US3607239A - Austenitic heat resisting steel - Google Patents

Austenitic heat resisting steel Download PDF

Info

Publication number
US3607239A
US3607239A US773788A US3607239DA US3607239A US 3607239 A US3607239 A US 3607239A US 773788 A US773788 A US 773788A US 3607239D A US3607239D A US 3607239DA US 3607239 A US3607239 A US 3607239A
Authority
US
United States
Prior art keywords
steel
sus
steels
weight
strength
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
US773788A
Other languages
English (en)
Inventor
Tohru Mimino
Kazuhisa Kinoshita
Takayuki Shinoda
Isao Minegishi
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.)
JFE Engineering Corp
Original Assignee
Nippon Kokan Ltd
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 Nippon Kokan Ltd filed Critical Nippon Kokan Ltd
Application granted granted Critical
Publication of US3607239A publication Critical patent/US3607239A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel 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
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel 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
    • C22C38/40—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

Definitions

  • This invention relates to Ci-Ni type austenitic stainless steels of improved heat resistibility for elevated temperature service.
  • SUS-27, SUS'29, SUS-32 and the like (AlSl-304, 321 and 316 steels are similar standards) 18 Cr-8 Ni austenitic stainless steels are generally employed for elevated temperature and high-pressure services.
  • SUS-32 steel (AISI-316 steel) among the above-mentioned steels is commonly employed in consideration of having superior strengthat high temperature in spite of a high cost which is due to M of 2% to I 3% content.
  • the cost of SUS-27 steel (AISI-304) is relatively low, while its high-temperature strength is inferior to other stainless steel.
  • SUS-29 steel (AISI-32l steel) with the addition of Ti to said SUS-27 steel composition has higher heat resistibility than said SUS-27 steel. It is, however, found that the strength of said SUS-29 steel fails remarkably in a long period of service such as 650 C. 100,000 hours. Consequently, the strength is of the same degree as that of said SUS-27 steel.
  • the present invention has been developed in order to meet the above requirement.
  • the heat-resisting resisting steel of this invention is characterized by the addition of 0.001% to 0.30% by weight Ti, 0.001% to 0.30% by weight Nb+Ta, and 0.05% to 2.5% by weight V to compositions of the above Standards steels.
  • the FIGURE is a graph showing the relation of the creep rupture strength in the case where steels subjected to elevated temperature service are JlS SUS-27 (AISI-304) and SUS-32 (AISI-3 l6) steels, this invention steels No. 1, No. 2, No. 3 and No. 4 and No. 5 steel not containing V.
  • the steels of this invention have the following composition, that is, the steels consist of (by weight percent) 0.03% to 0.30% C, up to 1.00% Si, up to 2.00% Mn, 15.0% to 26.0% Cr, 7.0% to 22.0% Ni, 0.001% to 0.30% Ti, 0.001% to 0.30% Nb+Ta, 0.05% to 2.5% balance being Fe and unavoidable impurities.
  • C content of the present invention steel is higher in value in order to cause Ti-carbide andNb-carbide to produce and then cause Cr-carbide and V-carbide to precipitate and disperse around said Ti and Nb-carbide. Consequently it causes the strength under elevated temperature service to improve.
  • the content of Ti should be defined to be within the above range. More than 0.30% Ti causes its carbide to coarsen and causes its strength to lower at high temperatures, while less than 0.001% 'li brings about a lowering of precipitation amount of Ti-c'arbide and is ineffective for improving its strength.
  • Nb+Ta too, is similar to that of Ti. That is, both more than 0.30% Ti and less than 0.001% Ti are impossible to cause high-temperature strength to improve.
  • composition of No. 5 steel is within the range as defined as this invention steel, exception being for V.

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)
US773788A 1967-11-10 1968-11-06 Austenitic heat resisting steel Expired - Lifetime US3607239A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7195367 1967-11-10

Publications (1)

Publication Number Publication Date
US3607239A true US3607239A (en) 1971-09-21

Family

ID=13475342

Family Applications (1)

Application Number Title Priority Date Filing Date
US773788A Expired - Lifetime US3607239A (en) 1967-11-10 1968-11-06 Austenitic heat resisting steel

Country Status (5)

