GB786993A - Improvements in or relating to low-alloy steels - Google Patents

Improvements in or relating to low-alloy steels

Info

Publication number
GB786993A
GB786993A GB33256/55A GB3325655A GB786993A GB 786993 A GB786993 A GB 786993A GB 33256/55 A GB33256/55 A GB 33256/55A GB 3325655 A GB3325655 A GB 3325655A GB 786993 A GB786993 A GB 786993A
Authority
GB
United Kingdom
Prior art keywords
per cent
cooling
hour
air
relating
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
GB33256/55A
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.)
Vodafone GmbH
Original Assignee
Mannesmann AG
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 Mannesmann AG filed Critical Mannesmann AG
Publication of GB786993A publication Critical patent/GB786993A/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
    • C22C38/24—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
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • 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

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

Steel alloys of improved castability have compositions within the following range in per cent by weight .C.0.12-0.25 per cent .Si.0.25-0.5 per cent .Mn.0.5-1.8 per cent .V.0.05-0.2 per cent .N.0.015-0.028 per cent .Al.0.03-0.07 per cent .Fe.the remainder The alloy may also contain up to 0.5 per cent each of Ni, Mo and Cr. Al and N are maintained in solution by accelerated cooling of the casting to 1000 DEG C., e.g. in a continuous casting process or by rapid rolling of the casting down to thin dimensions. Alternatively intermediate or final products may be solution heat treated and then cooled rapidly to 1000 DEG C. The steel is then subjected to one or more normalizing treatments between A3 and 950 DEG C. In an example the latter treatment comprises normalizing at 930 DEG C. for 1 hour, cooling in air, reheating to 930 DEG C. for 1/2 hour, cooling in air, annealing at 680 DEG C. for 1 hour and cooling in air.
GB33256/55A 1954-11-22 1955-11-21 Improvements in or relating to low-alloy steels Expired GB786993A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE786993X 1954-11-22

Publications (1)

Publication Number Publication Date
GB786993A true GB786993A (en) 1957-11-27

Family

ID=6699149

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33256/55A Expired GB786993A (en) 1954-11-22 1955-11-21 Improvements in or relating to low-alloy steels

Country Status (1)

Country Link
GB (1) GB786993A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2919187A (en) * 1958-06-10 1959-12-29 Robert H Frazier Low-transition-temperature steel alloy
US3155549A (en) * 1961-03-11 1964-11-03 Ishikawajima Harima Heavy Ind Steel for high temperature cementation
US3163565A (en) * 1961-06-22 1964-12-29 Yawata Iron & Steel Co Process for producing a tough steel for low temperatures
US3328211A (en) * 1963-12-05 1967-06-27 Ishikawajima Harima Heavy Ind Method of manufacturing weldable, tough and high strength steel for structure members usable in the ashot-state and steel so made

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2919187A (en) * 1958-06-10 1959-12-29 Robert H Frazier Low-transition-temperature steel alloy
US3155549A (en) * 1961-03-11 1964-11-03 Ishikawajima Harima Heavy Ind Steel for high temperature cementation
US3163565A (en) * 1961-06-22 1964-12-29 Yawata Iron & Steel Co Process for producing a tough steel for low temperatures
US3328211A (en) * 1963-12-05 1967-06-27 Ishikawajima Harima Heavy Ind Method of manufacturing weldable, tough and high strength steel for structure members usable in the ashot-state and steel so made

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