GB1092538A - Low-temperature tough steel - Google Patents

Low-temperature tough steel

Info

Publication number
GB1092538A
GB1092538A GB46582/64A GB4658264A GB1092538A GB 1092538 A GB1092538 A GB 1092538A GB 46582/64 A GB46582/64 A GB 46582/64A GB 4658264 A GB4658264 A GB 4658264A GB 1092538 A GB1092538 A GB 1092538A
Authority
GB
United Kingdom
Prior art keywords
steel
austenitized
quenched
nitride
treated
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
GB46582/64A
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.)
Yawata Iron and Steel Co Ltd
Original Assignee
Yawata Iron and Steel Co 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 Yawata Iron and Steel Co Ltd filed Critical Yawata Iron and Steel Co Ltd
Publication of GB1092538A publication Critical patent/GB1092538A/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
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
    • 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
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese

Abstract

A steel having good low temperature toughness contains in percentage by weight .C.0.01-0.15 .Si.0.05-0.4 .Ni.4.5 -7.5 .Mn.0.5 -3.5 .N.0.001-0.05 .Al.(acid soluble) not more than 0.05 .Mo.0.05-0.5 optionally present .Fe.balance and has a structure of fine dispersed austenite in a ferrite matrix. The aluminium present as nitride may be replaced by an equivalent amount of one or more of Zr, Ti, Be, Nb, V, Hf, Ta or B. The steel may be austenitized at 700 DEG -900 DEG C., followed by quenching and tempering at 525 DEG -650 DEG C., but when more than 0.005% of aluminium nitride is formed the first step may be carried out at a higher temperature sufficient to dissolve the nitride without producing excessive grain growth. Alternatively the steel may be treated at an even higher temperature e.g. 1350 DEG C., quenched, and then austenitized; in yet a further variation the steel may be treated at 1350 DEG C., quenched, normalized from 700 DEG C., and then austenitized, quenched and tempered. The fine dispersed austenite produced in the tempering step may be partially converted to martensite upon the subsequent quenching.
GB46582/64A 1963-11-18 1964-11-16 Low-temperature tough steel Expired GB1092538A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6198863 1963-11-18

Publications (1)

Publication Number Publication Date
GB1092538A true GB1092538A (en) 1967-11-29

Family

ID=13187059

Family Applications (1)

Application Number Title Priority Date Filing Date
GB46582/64A Expired GB1092538A (en) 1963-11-18 1964-11-16 Low-temperature tough steel

Country Status (2)

Country Link
US (1) US3444011A (en)
GB (1) GB1092538A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3645721A (en) * 1968-01-25 1972-02-29 Republic Steel Corp Heat-treatable, high-strength, high-toughness, low-carbon, ni-mo alloy steel
US3619302A (en) * 1968-11-18 1971-11-09 Yawata Iron & Steel Co Method of heat-treating low temperature tough steel
USRE28645E (en) * 1968-11-18 1975-12-09 Method of heat-treating low temperature tough steel
GB1280268A (en) * 1969-06-21 1972-07-05 Nippon Kokan Kk Steel for low-temperature services
US4353755A (en) * 1980-10-29 1982-10-12 General Electric Company Method of making high strength duplex stainless steels
FR2673197B1 (en) * 1991-01-31 1994-02-04 Creusot Loire Industrie METHOD FOR MANUFACTURING BLOCKS OR MASSIVE STEEL PARTS AND PARTS OBTAINED.
KR100984413B1 (en) * 2005-09-21 2010-09-29 수미도모 메탈 인더스트리즈, 리미티드 Steel product usable at low temperature and method for production thereof
JP6018453B2 (en) * 2012-03-09 2016-11-02 株式会社神戸製鋼所 High strength thick steel plate with excellent cryogenic toughness
JP6018454B2 (en) * 2012-04-13 2016-11-02 株式会社神戸製鋼所 High strength thick steel plate with excellent cryogenic toughness

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2206370A (en) * 1938-08-13 1940-07-02 Merco Nordstrom Valve Co Low temperature alloy and valve or the like
US2516125A (en) * 1949-04-11 1950-07-25 Irvin R Kramer Alloy steel
US2992148A (en) * 1959-04-23 1961-07-11 Int Nickel Co Alloy steels
GB988705A (en) * 1961-03-11 1965-04-07 Ishikawajima Harima Heavy Ind Steel for high temperature cementation
BE614714A (en) * 1961-05-16 1962-07-02 Ishikawajima Harima Heavy Ind Low nickel ductile steel

Also Published As

Publication number Publication date
US3444011A (en) 1969-05-13

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