Country Link
US (1) US3607239A (enrdf_load_stackoverflow)
DE (1) DE1807868A1 (enrdf_load_stackoverflow)
FR (1) FR1591405A (enrdf_load_stackoverflow)
GB (1) GB1190515A (enrdf_load_stackoverflow)
SE (1) SE344213B (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3940267A (en) * 1973-08-13 1976-02-24 Nippon Kokan Kabushiki Kaisha Austenitic heat resisting steel
US3957545A (en) * 1970-07-28 1976-05-18 Nippon Kokan Kabushiki Kaisha Austenitic heat resisting steel containing chromium and nickel
US4201574A (en) * 1977-03-02 1980-05-06 Sumitomo Metal Industries, Ltd. Low carbon Ni-Cr austenitic steel having an improved resistance to stress corrosion cracking
US4822556A (en) * 1987-02-26 1989-04-18 Baltimore Specialty Steels Corporation Austenitic stainless steel combining strength and resistance to intergranular corrosion
US6602353B1 (en) * 1999-11-10 2003-08-05 Cemm Co., Ltd. Method for nitriding-processing iron group series alloy substrate

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3969161A (en) * 1973-11-07 1976-07-13 Nippon Kokan Kabushiki Kaisha Cr-Ni system austenitic heat-resisting steel
RU2359064C2 (ru) * 2007-07-02 2009-06-20 Федеральное Государственное Унитарное Предприятие "Центральный Научно-Исследовательский Институт Конструкционных Материалов "Прометей" (Фгуп "Цнии Км "Прометей") Аустенитная коррозионно-стойкая сталь

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2190486A (en) * 1930-07-21 1940-02-13 Krupp Nirosta Co Inc Austenitic chromium nickel steel alloy
US2793113A (en) * 1952-08-22 1957-05-21 Hadfields Ltd Creep resistant steel

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2190486A (en) * 1930-07-21 1940-02-13 Krupp Nirosta Co Inc Austenitic chromium nickel steel alloy
US2793113A (en) * 1952-08-22 1957-05-21 Hadfields Ltd Creep resistant steel

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3957545A (en) * 1970-07-28 1976-05-18 Nippon Kokan Kabushiki Kaisha Austenitic heat resisting steel containing chromium and nickel
US3940267A (en) * 1973-08-13 1976-02-24 Nippon Kokan Kabushiki Kaisha Austenitic heat resisting steel
US4201574A (en) * 1977-03-02 1980-05-06 Sumitomo Metal Industries, Ltd. Low carbon Ni-Cr austenitic steel having an improved resistance to stress corrosion cracking
US4822556A (en) * 1987-02-26 1989-04-18 Baltimore Specialty Steels Corporation Austenitic stainless steel combining strength and resistance to intergranular corrosion
US6602353B1 (en) * 1999-11-10 2003-08-05 Cemm Co., Ltd. Method for nitriding-processing iron group series alloy substrate

Also Published As

Publication number Publication date
GB1190515A (en) 1970-05-06
DE1807868A1 (de) 1969-08-07
FR1591405A (enrdf_load_stackoverflow) 1970-04-27
SE344213B (enrdf_load_stackoverflow) 1972-04-04

Similar Documents

Publication Publication Date Title
EP0016225B2 (en) Use of an austenitic steel in oxidizing conditions at high temperature
US2624671A (en) Ferritic chromium steels
US3607239A (en) Austenitic heat resisting steel
US3847600A (en) High temperature alloy steel
US3865644A (en) High strength, corrosion resistant, austenite-ferrite stainless steel
US4224062A (en) High temperature creep resistant structural steel
US3767390A (en) Martensitic stainless steel for high temperature applications
US3573897A (en) Iron-nickel alloys having a high nickel content
US3751244A (en) Austenitic heat resisting steel
US4381940A (en) Low alloy heat-resisting steel for high temperature use
US4405369A (en) Ferritic heat-resisting steel with an excellent toughness
US2909425A (en) Austenitic cr-mn-c-n steels for elevated temperature service
US3843332A (en) Composite article with a fastener of an austenitic alloy
US3716353A (en) Austenitic heat resisting steel
US3826649A (en) Nickel-chromium-iron alloy
US3201232A (en) Use of steel involving prolonged stressing at elevated temperatures
US2132877A (en) Manufacture of articles from steel alloys
US3969161A (en) Cr-Ni system austenitic heat-resisting steel
JPS6376854A (ja) 高温強度に優れたフエライト系耐熱鋼
US3260594A (en) High temperature alloys
JPH03236448A (ja) Ｃｒ―Ｎｉ系耐熱鋼
US3017266A (en) Austenitic steel and articles made therefrom
Needham et al. The effect of residuals on the elevated temperature properties of some creep resistant steels
US3957545A (en) Austenitic heat resisting steel containing chromium and nickel
JPH0570694B2 (enrdf_load_stackoverflow)