3607238A (en) * 1967-06-29 1971-09-21 English Steel Corp Ltd Heat-resistant to low chromium-nickel alloy steel for large forgings
US3767390A (en) * 1972-02-01 1973-10-23 Allegheny Ludlum Ind Inc Martensitic stainless steel for high temperature applications
US3954421A (en) * 1972-04-10 1976-05-04 Westinghouse Electric Corporation Alloys for high creep applications
US3954454A (en) * 1975-04-09 1976-05-04 Westinghouse Electric Corporation Temper embrittlement free low alloy steel
US4058650A (en) * 1975-07-11 1977-11-15 Hitachi Metals, Ltd. Back material of metal band saw high in fatigue strength
US4232096A (en) * 1976-12-17 1980-11-04 Uddeholms Aktiebolag Composite steel material and composite steel tool made from this material
US4261768A (en) * 1979-06-27 1981-04-14 Voest-Alpine Aktiengesellschaft Low alloyed steel having improved corrosion behavior, in particular relative to sea water
US4529454A (en) * 1981-02-27 1985-07-16 Hitachi Ltd Low C-Cr-Mo steel used under wet steam
USRE33006E (en) * 1981-02-27 1989-08-01 Hitachi, Ltd. Feed-water heater comprising low C-Cr-Mo steel components used under wet steam
US4778652A (en) * 1984-11-29 1988-10-18 Honda Giken Kogyo Kabushiki Kaisha High strength bolt
EP0237170A2 (fr) * 1986-02-05 1987-09-16 Hitachi, Ltd. Acier résistant à la chaleur et composants de turbine à gaz à base de cet acier
EP0237170A3 (en) * 1986-02-05 1989-12-06 Hitachi, Ltd. Heat resistant steel and gas turbine composed of the same
US4853181A (en) * 1986-06-18 1989-08-01 Wert David E Hot work tool steel
EP0298127A1 (fr) * 1987-01-09 1989-01-11 Hitachi, Ltd. Acier resistant a la chaleur et turbine a gaz composee de cet acier
EP0298127A4 (en) * 1987-01-09 1993-05-26 Hitachi, Ltd. Heat-resistant steel and gas turbine made of the same
US4762891A (en) * 1987-02-13 1988-08-09 Minnesota Mining And Manufacturing Company Scorch-resistant, curable fluorinated elastomer
US4886640A (en) * 1988-08-22 1989-12-12 Carpenter Technology Corporation Hot work tool steel with good temper resistance
US5084238A (en) * 1989-07-31 1992-01-28 Mitsubishi Jukogyo Kabushiki Kaisha High strength heat-resistant low alloy steels

Also Published As

Publication number Publication date
GB899470A (en) 1962-06-20
BE591665A (fr) 1960-10-03

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